The off-axis jet structure in Mrk 501 at mm-wavelengths

Shoko Koyama; Motoki Kino; Marcello Giroletti; Akihiro Doi; Hiroshi Nagai; Kazuhiro Hada; Kotaro Niinuma; Monica Orienti; Gabriele Giovannini; Eduardo Ros; T. Savolainen; Miguel Á. Pérez-Torres; Thomas P. Krichbaum

The off-axis jet structure in Mrk 501 at mm-wavelengths

Shoko Koyama, Motoki Kino, Marcello Giroletti, Akihiro Doi, Hiroshi Nagai, Kazuhiro Hada, Kotaro Niinuma, Monica Orienti, Gabriele Giovannini, Eduardo Ros, T. Savolainen, Miguel Á. Pérez-Torres, Thomas P. Krichbaum

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

We present results from 43 GHz (VLBA, six epochs from 2012.2 to 2013.2) and 86 GHz (GMVA,
one epoch in 2012.4) observations toward the basis of the jet in the TeV Blazar Mrk 501. The
43-GHz data analysis reveals a new feature located northeast of the radio core, with a flux density
of several tens of mJy, perpendicularly to the jet axis. The 86-GHz image shows the jet feature
located 0.75 mas southeast of the radio core, which is consistent with previous result. The location
of Gaussian model for 0.75 mas feature does not coincide with those for the jets in the 43-GHz
image, however, a distribution of emission is found. We also discuss the spectral indices of the
core, the northeast feature, and the jet feature between 43 GHz and 86 GHz, which show flat-to-
steep, steep, and flat-to-invert, respectively.

Original language	English
Title of host publication	Proceedings of the 12th European VLBI Network Symposium and Users Meeting (EVN 2014)
Publisher	International School for Advanced Studies (SISSA)
Number of pages	4
Publication status	Published - 2015
MoE publication type	A4 Conference publication
Event	European VLBI Network Symposium and Users Meeting - Cagliari, Italy Duration: 7 Oct 2014 → 10 Oct 2014 Conference number: 12

Publication series

Name	POS Proceedings of Science
Publisher	International School for Advanced Studies
ISSN (Electronic)	1824-8039

Conference

Conference	European VLBI Network Symposium and Users Meeting
Abbreviated title	EVN Symposium
Country/Territory	Italy
City	Cagliari
Period	07/10/2014 → 10/10/2014

Access to Document

Metsähovi Radio Observatory
Tammi, J. (Manager)
School of Electrical Engineering
Facility/equipment: Facility

Cite this

Koyama, S., Kino, M., Giroletti, M., Doi, A., Nagai, H., Hada, K., Niinuma, K., Orienti, M., Giovannini, G., Ros, E., Savolainen, T., Pérez-Torres, M. Á., & Krichbaum, T. P. (2015). The off-axis jet structure in Mrk 501 at mm-wavelengths. In Proceedings of the 12th European VLBI Network Symposium and Users Meeting (EVN 2014) (POS Proceedings of Science). International School for Advanced Studies (SISSA). http://adsabs.harvard.edu/abs/2014evn..confE..91K

@inproceedings{fbbd8d7600254cf3af9c2aa979045970,

title = "The off-axis jet structure in Mrk 501 at mm-wavelengths",

abstract = "We present results from 43 GHz (VLBA, six epochs from 2012.2 to 2013.2) and 86 GHz (GMVA,one epoch in 2012.4) observations toward the basis of the jet in the TeV Blazar Mrk 501. The43-GHz data analysis reveals a new feature located northeast of the radio core, with a flux densityof several tens of mJy, perpendicularly to the jet axis. The 86-GHz image shows the jet featurelocated 0.75 mas southeast of the radio core, which is consistent with previous result. The locationof Gaussian model for 0.75 mas feature does not coincide with those for the jets in the 43-GHzimage, however, a distribution of emission is found. We also discuss the spectral indices of thecore, the northeast feature, and the jet feature between 43 GHz and 86 GHz, which show flat-to-steep, steep, and flat-to-invert, respectively.",

author = "Shoko Koyama and Motoki Kino and Marcello Giroletti and Akihiro Doi and Hiroshi Nagai and Kazuhiro Hada and Kotaro Niinuma and Monica Orienti and Gabriele Giovannini and Eduardo Ros and T. Savolainen and P{\'e}rez-Torres, {Miguel {\'A}.} and Krichbaum, {Thomas P.}",

year = "2015",

language = "English",

series = "POS Proceedings of Science",

publisher = "International School for Advanced Studies (SISSA)",

booktitle = "Proceedings of the 12th European VLBI Network Symposium and Users Meeting (EVN 2014)",

address = "Italy",

note = "European VLBI Network Symposium and Users Meeting, EVN Symposium ; Conference date: 07-10-2014 Through 10-10-2014",

}

Koyama, S, Kino, M, Giroletti, M, Doi, A, Nagai, H, Hada, K, Niinuma, K, Orienti, M, Giovannini, G, Ros, E, Savolainen, T, Pérez-Torres, MÁ & Krichbaum, TP 2015, The off-axis jet structure in Mrk 501 at mm-wavelengths. in Proceedings of the 12th European VLBI Network Symposium and Users Meeting (EVN 2014) . POS Proceedings of Science, International School for Advanced Studies (SISSA), European VLBI Network Symposium and Users Meeting, Cagliari, Italy, 07/10/2014. <http://adsabs.harvard.edu/abs/2014evn..confE..91K>

The off-axis jet structure in Mrk 501 at mm-wavelengths. / Koyama, Shoko; Kino, Motoki; Giroletti, Marcello et al.
Proceedings of the 12th European VLBI Network Symposium and Users Meeting (EVN 2014) . International School for Advanced Studies (SISSA), 2015. (POS Proceedings of Science).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - The off-axis jet structure in Mrk 501 at mm-wavelengths

AU - Koyama, Shoko

AU - Kino, Motoki

AU - Giroletti, Marcello

AU - Doi, Akihiro

AU - Nagai, Hiroshi

AU - Hada, Kazuhiro

AU - Niinuma, Kotaro

AU - Orienti, Monica

AU - Giovannini, Gabriele

AU - Ros, Eduardo

AU - Savolainen, T.

AU - Pérez-Torres, Miguel Á.

AU - Krichbaum, Thomas P.

N1 - Conference code: 12

PY - 2015

Y1 - 2015

N2 - We present results from 43 GHz (VLBA, six epochs from 2012.2 to 2013.2) and 86 GHz (GMVA,one epoch in 2012.4) observations toward the basis of the jet in the TeV Blazar Mrk 501. The43-GHz data analysis reveals a new feature located northeast of the radio core, with a flux densityof several tens of mJy, perpendicularly to the jet axis. The 86-GHz image shows the jet featurelocated 0.75 mas southeast of the radio core, which is consistent with previous result. The locationof Gaussian model for 0.75 mas feature does not coincide with those for the jets in the 43-GHzimage, however, a distribution of emission is found. We also discuss the spectral indices of thecore, the northeast feature, and the jet feature between 43 GHz and 86 GHz, which show flat-to-steep, steep, and flat-to-invert, respectively.

AB - We present results from 43 GHz (VLBA, six epochs from 2012.2 to 2013.2) and 86 GHz (GMVA,one epoch in 2012.4) observations toward the basis of the jet in the TeV Blazar Mrk 501. The43-GHz data analysis reveals a new feature located northeast of the radio core, with a flux densityof several tens of mJy, perpendicularly to the jet axis. The 86-GHz image shows the jet featurelocated 0.75 mas southeast of the radio core, which is consistent with previous result. The locationof Gaussian model for 0.75 mas feature does not coincide with those for the jets in the 43-GHzimage, however, a distribution of emission is found. We also discuss the spectral indices of thecore, the northeast feature, and the jet feature between 43 GHz and 86 GHz, which show flat-to-steep, steep, and flat-to-invert, respectively.

M3 - Conference article in proceedings

T3 - POS Proceedings of Science

BT - Proceedings of the 12th European VLBI Network Symposium and Users Meeting (EVN 2014)

PB - International School for Advanced Studies (SISSA)

T2 - European VLBI Network Symposium and Users Meeting

Y2 - 7 October 2014 through 10 October 2014

ER -

The off-axis jet structure in Mrk 501 at mm-wavelengths

Abstract

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