A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1
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 hig...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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OXFORD UNIV PRESS
2020
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/FT140101082 http://hdl.handle.net/20.500.11937/90028 |
| _version_ | 1848765313934426112 |
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| author | Kantzas, D. Markoff, S. Beuchert, T. Lucchini, M. Chhotray, A. Ceccobello, C. Tetarenko, A.J. Miller-Jones, James Bremer, M. Garcia, J.A. Grinberg, V. Uttley, P. Wilms, J. |
| author_facet | Kantzas, D. Markoff, S. Beuchert, T. Lucchini, M. Chhotray, A. Ceccobello, C. Tetarenko, A.J. Miller-Jones, James Bremer, M. Garcia, J.A. Grinberg, V. Uttley, P. Wilms, J. |
| author_sort | Kantzas, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T11:33:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-90028 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:33:16Z |
| publishDate | 2020 |
| publisher | OXFORD UNIV PRESS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-900282023-02-07T06:33:31Z A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1 Kantzas, D. Markoff, S. Beuchert, T. Lucchini, M. Chhotray, A. Ceccobello, C. Tetarenko, A.J. Miller-Jones, James Bremer, M. Garcia, J.A. Grinberg, V. Uttley, P. Wilms, J. Science & Technology Physical Sciences Astronomy & Astrophysics acceleration of particles radiation mechanisms: non-thermal X-rays: individual: Cyg X-1 GAMMA-RAY EMISSION BROAD-BAND SPECTRUM BL-LAC OBJECTS PARTICLE-ACCELERATION MAGNETIC RECONNECTION RELATIVISTIC JETS SYNCHROTRON-RADIATION SHOCK ACCELERATION RADIO-EMISSION XTE J1118+480 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. 2020 Journal Article http://hdl.handle.net/20.500.11937/90028 10.1093/mnras/staa3349 English http://purl.org/au-research/grants/arc/FT140101082 OXFORD UNIV PRESS fulltext |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics acceleration of particles radiation mechanisms: non-thermal X-rays: individual: Cyg X-1 GAMMA-RAY EMISSION BROAD-BAND SPECTRUM BL-LAC OBJECTS PARTICLE-ACCELERATION MAGNETIC RECONNECTION RELATIVISTIC JETS SYNCHROTRON-RADIATION SHOCK ACCELERATION RADIO-EMISSION XTE J1118+480 Kantzas, D. Markoff, S. Beuchert, T. Lucchini, M. Chhotray, A. Ceccobello, C. Tetarenko, A.J. Miller-Jones, James Bremer, M. Garcia, J.A. Grinberg, V. Uttley, P. Wilms, J. A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1 |
| title | A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1 |
| title_full | A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1 |
| title_fullStr | A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1 |
| title_full_unstemmed | A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1 |
| title_short | A new lepto-hadronic model applied to the first simultaneous multiwavelength data set for Cygnus X-1 |
| title_sort | new lepto-hadronic model applied to the first simultaneous multiwavelength data set for cygnus x-1 |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics acceleration of particles radiation mechanisms: non-thermal X-rays: individual: Cyg X-1 GAMMA-RAY EMISSION BROAD-BAND SPECTRUM BL-LAC OBJECTS PARTICLE-ACCELERATION MAGNETIC RECONNECTION RELATIVISTIC JETS SYNCHROTRON-RADIATION SHOCK ACCELERATION RADIO-EMISSION XTE J1118+480 |
| url | http://purl.org/au-research/grants/arc/FT140101082 http://hdl.handle.net/20.500.11937/90028 |