Journal articles
Characterizing X-ray and Radio emission in the Black Hole X-Ray Binary V404 Cygni during Quiescence
Vikram Rana
1
Alan Loh
2
Stéphane Corbel
3
John A. Tomsick
4
Deepto Chakrabarty
5
Dominic J. Walton
1
Didier Barret
6
Steven E. Boggs
4
Finn E. Christensen
7
William Craig
8, 4
Felix Fuerst
1
Poshak Gandhi
9
Brian W. Grefenstette
1
Charles Hailey
10
Fiona A. Harrison
1
Kristin K. Madsen
1
Farid Rahoui
11
Daniel Stern
10
Shriharsh Tendulkar
1
William W. Zhang
12
Deepto Chakrabarty 5
Author
Dominic J. Walton 1
Author
Didier Barret 6
Author
Steven E. Boggs 4
Author
Brian W. Grefenstette 1
Author
Charles Hailey 10
Author
Fiona A. Harrison 1
Author
Kristin K. Madsen 1
Author
Farid Rahoui 11
Author
Daniel Stern 10
Author
Shriharsh Tendulkar 1
Author
William W. Zhang 12
Author
1
Cahill Center for Astronomy and Astrophysics (1216 E California Blvd, Pasadena, CA 91125, États-Unis - United States)
- CALTECH - California Institute of Technology (1200 East California Blvd, Pasadena, California 91125 - United States)
2
AIM (UMR_7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation (AIM - UMR 7158 - UMR E 9005,
ex "Astrophysique Interactions Multi-échelles",
Service d'astrophysique,
CEA/Saclay,
Orme des Merisiers
F-91191 GIF SUR YVETTE CEDEX - France)
- CNRS - Centre National de la Recherche Scientifique : UMR_7158 (France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : UMR_E_9005 (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- UPD7 - Université Paris Diderot - Paris 7 : UMR_7158 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
3
USN - Unité Scientifique de la Station de Nançay (18330 NANCAY - France)
- INSU - CNRS - Institut national des sciences de l'Univers : USR704 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris : USR 704 (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - Université Paris sciences et lettres (60 rue Mazarine 75006 Paris - France)
- OSUC - Observatoire des Sciences de l'Univers en région Centre (Campus Géosciences, 1A rue de la Férollerie, 45071 Orléans - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - Université Paris sciences et lettres (60 rue Mazarine 75006 Paris - France)
- UO - Université d'Orléans (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- CNRS - Centre National de la Recherche Scientifique : UAR3116 / UMS3116 (France)
- CNRS - Centre National de la Recherche Scientifique : UAR704 / USR704 (France)
- UO - Université d'Orléans : USR 704 (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
4
SSL - Space Sciences Laboratory [Berkeley] (7 Gauss Way, Berkeley, CA 94720 - United States)
- University of California [Berkeley] (Berkeley, CA - United States)
- University of California (United States)
5
MIT Kavli Institute for Astrophysics and Space Research (70 Vassar Street, Cambridge, MA 02139, USA - United States)
- MIT - Massachusetts Institute of Technology (77 Massachusetts Ave, Cambridge, MA 02139 - United States)
6
IRAP - Institut de recherche en astrophysique et planétologie (9 avenue Colonel Roche 31028 Toulouse - France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR5277 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- UT3 - Université Toulouse III - Paul Sabatier (118 route de Narbonne - 31062 Toulouse - France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
- OMP - Observatoire Midi-Pyrénées (14 avenue Edouard Belin, 31400 TOULOUSE - France)
- CNES - Centre National d'Études Spatiales [Toulouse] (18 avenue Edouard Belin 31401 Toulouse - France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
- CNRS - Centre National de la Recherche Scientifique : UAR 831 (France)
- IRD - Institut de Recherche pour le Développement (Siège Le Sextant 44, bd de Dunkerque CS 90009 13572 Marseille cedex 02 - France)
- Météo-France (73 avenue de Paris 94165 Saint-Mande Cedex - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5277 (France)
7
DTU - Technical University of Denmark [Lyngby] (Anker Engelunds Vej 1, Building 101A, 2800 Kgs. Lyngby - Denmark)
8
LLNL - Lawrence Livermore National Laboratory (7000 East Avenue • Livermore, CA 94550 - United States)
9
Department of Physics, Durham University (Durham DH1 3LE, UK - United Kingdom)
- Durham University (Stockton Road, Durham DH1 3LE - United Kingdom)
10
JPL - Jet Propulsion Laboratory (4800 Oak Grove Drive, Pasadena, CA 91109-8099, USA - United States)
- CALTECH - California Institute of Technology (1200 East California Blvd, Pasadena, California 91125 - United States)
- NASA (www.nasa.gov - United States)
11
ESO - European Southern Observatory (Karl-Schwarzchild Str. 2 D-85748 Garching bei Munchen - Germany)
12
GSFC - NASA Goddard Space Flight Center (Greenbelt, MD 20771 - United States)
Abstract : We present results from multi-wavelength simultaneous X-ray and radio observations of the black hole X-ray binary V404 Cyg in quiescence. Our coverage with NuSTAR provides the very first opportunity to study the X-ray spectrum of V404 Cyg at energies above 10 keV. The unabsorbed broad-band (0.3--30 keV) quiescent luminosity of the source is 8.9$\times$10$^{32}$ erg s$^{-1}$ for a distance of 2.4 kpc. The source shows clear variability on short time scales (an hour to a couple of hours) in radio, soft X-ray and hard X-ray bands in the form of multiple flares. The broad-band X-ray spectra obtained from XMM-Newton and NuSTAR can be characterized with a power-law model having photon index $\Gamma$=2.12$\pm$0.07 (90\% confidence errors); however, residuals at high energies indicate spectral curvature significant at a 3$\sigma$ confidence level with e-folding energy of the cutoff to be 20$^{+20}_{-7}$ keV. Such curvature can be explained using synchrotron emission from the base of a jet outflow. Radio observations using the VLA reveal that the spectral index evolves on very fast time-scales (as short as 10 min.), switching between optically thick and thin synchrotron emission, possibly due to instabilities in the compact jet or stochastic instabilities in accretion rate. We explore different scenarios to explain this very fast variability.
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Journal articles
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https://hal-insu.archives-ouvertes.fr/insu-01369644
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Submitted on : Tuesday, March 21, 2017 - 2:09:19 PM
Last modification on : Monday, May 16, 2022 - 8:20:23 AM
Long-term archiving on: : Thursday, June 22, 2017 - 1:02:04 PM
Contributor : Nathalie Pothier Connect in order to contact the contributor
Submitted on : Tuesday, March 21, 2017 - 2:09:19 PM
Last modification on : Monday, May 16, 2022 - 8:20:23 AM
Long-term archiving on: : Thursday, June 22, 2017 - 1:02:04 PM
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- HAL Id : insu-01369644, version 1
- ARXIV : 1507.04049
- DOI : 10.3847/0004-637X/821/2/103
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Citation
Vikram Rana, Alan Loh, Stéphane Corbel, John A. Tomsick, Deepto Chakrabarty, et al.. Characterizing X-ray and Radio emission in the Black Hole X-Ray Binary V404 Cygni during Quiescence. The Astrophysical Journal, American Astronomical Society, 2016, 821 (103), 16 p. ⟨10.3847/0004-637X/821/2/103⟩. ⟨insu-01369644⟩
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