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A ring accelerator?...
A ring accelerator? Unusual jet dynamics in the IceCube candidate PKS 1502+106
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- Britzen, S. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Fendt, C. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Tramacere, A. (author)
- Université de Genève,University of Geneva
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- Pashchenko, I. N. (author)
- Russian Academy of Sciences
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- Jaron, Frédéric, 1980 (author)
- Technische Universität Wien,Vienna University of Technology,Chalmers tekniska högskola,Chalmers University of Technology,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Panis, R. (author)
- Silesian University Opava
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- Petrov, L. (author)
- NASA Goddard Space Flight Center
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- Aller, M. F. (author)
- University of Michigan
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- Aller, H. D. (author)
- University of Michigan
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- Zajacek, M. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Polish Academy of Sciences,Universität zu Köln,University of Cologne
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- Popovic, L. C. (author)
- Univerzitet u Beogradu,University of Belgrade,Astronomical Observatory Belgrade
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Max Planck Gesellschaft zur Förderung der Wissenschaften eV. (MPG) Université de Genève (creator_code:org_t)
- 2021-03-17
- 2021
- English.
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In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 503:3, s. 3145-3178
- Related links:
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http://arxiv.org/pdf...
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Abstract
Subject headings
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- On 2019/07/30.86853 UT, IceCube detected a high-energy astrophysical neutrino candidate. The Flat Spectrum Radio Quasar PKS 1502+106 is located within the 50 per cent uncertainty region of the event. Our analysis of 15 GHz Very Long Baseline Array (VLBA) and astrometric 8 GHz VLBA data, in a time span prior and after the IceCube event, reveals evidence for a radio ring structure that develops with time. Several arc-structures evolve perpendicular to the jet ridge line. We find evidence for precession of a curved jet based on kinematic modelling and a periodicity analysis. An outflowing broad line region (BLR) based on the C IV line emission (Sloan Digital Sky Survey) is found. We attribute the atypical ring to an interaction of the precessing jet with the outflowing material. We discuss our findings in the context of a spine-sheath scenario where the ring reveals the sheath and its interaction with the surroundings (narrow line region, NLR, clouds). We find that the radio emission is correlated with the gamma-ray emission, with radio lagging the gamma-rays. Based on the gamma-ray variability time-scale, we constrain the gamma-ray emission zone to the BLR (30-200 r(g)) and within the jet launching region. We discuss that the outflowing BLR provides the external radiation field for gamma-ray production via external Compton scattering. The neutrino is most likely produced by proton-proton interaction in the blazar zone (beyond the BLR), enabled by episodic encounters of the jet with dense clouds, i.e. some molecular cloud in the NLR.
Subject headings
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies: active
- galaxies: jets
- astroparticle physics
- black hole physics
- quasars: individual: PKS 1502+106
- techniques: interferometric
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Britzen, S.
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Fendt, C.
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Tramacere, A.
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Pashchenko, I. N ...
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Jaron, Frédéric, ...
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Panis, R.
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show more...
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Petrov, L.
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Aller, M. F.
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Aller, H. D.
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Zajacek, M.
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Popovic, L. C.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Accelerator Phys ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Monthly Notices ...
- By the university
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Chalmers University of Technology