Research output per year
Research output per year
Personal profile
Artistic and research interests
I study active galactic nuclei (AGN) at various frequencies from radio to the TeV domain. By performing multifrequency observations of both bright blazar-type and fainter low-luminosity sources such as narrow-line Seyfert 1 galaxies, I aim to examine the evolution of AGN and the triggering of relativistic jets in them. My main interest is radio astronomy and the observations we perform with the 14-m Metsähovi Radio Observatory antenna at high radio frequencies.
Education/Academic qualification
Doctoral degree, Engineering and Technology, Helsinki University of Technology
Award Date: 6 Sept 1999
Master's degree, Natural Sciences, University of Turku
Award Date: 27 Sept 1995
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Collaborations and top research areas from the last five years
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Research output
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Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations
Lähteenmäki, A., Tornikoski, M., MAGIC Collaboration, VERITAS Collaboration & Fermi Large Area Telescope Collaboration, 1 Feb 2025, In: Astronomy and Astrophysics. 694, 20 p., A195.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile1 Citation (Scopus)11 Downloads (Pure) -
Gamma-ray flares from the jet of the blazar CTA 102 in 2016–2018
Kim, S., Lee, S. S., Algaba, J. C., Rani, B., Park, J., Jeong, H. W., Cheong, W. Y., D’Ammando, F., Lähteenmäki, A., Tornikoski, M., Tammi, J., Ramakrishnan, V., Agudo, I., Casadio, C., Escudero, J., Fuentes, A., Traianou, E., Myserlis, I. & Thum, C., 1 Feb 2025, In: Astronomy and Astrophysics. 694, A291.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile2 Downloads (Pure) -
Long-term radio variability of active galactic nuclei at 37 GHz
Kankkunen, S., Tornikoski, M., Hovatta, T. & Lähteenmäki, A., 1 Jan 2025, In: Astronomy and Astrophysics. 693, 22 p., A318.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile1 Citation (Scopus)6 Downloads (Pure) -
Multi-epoch leptohadronic modeling of neutrino source candidate blazar PKS 0735+178
Omeliukh, A., Garrappa, S., Ramazani, V. F., Franckowiak, A., Winter, W., Lindfors, E., Nilsson, K., Jormanainen, J., Wierda, F., Filippenko, A. V., Zheng, W., Tornikoski, M., Lahteenmaki, A., Kankkunen, S. & Tammi, J., 27 Mar 2025, In: Astronomy & Astrophysics. 695, p. 1-15 15 p., A266.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile3 Downloads (Pure) -
Multiwavelength study of OT 081: broadband modelling of a transitional blazar
Hovatta, T., Lähteenmäki, A., Tornikoski, M., Fermi Large Area Telescope Collaboration, MWL Collaborators , MAGIC Collaboration & VHE Gamma-ray collaborators, 1 Jun 2025, In: Monthly Notices of the Royal Astronomical Society. 540, 1, p. 364-384 21 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile6 Downloads (Pure)
Prizes
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Gruber Cosmology Prize 2018
Lähteenmäki, A. (Recipient), 2018
Prize: Award or honor granted for a specific work
Activities
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ESO Workshop “Revisiting narrow-line Seyfert 1 galaxies and their place in the Universe”
Lähteenmäki, A. (Member)
Apr 2018Activity: Participating in or organising an event types › Membership of a scientific or program committee of a conference or seminar
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International Astronomical Union General Assembly Focus Meeting
Lähteenmäki, A. (Member)
22 Aug 2018 → 23 Aug 2018Activity: Participating in or organising an event types › Membership of an organizing committee or other positions of trust of a conference or a seminar
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Space Telescope Science Institute (External organisation)
Lähteenmäki, A. (Member)
2016Activity: Memberships (typically long-term positions of trust) › Position of trust in a society or network
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COSPAR Scientific Assembly
Lähteenmäki, A. (Member)
2016Activity: Participating in or organising an event types › Membership of a scientific or program committee of a conference or seminar
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41st COSPAR Scientific Assembly session “Radio galaxies: resolving the AGN phenomenon”, Istanbul, Turkey, 30.7.–7.8.2016, Turkey
Lähteenmäki, A. (Contributor)
2016Activity: Talk or presentation types › Conference presentation
Press/Media
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Kaksoismusta-aukon toinenkin aukko havaittu ensimmäisen kerran
Lähteenmäki, A. & Tornikoski, M.
06/06/2023
1 item of Media coverage
Press/Media: Media appearance
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Kvasaarit loistavat poikkeuksellisen kirkkaasti, sillä niiden mustiin aukkoihin valuu ainetta ympäristöstä
Savolainen, T. & Lähteenmäki, A.
31/05/2022 → 08/11/2022
2 Media contributions
Press/Media: Media appearance
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Katso animaatio: Tanssivat mustat aukot löydetty miljardien valovuosien päästä – Kirkkonummen Metsähovin observatorion havainnot tärkeässä roolissa
Tornikoski, M. & Lähteenmäki, A.
27/02/2022
1 item of Media coverage
Press/Media: Media appearance
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Radiohavainnot paljastivat mustien aukkojen tanssin
Tornikoski, M. & Lähteenmäki, A.
23/02/2022
1 item of Media coverage
Press/Media: Media appearance