0540799 - FZÚ 2021 RIV FR eng J - Journal Article
Britzen, S. - Fendt, C. - Bottcher, M. - Zajaček, M. - Jaron, F. - Pashchenko, I. N. - Araudo, Anabella Teresa - Karas, V. - Kurtanidze, O.
A cosmic collider: was the IceCube neutrino generated in a precessing jet-jet interaction in TXS 0506+056?
Astronomy & Astrophysics. Roč. 630, Oct (2019), s. 1-17, č. článku A103. ISSN 0004-6361. E-ISSN 1432-0746
Institutional support: RVO:68378271
Keywords : black hole physics * techniques: interferometric * BL Lacertae objects: individual: TXS 0506+056
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 5.636, year: 2019
Method of publishing: Open access

The neutrino event IceCube−170922A appears to originate from the BL Lac object TXS 0506+056. To understand the neutrino creation process and to localize the emission site, we studied the radio images of the jet at 15 GHz. Aims. Other BL Lac objects show properties similar to those of TXS 0506+056, such as multiwavelength variability or a curved jet. However, to date only TXS 0506+056 has been identified as neutrino emitter. The aim of this paper is to determine what makes the parsec-scale jet of TXS 0506+056 specific in this respect. Methods. We reanalyzed and remodeled 16 VLBA 15 GHz observations between 2009 and 2018. We thoroughly examined the jet kinematics and flux-density evolution of individual jet components during the time of enhanced neutrino activity between September 2014 and March 2015, and in particular before and after the neutrino event.

Permanent Link: http://hdl.handle.net/11104/0318398