Joni Tammi
    • Metsähovi Radio Observatory Metsähovintie 114

    20062022

    Research activity per year

    If you made any changes in Pure these will be visible here soon.

    Search results

    • 2022

      Auringonpimennys radioteleskoopilla

      Translated title of the contribution: Solar eclipse with a radio telescopeTammi, J., Kallunki, J., Aatrokoski, J. & McKay, D., 25 Oct 2022, 2 p. Aalto-yliopiston Metsähovin radio-observatorio.

      Research output: Other contributionGeneral public

    • Calibration of CALLISTO data

      Kallunki, J., Monstein, C., Kirves, P., Tammi, J. & Mujunen, A., 2022, Aalto-yliopisto. 17 p. (Aalto University publication series SCIENCE + TECHNOLOGY; vol. 2022, no. 1)

      Research output: Book/ReportCommissioned report

      Open Access
    • Investigating the Blazar TXS 0506+056 through Sharp Multiwavelength Eyes during 2017-2019

      Hovatta, T., Lähteenmäki, A., Tornikoski, M., Tammi, J., MAGIC Collaboration & OVRO, 1 Mar 2022, In: The Astrophysical Journal. 927, 2, 197.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      2 Citations (Scopus)
      15 Downloads (Pure)
    • Kinematics of Parsec-scale Jets of Gamma-Ray Blazars at 43 GHz during 10 yr of the VLBA-BU-BLAZAR Program

      Weaver, Z. R., Jorstad, S. G., Marscher, A. P., Morozova, D. A., Troitsky, I. S., Agudo, I., Gómez, J. L., Lähteenmäki, A., Tammi, J. & Tornikoski, M., 2022, In: Astrophysical Journal, Supplement Series. 260, 1, 42 p., 12.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      10 Citations (Scopus)
      2 Downloads (Pure)
    • Magnetic field strengths of the synchrotron self-absorption region in the jet of CTA 102 during radio flares

      Kim, S-H., Lee, S-S., Lee, J. W., Hodgson, J. A., Kang, S., Algaba, J-C., Kim, J-Y., Hodges, M., Agudo, I., Fuentes, A., Escudero, J., Myserlis, I., Traianou, E., Lahteenmaki, A., Tornikoski, M., Tammi, J., Ramakrishnan, V. & Jarvela, E., Feb 2022, In: Monthly Notices of the Royal Astronomical Society. 510, 1, p. 815-833 19 p.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      1 Citation (Scopus)
      39 Downloads (Pure)
    • Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 2020

      Acciari, V. A., Ansoldi, S., Antonelli, L. A., Engels, A. A., Artero, M., Asano, K., Baack, D., Babic, A., Baquero, A., Barres de Almeida, U., Barrio, J. A., Batkovic, Becerra Gonzalez, J., Bednarek, W., Bellizzi, L., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., & 190 othersBigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Bosnjak, Z., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Amico, G., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Delgado Mendez, C., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espineira, E., Prester, D. D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Ramazani, V. F., Fattorini, A., Ferrara, G., Fonseca, M., Font, L., Fruck, C., Fukami, S., Garcia Lopez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinovic, N., Green, J. G., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., Hutten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jimenez, I., Jormanainen, J., Jouvin, L., Kajiwara, Y., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., Lopez-Coto, R., Lopez-Moya, M., Lopez-Oramas, A., Loporchio, S., Machado de Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martinez, M., Mazin, D., Menchiari, S., Mender, S., Micanovic, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, D., Moretti, E., Neustroev, V., Nigro, C., Nilsson, K., Nishijima, K., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletic, L., Penil, P., Perennes, C., Persic, M., Moroni, P. G. P., Prandini, E., Priyadarshi, C., Puljak, I., Rhode, W., Ribo, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., Snidaric, Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Suric, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzic, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Wunderlich, C., Zaric, D., de Palma, F., D'Ammando, F., Barnacka, A., Sahu, D. K., Hodges, M., Hovatta, T., Kiehlmann, S., Max-Moerbeck, W., Readhead, A. C. S., Reeves, R., Pearson, T. J., Lahteenmaki, A., Bjorklund, Tornikoski, M., Tammi, J., Suutarinen, S., Hada, K. & Niinuma, K., 1 Feb 2022, In: Monthly Notices of the Royal Astronomical Society. 510, 2, p. 2344-2362 19 p.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      3 Citations (Scopus)
      18 Downloads (Pure)
    • Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510-089 on Multiple Timescales

      Lähteenmäki, A., Hovatta, T., Tornikoski, M., Tammi, J. & Fermi Large Area Telescope Collaboration, 1 Mar 2022, In: The Astrophysical Journal. 927, 2, 214.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      3 Citations (Scopus)
      16 Downloads (Pure)
    • 2021

      Association of IceCube neutrinos with radio sources observed at Owens Valley and Metsähovi Radio Observatories

      Hovatta, T., Lindfors, E., Kiehlmann, S., Max-Moerbeck, W., Hodges, M., Liodakis, I., Lähteemäki, A., Pearson, T. J., Readhead, A. C. S., Reeves, R. A., Suutarinen, S., Tammi, J. & Tornikoski, M., 10 Jun 2021, In: Astronomy and Astrophysics. 650, 17 p., A83.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      27 Citations (Scopus)
      79 Downloads (Pure)
    • VHE gamma-ray detection of FSRQ QSO B1420+326 and modeling of its enhanced broadband state in 2020

      Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Artero, M., Asano, K., Baack, D., Babić, A., Baquero, A., Barres De Almeida, U., Barrio, J. A., Becerra González, J., Bednarek, W., Bellizzi, L., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., & 214 othersBiland, A., Blanch, O., Bonnoli, G., Bošnjak, A., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Amico, G., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Delgado Mendez, C., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espiñeira, E., Dominis Prester, D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Fallah Ramazani, V., Fattorini, A., Ferrara, G., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Garciá López, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinović, N., Green, J. G., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., Hütten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jormanainen, J., Jouvin, L., Kajiwara, Y., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., López-Coto, R., López-Moya, M., López-Oramas, A., Loporchio, S., Machado De Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Mender, S., Micánović, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Neustroev, V., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletić, L., Peñil, P., Perennes, C., Persic, M., Prada Moroni, P. G., Prandini, E., Priyadarshi, C., Puljak, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Surić, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Tosti, L., Truzzi, S., Tutone, A., Van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Zarić, D., Angioni, R., D'Ammando, F., Ciprini, S., Cheung, C. C., Orienti, M., Pacciani, L., Prajapati, P., Kumar, P., Ganesh, S., Minev, M., Kurtenkov, A., Marchini, A., Carrasco, L., Escobedo, G., Porras, A., Recillas, E., Lähteenmäki, A., Tornikoski, M., Berton, M., Tammi, J., Vera, R. J. C., Jorstad, S. G., Marscher, A. P., Weaver, Z. R., Hart, M., Hallum, M. K., Larionov, V. M., Borman, G. A., Grishina, T. S., Kopatskaya, E. N., Larionova, E. G., Nikiforova, A. A., Morozova, D. A., Savchenko, S. S., Troitskaya, Y. V., Troitsky, I. S., Vasilyev, A. A., Hodges, M., Hovatta, T., Kiehlmann, S., Max-Moerbeck, W., Readhead, A. C. S., Reeves, R. & Pearson, T. J., 29 Mar 2021, In: Astronomy and Astrophysics. 647, 19 p., 163.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      9 Citations (Scopus)
      88 Downloads (Pure)
    • 2020

      Solar polarization observations at 3 and 13 mm

      Kallunki, J., Tornikoski, M., Kirves, P., Oinaskallio, E., Aatrokoski, J., Mujunen, A. & Tammi, J., 2020, In: Astronomische Nachrichten. 341, 1, p. 118-124 7 p.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      1 Citation (Scopus)
      82 Downloads (Pure)
    • Study of the variable broadband emission of Markarian 501 during the most extreme Swift X-ray activity

      Lähteenmäki, A., Tornikoski, M., Tammi, J. & MAGIC Collaboration, 21 May 2020, In: Astronomy & Astrophysics. 637, 27 p., A86.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      18 Citations (Scopus)
      37 Downloads (Pure)
    • The Great Markarian 421 Flare of 2010 February: Multiwavelength Variability and Correlation Studies

      Abeysekara, A. U., Benbow, W., Bird, R., Brill, A., Brose, R., Buchovecky, M., Buckley, J. H., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Dumm, J., Falcone, A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Galante, N., Gent, A., Gillanders, G. H., Giuri, C., & 239 othersGueta, O., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Johnson, C. A., Kaaret, P., Kar, P., Kelley-Hoskins, N., Kertzman, M., Kieda, D., Krause, M., Krennrich, F., Kumar, S., Lang, M. J., Moriarty, P., Mukherjee, R., Nelson, T., Nieto, D., Nievas Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Park, N., Petrashyk, A., Pichel, A., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Richards, G. T., Roache, E., Rovero, A. C., Rulten, C., Sadeh, I., Santander, M., Sembroski, G. H., Shahinyan, K., Stevenson, B., Sushch, I., Tyler, J., Vassiliev, V. V., Wakely, S. P., Weinstein, A., Wells, R. M., Wilcox, P., Wilhelm, A., Williams, D. A., Zitzer, B., Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Baack, D., Babić, A., Banerjee, B., Barres De Almeida, U., Barrio, J. A., Becerra González, J., Bednarek, W., Bellizzi, L., Bernardini, E., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Busetto, G., Carosi, R., Ceribella, G., Chai, Y., Cikota, S., Colak, S. M., Colin, U., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Do Souto Espiñera, E., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Elsaesser, D., Fallah Ramazani, V., Fattorini, A., Fernández-Barral, A., Ferrara, G., Fidalgo, D., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Galindo, D., Gallozzi, S., García López, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Godinović, N., Green, D., Guberman, D., Hadasch, D., Hahn, A., Herrera, J., Hoang, J., Hrupec, D., Inoue, S., Ishio, K., Iwamura, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., López, M., López-Coto, R., López-Oramas, A., Machado De Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Masuda, S., Mazin, D., Miceli, D., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Munar-Adrover, P., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Nöthe, M., Paiano, S., Palacio, J., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Penil, P., Peresano, M., Persic, M., Prada Moroni, P. G., Prandini, E., Puljak, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Somero, A., Stamerra, A., Strom, D., Strzys, M., Sun, S., Surić, T., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Alba, N., Tsujimoto, S., Van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Vovk, I., Will, M., Zarić, D., Aller, H. D., Aller, M. F., Carini, M. T., Horan, D., Jordan, B., Jorstad, S. G., Kurtanidze, O. M., Kurtanidze, S. O., Lahteenmaki, A., Larionov, V. M., Larionova, E. G., Madejski, G., Marscher, A. P., Max-Moerbeck, W., Moody, J. W., Morozova, D. A., Nikolashvili, M. G., Raiteri, C. M., Readhead, A. C. S., Richards, J. L., Sadun, A. C., Sakamoto, T., Sigua, L. A., Smith, P. S., Talvikki, H., Tammi, J., Tornikoski, M., Troitsky, I. S. & Villata, M., 20 Feb 2020, In: The Astrophysical Journal. 890, 2, 97.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      13 Citations (Scopus)
      77 Downloads (Pure)
    • Open Access
      File
      17 Citations (Scopus)
      40 Downloads (Pure)
    • 2019

      Cosmological Evolution of Quasar Radio Emission in the View of Multifractality

      Belete, A. B., Femmam, S., Tornikoski, M., Lahteenmaki, A., Tammi, J., Leao, I. C., Martins, B. L. C. & De Medeiros, J. R., 10 Mar 2019, In: The Astrophysical Journal. 873, 2, 19 p., 108.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      4 Citations (Scopus)
      136 Downloads (Pure)
    • Flare Activity of Blazar AO 0235+164

      Volvach, A. E., Volvach, L. N., Larionov, M. G., Lähteenmäki, A., Tornikoski, M., Tammi, J., Järvelä, E., Vera, R. J. C., Chamani, W. & Enestam, S., 1 Mar 2019, In: Cosmic Research. 57, 2, p. 85-90 6 p.

      Research output: Contribution to journalArticleScientificpeer-review

    • Investigating the multiwavelength behaviour of the flat spectrum radio quasar CTA 102 during 2013-2017

      Lähteenmäki, A., Tammi, J., Tornikoski, M., Hovatta, T., WEBT Collaboration & OVRO Team, Dec 2019, In: Monthly Notices of the Royal Astronomical Society. 490, 4, p. 5300-5316 17 p.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      12 Citations (Scopus)
      39 Downloads (Pure)
    • Long term variability and correlation study of the blazar 3C 454.3 in radio, NIR and optical wavebands

      Sarkar, A., Chitnis, V. R., Gupta, A. C., Gaur, H., Patel, S. R., Wiita, P. J., Volvach, A. E., Tornikoski, M., Chamani, W., Enestam, S., Lähteenmäki, A., Tammi, J., Vera Rodríguez, R. & Volvach, L. N., 20 Dec 2019, In: The Astrophysical Journal. 887, 2, 185.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      15 Citations (Scopus)
      100 Downloads (Pure)
    • 2018

      Characteristics of the Flare Phenomenon in Blazar AO0235+164 in Gamma, Optical, and Radio Bands

      Bychkova, V. S., Volvach, A. E., Volvach, L. N., Kardashev, N. S., Larionov, M. G., Vlasyuk, V. V., Spiridonova, O. I., Lähteenmäki, A., Tornikoski, M., Tammi, J., Järvelä, E., Vera, R. J. C., Chamani, W. & Enestam, S., 1 Jul 2018, In: Astrophysical Bulletin. 73, 3, p. 293-297 5 p.

      Research output: Contribution to journalArticleScientificpeer-review

    • Detection of persistent VHE gamma-ray emission from PKS 1510-089 by the MAGIC telescopes during low states between 2012 and 2017

      Tornikoski, M., Lähteenmäki, A., Tammi, J., Ramakrishnan, V., MAGIC Collaboration & Fermi Large Area Telescope Collaboration, 2018, In: Astronomy and Astrophysics. 619, 12 p., A159.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      25 Citations (Scopus)
      82 Downloads (Pure)
    • Extreme HBL behavior of Markarian 501 during 2012

      MAGIC Collaboration & VERITAS Collaboration, 1 Dec 2018, In: Astronomy and Astrophysics. 620, A181.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      38 Citations (Scopus)
      140 Downloads (Pure)
    • Far-infrared photometry of OJ 287 with the Herschel Space Observatory

      Kidger, M., Zola, S., Valtonen, M., Lähteenmäki, A., Järvelä, E., Tornikoski, M., Tammi, J., Liakos, A. & Poyner, G., 1 Feb 2018, In: Astronomy and Astrophysics. 610, 7 p., 74.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      3 Citations (Scopus)
      170 Downloads (Pure)
    • Forty years of solar radio observations at Metsähovi Radio Observatory

      Kallunki, J., Tornikoski, M., Tammi, J., Kinnunen, E., Korhonen, K., Kesäläinen, S. & Arkko, O., 1 Feb 2018, In: Astronomische Nachrichten. 339, 2-3, p. 204-211 8 p.

      Research output: Contribution to journalArticleScientificpeer-review

      8 Citations (Scopus)
    • Millimetri, senttimetri, desimetri, metri

      Translated title of the contribution: Millimetre, decimetre, centimetre, metreTammi, J., Apr 2018, In: Tähdet ja Avaruus. 3, p. 49-49 1 p.

      Research output: Contribution to journalArticleGeneral public

    • Open Access
      File
      36 Citations (Scopus)
      148 Downloads (Pure)
    • Solar observing system for radio frequencies 5–120 MHz

      Kallunki, J., Tornikoski, M., Oinaskallio, E., Kirves, P., Aatrokoski, J., Mujunen, A. & Tammi, J., 1 Nov 2018, In: Astronomische Nachrichten. 339, 9-10, p. 656-660 5 p.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      3 Citations (Scopus)
      39 Downloads (Pure)
    • The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma-rays

      Lähteenmäki, A., Tammi, J., Tornikoski, M., MAGIC Collaboration & Fermi Large Area Telescope Collaboration, 11 Oct 2018, In: Monthly Notices of the Royal Astronomical Society. 480, 1, p. 879-892 14 p.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      6 Citations (Scopus)
      85 Downloads (Pure)
    • 2017

      37 GHz observations of narrow-line Seyfert 1 galaxies

      Lähteenmäki, A., Järvelä, E., Hovatta, T., Tornikoski, M., Harrison, D. L., López-Caniego, M., Max-Moerbeck, W., Mingaliev, M., Pearson, T. J., Ramakrishnan, V., Readhead, A. C. S., Reeves, R. A., Richards, J. L., Sotnikova, Y. & Tammi, J., 1 Jul 2017, In: Astronomy and Astrophysics. 603, 26 p., A100.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      30 Citations (Scopus)
      345 Downloads (Pure)
    • Blazar spectral variability as explained by a twisted inhomogeneous jet

      Raiteri, C. M., Villata, M., Acosta-Pulido, J. A., Agudo, I., Arkharov, A. A., Bachev, R., Baida, G. V., Benitez, E., Borman, G. A., Boschin, W., Bozhilov, V., Butuzova, M. S., Calcidese, P., Carnerero, M. I., Carosati, D., Casadio, C., Castro-Segura, N., Chen, W. -P., Damljanovic, G., D'Ammando, F., & 66 othersDi Paola, A., Echevarria, J., Efimova, N. V., Ehgamberdiev, S. A., Espinosa, C., Fuentes, A., Giunta, A., Gomez, J. L., Grishina, T. S., Gurwell, M. A., Hiriart, D., Jermak, H., Jordan, B., Jorstad, S. G., Joshi, M., Kopatskaya, E. N., Kuratov, K., Kurtanidze, O. M., Kurtanidze, S. O., Lähteenmaki, A., Larionov, V. M., Larionova, E. G., Larionova, L. V., Lazaro, C., Lin, C. S., Malmrose, M. P., Marscher, A. P., Matsumoto, K., McBreen, B., Michel, R., Mihov, B., Minev, M., Mirzaqulov, D. O., Mokrushina, A. A., Molina, S. N., Moody, J. W., Morozova, D. A., Nazarov, S. V., Nikolashvili, M. G., Ohlert, J. M., Okhmat, D. N., Ovcharov, E., Pinna, F., Polakis, T. A., Protasio, C., Pursimo, T., Redondo-Lorenzo, F. J., Rizzi, N., Rodriguez-Coira, G., Sadakane, K., Sadun, A. C., Samal, M. R., Savchenko, S. S., Semkov, E., Skiff, B. A., Slavcheva-Mihova, L., Smith, P. S., Steele, I. A., Strigachev, A., Tammi, J., Thum, C., Tornikoski, M., Troitskaya, Y. V., Troitsky, I. S., Vasilyev, A. A. & Vince, O., 21 Dec 2017, In: Nature. 552, 7685, p. 374-377 13 p.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      89 Citations (Scopus)
    • Kinematics of Parsec-scale Jets of Gamma-Ray Blazars at 43 GHz within the VLBA-BU-BLAZAR Program

      Jorstad, S. G., Marscher, A. P., Morozova, D. A., Troitsky, I. S., Agudo, I., Casadio, C., Foord, A., Gómez, J. L., MacDonald, N. R., Molina, S. N., Lähteenmäki, A., Tammi, J. & Tornikoski, M., 2017, In: The Astrophysical Journal. 846, 2, 35 p., 98.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      183 Citations (Scopus)
      177 Downloads (Pure)
    • Simultaneous spectra and radio properties of BL Lacs

      Mingaliev, M., Sotnikova, Y., Mufakharov, T. V., Nieppola, E., Tornikoski, M., Tammi, J., Lähteenmäki, A., Udovitskiy, R. Y. & Erkenov, A. K., 24 Aug 2017, In: Astronomische Nachrichten. 338, 6, p. 700–714 15 p.

      Research output: Contribution to journalArticleScientificpeer-review

      4 Citations (Scopus)
    • 2016

      GPS Time Disruptions on 26-Jan-2016

      Mujunen, A., Aatrokoski, J., Tornikoski, M. & Tammi, J., 2016, 15 p. Aalto University.

      Research output: Other contributionScientific

      Open Access
    • Insights into the emission of the blazar 1ES 1011+496 through unprecedented broadband observations during 2011 and 2012

      Aleksić, J., Ansoldi, S., Antonelli, L. A., Antoranz, P., Arcaro, C., Babic, A., Bangale, P., Barres De Almeida, U., Barrio, J. A., Becerra González, J., Bednarek, W., Bernardini, E., Biasuzzi, B., Biland, A., Blanch, O., Bonnefoy, S., Bonnoli, G., Borracci, F., Bretz, T., Carmona, E., & 144 othersCarosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Da Vela, P., Dazzi, F., De Angelis, A., De Caneva, G., De Lotto, B., De Oña Wilhelmi, E., Delgado Mendez, C., Di Pierro, F., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Eisenacher, D., Elsaesser, D., Fernández-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Frantzen, K., Fruck, C., Galindo, D., García López, R. J., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Godinović, N., González Muñoz, A., Gozzini, S. R., Hadasch, D., Hanabata, Y., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Idec, W., Kadenius, V., Kellermann, H., Knoetig, M. L., Kodani, K., Konno, Y., Krause, J., Kubo, H., Kushida, J., La Barbera, A., Lelas, D., Lewandowska, N., Lindfors, E., Lombardi, S., Longo, F., López, M., López-Coto, R., López-Oramas, A., Lorenz, E., Lozano, I., Makariev, M., Mallot, K., Maneva, G., Mannheim, K., Maraschi, L., Marcote, B., Mariotti, M., Martínez, M., Mazin, D., Menzel, U., Miranda, J. M., Mirzoyan, R., Moralejo, A., Munar-Adrover, P., Nakajima, D., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nilsson, K., Nishijima, K., Noda, K., Orito, R., Overkemping, A., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Paredes-Fortuny, X., Persic, M., Poutanen, J., Prada Moroni, P. G., Prandini, E., Puljak, I., Reinthal, R., Rhode, W., Ribó, M., Rico, J., Rodriguez Garcia, J., Saito, T., Saito, K., Satalecka, K., Scalzotto, V., Scapin, V., Schweizer, T., Shore, S. N., Sillanpää, A., Sitarek, J., Snidaric, I., Sobczynska, D., Stamerra, A., Steinbring, T., Strzys, M., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Thaele, J., Torres, D. F., Toyama, T., Treves, A., Vogler, P., Will, M., Zanin, R., Buson, S., D'Ammando, F., Lähteenmäki, A., Hovatta, T., Kovalev, Y. Y., Lister, M. L., Max-Moerbeck, W., Mundell, C., Pushkarev, A. B., Rastorgueva-Foi, E., Readhead, A. C. S., Richards, J. L., Tammi, J., Sanchez, D. A., Tornikoski, M., Savolainen, T. & Steele, I., 2016, In: Astronomy and Astrophysics. 591, 14 p., A10.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      10 Citations (Scopus)
      116 Downloads (Pure)
    • Maailmankaikkeus - uhka vai mahdollisuus?

      Translated title of the contribution: The universe – a threat or an opportunityTammi, J., Sep 2016, In: Tähdet ja Avaruus. 6, p. 57-57 1 p.

      Research output: Contribution to journalArticleGeneral public

    • Multiwavelength Study of Quiescent States of Mrk 421 with Unprecedented Hard X-Ray Coverage Provided by NuSTAR in 2013

      NuSTAR Team, VERITAS Collaboration & MAGIC Collaboration, Mar 2016, In: The Astrophysical Journal. 819, 2, 30 p., 156.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      86 Citations (Scopus)
      259 Downloads (Pure)
    • Nonlinear synchrotron self-Compton modelling of blazars

      Anjum, M. S. & Tammi, J., 10 Jun 2016, Aerospace Science and Engineering (ICASE), 2015 Fourth International Conference on. IEEE, 8 p. 7489524

      Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

      1 Citation (Scopus)
    • Planck intermediate results. XLV. Radio spectra of northern extragalactic radio sources

      Planck Collaboration, 2016, In: Astronomy & Astrophysics. 596, A106.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      185 Downloads (Pure)
    • Supporting reflective learning with online tools

      Kiviluoma, P., Lähteenmäki, A. & Tammi, J., 2016, Proceedings of the Conference SEFI 2016: Engineering Education on Top of the World: Industry University Cooperation. SEFI - European Society For Engineering Education, 9 p.

      Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    • 2015

      Connection between parsec-scale radio jet and gamma-ray flares in the blazar 1156+295

      Ramakrishnan, V., Leon Tavares, J., Rastorgueva-Foi, E. A., Wiik, K., Jorstad, S. G., Marscher, A. P., Tornikoski, M., Agudo, I., Lähteenmäki, A., Valtaoja, E., Aller, M. F., Blinov, D. A., Casadio, C., Efimova, N. V., Gurwell, M. A., Gómez, J. L., Hagen-Thorn, V. A., Joshi, M., Järvelä, E., Konstantinova, T. S., & 13 othersKopatskaya, E. N., Larionov, V. M., Larionova, E. G., Larionova, L. V., Lavonen, N., MacDonald, N. R., McHardy, I. M., Molina, S. N., Morozova, D. A., Nieppola, E., Tammi, J., Taylor, B. W. & Troitsky, I. S., 2015, 12th European VLBI Network Symposium, Cagliari, Italy, Oct 2014. Scuola Internazionale Superiore di Studi Avanzati (S I S S A), 6 p.

      Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    • First NuSTAR Observations of Mrk 501 within a Radio to TeV Multi-Instrument Campaign

      NuSTAR Team, MAGIC Collaboration & VERITAS Collaboration, Oct 2015, In: The Astrophysical Journal. 812, 1, p. 65

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      51 Citations (Scopus)
      32 Downloads (Pure)
    • Properties of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies

      Foschini, L., Berton, M., Caccianiga, A., Ciroi, S., Cracco, V., Peterson, B. M., Angelakis, E., Braito, V., Fuhrmann, L., Gallo, L., Grupe, D., Järvelä, E., Kaufmann, S., Komossa, S., Kovalev, Y. Y., Lähteenmäki, A., Lisakov, M. M., Lister, M. L., Mathur, S., Richards, J. L., & 10 othersRomano, P., Sievers, A., Tagliaferri, G., Tammi, J., Tibolla, O., Tornikoski, M., Vercellone, S., La Mura, G., Maraschi, L. & Rafanelli, P., 2015, In: Astronomy and Astrophysics. 575, 1, p. p. A13

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      125 Citations (Scopus)
      178 Downloads (Pure)
    • The 2009 multiwavelength campaign on Mrk 421: Variability and correlation studies

      MAGIC Collaboration & VERITAS Collaboration, 2015, In: Astronomy and Astrophysics. 576, p. p. A126

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      125 Downloads (Pure)
    • The WEBT campaign on the BL Lac object PG 1553+113 in 2013. An analysis of the enigmatic synchrotron emission

      Raiteri, C. M., Stamerra, A., Villata, M., Larionov, V. M., Acosta-Pulido, J. A., Arévalo, M. J., Arkharov, A. A., Bachev, R., Benítez, E., Bozhilov, V. V., Borman, G. A., Buemi, C. S., Calcidese, P., Carnerero, M. I., Carosati, D., Chigladze, R. A., Damljanovic, G., Di Paola, A., Doroshenko, V. T., Efimova, N. V., & 42 othersEhgamberdiev, S. A., Giroletti, M., González-Morales, P. A., Grinon-Marin, A. B., Grishina, T. S., Hiriart, D., Ibryamov, S., Klimanov, S. A., Kopatskaya, E. N., Kurtanidze, O. M., Kurtanidze, S. O., Kurtenkov, A. A., Larionova, L. V., Larionova, E. G., Lázaro, C., Lähteenmäki, A., Leto, P., Markovic, G., Mirzaqulov, D. O., Mokrushina, A. A., Morozova, D. A., Mújica, R., Nazarov, S. V., Nikolashvili, M. G., Ohlert, J. M., Ovcharov, E. P., Paiano, S., Pastor Yabar, A., Prandini, E., Ramakrishnan, V., Sadun, A. C., Semkov, E., Sigua, L. A., Strigachev, A., Tammi, J., Tornikoski, M., Trigilio, C., Troitskaya, Y. V., Troitsky, I. S., Umana, G., Velasco, S. & Vince, O., Nov 2015, In: Monthly Notices of the Royal Astronomical Society. 454, 1, p. 353-367

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      29 Citations (Scopus)
      150 Downloads (Pure)
    • 2014

      Connection between parsec-scale radio jet and gamma-ray flares in the blazar 1156+295

      Ramakrishnan, V., León-Tavares, J., Rastorgueva-Foi, E. A., Wiik, K., Jorstad, S. G., Marscher, A. P., Tornikoski, M., Agudo, I., Lähteenmäki, A., Valtaoja, E., Aller, M. F., Blinov, D. A., Casadio, C., Efimova, N. V., Gurwell, M. A., Gómez, J. L., Hagen-Thorn, V. A., Joshi, M., Järvelä, E., Konstantinova, T. S., & 13 othersKopatskaya, E. N., Larionov, V. M., Larionova, E. G., Larionova, L. V., Lavonen, N., MacDonald, N. R., McHardy, I. M., Molina, S. N., Morozova, D. A., Nieppola, E., Tammi, J., Taylor, B. W. & Troitsky, I. S., 1 Jan 2014, In: Proceedings of Science. 015.

      Research output: Contribution to journalConference articleScientificpeer-review

    • Havaintoja paljaalla mutta kriittisellä silmällä

      Tammi, J., 2014, In: Tähdet ja Avaruus. 5, p. 69

      Research output: Contribution to journalArticleGeneral public

    • Long-term, multi-frequency monitoring of the blazar S0528+134 (Nimfa)

      "Vol'vach", A. E., Kutkin, A. M., Larionov, M. G., "Vol'vach", L. N., Lahteenmaki, A., Tornikoski, M., Tammi, J., Savolainen, P., Aller, M. F., Aller, H. D. & Sasada, M., 2014, In: Astronomy Reports. 58, 2, p. 71-77

      Research output: Contribution to journalArticleScientificpeer-review

      7 Citations (Scopus)
    • MAGIC gamma-ray and multi-frequency observations of flat spectrum radio quasar PKS 1510-089 in early 2012

      MAGIC Collaboration, AGILE Collaboration & Fermi Large Area Telescope Collaboration, 2014, In: Astronomy and Astrophysics. 569, 21 p., A46.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      77 Citations (Scopus)
      100 Downloads (Pure)
    • MAGIC observations and multifrequency properties of the flat spectrum radio quasar 3C 279 in 2011

      Aleksic, J., Ansoldi, S., Antonelli, L. A., Lähteenmäki, A. & Tammi, J., 2014, In: Astronomy and Astrophysics. 567, A41.

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      34 Citations (Scopus)
      52 Downloads (Pure)
    • The connection between the parsec-scale radio jet and gamma-ray flares in the blazar 1156+295

      Ramakrishnan, V., León-Tavares, J., Rastorgueva-Foi, E. A., Wiik, K., Jorstad, S. G., Marscher, A. P., Tornikoski, M., Agudo, I., Lähteenmäki, A., Valtaoja, E., Aller, M. F., Blinov, D. A., Casadio, C., Efimova, N. V., Gurwell, M. A., Gómez, J. L., Hagen-Thorn, V. A., Joshi, M., Järvelä, E., Konstantinova, T. S., & 13 othersKopatskaya, E. N., Larionov, V. M., Larionova, E. G., Larionova, L. V., Lavonen, N., MacDonald, N. R., McHardy, I. M., Molina, S. N., Morozova, D. A., Nieppola, E., Tammi, J., Taylor, B. W. & Troitsky, I. S., 2014, In: Monthly Notices of the Royal Astronomical Society. 445, 2

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      17 Citations (Scopus)
      190 Downloads (Pure)
    • The Outburst of the Blazar S4 0954+658 in 2011 March-April

      Morozova, D. A., Larionov, V. M., Troitsky, I. S., Jorstad, S. G., Marscher, A. P., Gómez, J. L., Blinov, D. A., Efimova, N. V., Hagen-Thorn, V. A., Hagen-Thorn, E. I., Joshi, M., Konstantinova, T. S., Kopatskaya, E. N., Larionova, L. V., Larionova, E. G., Lähteenmäki, A., Tammi, J., Rastorgueva-Foi, E., McHardy, I., Tornikoski, M., & 5 othersAgudo, I., Casadio, C., Molina, S. N., Volvach, A. E. & Volvach, L. N., 2014, In: The Astrophysical Journal. 148, 3

      Research output: Contribution to journalArticleScientificpeer-review

      Open Access
      File
      29 Citations (Scopus)
      387 Downloads (Pure)
    • 2013

      A prolonged flare in the blazar 3C 454.3

      "Vol'vach", A. E., Kutkin, A. M., Larionov, M. G., "Vol'vach", L. N., Lahteenmaki, A., Tornikoski, M., Tammi, J., Léon-Tavares, J., Järvelä, E., Aller, M. F. & Aller, H. D., 2013, In: Astronomy Reports. 57, 1, p. 46-51

      Research output: Contribution to journalArticleScientificpeer-review

      6 Citations (Scopus)
    Your message has successfully been sent.
    Your message was not sent due to an error.