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A new lepto-hadroni...
A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1
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- Kantzas, D. (author)
- Universiteit Van Amsterdam,University of Amsterdam
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- Markoff, S. (author)
- Universiteit Van Amsterdam,University of Amsterdam
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- Beuchert, T. (author)
- Universiteit Van Amsterdam,University of Amsterdam,European Southern Observatory (ESO)
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- Lucchini, M. (author)
- Universiteit Van Amsterdam,University of Amsterdam
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- Chhotray, A. (author)
- Universiteit Van Amsterdam,University of Amsterdam
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- Ceccobello, Chiara, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Tetarenko, Alexandra J. (author)
- East Asian Observatory
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- Miller-Jones, J. C. A. (author)
- Curtin University
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- Bremer, M. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Garcia, J. A. (author)
- California Institute of Technology (Caltech)
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- Grinberg, V. (author)
- Eberhard Karls Universität Tübingen,Eberhard Karls University of Tübingen
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- Uttley, P. (author)
- Universiteit Van Amsterdam,University of Amsterdam
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Wilms, J. (author)
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(creator_code:org_t)
- 2020-10-29
- 2020
- English.
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In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 500:2, s. 2112-2126
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Abstract
Subject headings
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- Cygnus X-1 is the first Galactic source confirmed to host an accreting black hole. It has been detected across the entire electromagnetic spectrum from radio to GeV gamma-rays. The source's radio through mid-infrared radiation is thought to originate from the relativistic jets. The observed high degree of linear polarization in the MeV X-rays suggests that the relativistic jets dominate in this regime as well, whereas a hot accretion flow dominates the soft X-ray band. The origin of the GeV non-thermal emission is still debated, with both leptonic and hadronic scenarios deemed to be viable. In this work, we present results from a new semi-analytical, multizone jet model applied to the broad-band spectral energy distribution of Cygnus X-1 for both leptonic and hadronic scenarios. We try to break this degeneracy by fitting the first-ever high-quality, simultaneous multiwavelength data set obtained from the CHOCBOX campaign (Cygnus X-1 Hard state Observations of a Complete Binary Orbit in X-rays). Our model parametrizes dynamical properties, such as the jet velocity profile, the magnetic field, and the energy density. Moreover, the model combines these dynamical properties with a self-consistent radiative transfer calculation including secondary cascades, both of leptonic and hadronic origin. We conclude that sensitive TeV gamma-ray telescopes like Cherenkov Telescope Array (CTA) will definitively answer the question of whether hadronic processes occur inside the relativistic jets of Cygnus X-1.
Subject headings
- 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
- X-rays: individual: Cyg X-1
- acceleration of particles
- radiation mechanisms: non-thermal
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Kantzas, D.
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Markoff, S.
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Beuchert, T.
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Lucchini, M.
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Chhotray, A.
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Ceccobello, Chia ...
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show more...
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Tetarenko, Alexa ...
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Miller-Jones, J. ...
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Bremer, M.
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Garcia, J. A.
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Grinberg, V.
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Uttley, P.
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Wilms, J.
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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 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 ...
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Monthly Notices ...
- By the university
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Chalmers University of Technology