Journal articles
GRS 1739-278 observed at very low luminosity with XMM-Newton and NuSTAR
F. Fürst
1
J. A. Tomsick
2
K. Yamaoka
3
T. Dauser
4
J. M. Miller
5
M. Clavel
2
Stéphane Corbel
6, 7
A. C. Fabian
8
J. García
9
F. A. Harrison
1
A. Loh
6
P. Kaaret
10
E. Kalemci
11
S. Migliari
12
J. C. A. Miller-Jones
13
K. Pottschmidt
14
F. Rahoui
15
J. Rodriguez
6
D. Stern
16
M. Stuhlinger
12
D. J. Walton
1, 16
J. Wilms
4
D. J. Walton 1, 16
Author
J. Wilms 4
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
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)
3
SolarTerrestrial Environment Laboratory (Japan)
- Nagoya University (1 Furocho, Chikusa Ward, Nagoya, Aichi Prefecture 464-0814, Japon - Japan)
4
Dr. Karl-Remeis-Sternwarte (Astronomical Institute of the FAU, Sternwartstr. 7, 96049 Bamberg - Germany)
- ECAP - Erlangen Centre for Astroparticle Physics (Friedrich-Alexander-Universität Erlangen-Nürnberg, Erwin-Rommel-Str. 1
D-91058 Erlangen - Germany)
- FAU - Friedrich-Alexander Universität Erlangen-Nürnberg (Schlossplatz 4, 91054 Erlangen, Germany - Germany)
5
Department of Astronomy, University of Michigan (United States)
- University of Michigan [Ann Arbor] (500 Church Street Ann Arbor, MI 48109-1090 - United States)
- University of Michigan System (Michigan - United States)
6
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)
7
USN - Unité Scientifique de la Station de Nançay (18330 NANCAY - France)
- UO - Université d'Orléans : USR 704 (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - 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 : UMS3116 (France)
- INSU - CNRS - Institut national des sciences de l'Univers : USR 704 (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)
- CNRS - Centre National de la Recherche Scientifique : USR 704 (France)
8
Institute of Astronomy [Cambridge] ( Madingley Rd, Cambridge CB3 0HA - United Kingdom)
- CAM - University of Cambridge [UK] (The Old Schools, Trinity Lane, Cambridge CB2 1TN - United Kingdom)
9
CfA - Harvard-Smithsonian Center for Astrophysics (60 Garden Street, Cambridge, MA 02138, USA - United States)
- Smithsonian Institution (PO Box 37012, Washington, DC 20013-7012 - United States)
- Harvard University [Cambridge] (Massachusetts Hall, Cambridge, MA 02138 - United States)
10
Department of Physics and Astronomy, University of Iowa (United States)
- University of Iowa [Iowa City] (Iowa City, IA 52242 - United States)
11
Sabanci University - Faculty of Engineering and Natural Sciences (Tuzla İstanbul 34956 - Turkey)
- Sabanci University [Istanbul] ( Sabancı University. Orta Mahalle, Tuzla 34956 İstanbul - Turkey)
12
ESAC - European Space Astronomy Centre (Camino bajo del Castillo, s/n, Urbanización Villafranca del Castillo,, Villanueva de la Cañada, E-28692 Madrid
- Spain)
- ESA - European Space Agency (France)
13
International Centre for Radio Astronomy Research - Curtin University, (Australia)
- Curtin University [Perth] (GPO Box U1987, Perth WA 6845 - Australia)
- PATREC - Planning and Transport Research Centre (University of western Australia - Australia)
14
GSFC - NASA Goddard Space Flight Center (Greenbelt, MD 20771 - United States)
15
ESO - European Southern Observatory (Karl-Schwarzchild Str. 2 D-85748 Garching bei Munchen - Germany)
16
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)
Abstract : We present a detailed spectral analysis of XMM-Newton and NuSTAR observations of the accreting transient black hole GRS 1739-278 during a very faint low hard state at ~0.02% of the Eddington luminosity (for a distance of 8.5 kpc and a mass of 10 M_sun ). The broad-band X-ray spectrum between 0.5-60 keV can be well-described by a power law continuum with an exponential cutoff. The continuum is unusually hard for such a low luminosity, with a photon index of Gamma = 1.39 +/- 0.04. We find evidence for an additional reflection component from an optically thick accretion disk at the 98% likelihood level. The reflection fraction is low with R_refl = 0.043(+0.033,-0.023). In combination with measurements of the spin and inclination parameters made with NuSTAR during a brighter hard state by Miller and co-workers, we seek to constrain the accretion disk geometry. Depending on the assumed emissivity profile of the accretion disk, we find a truncation radius of 15-35 Rg (5-12 R_ISCO ) at the 90% confidence limit. These values depend strongly on the assumptions and we discuss possible systematic uncertainties.
Document type :
Journal articles
Complete list of metadatas
https://hal-insu.archives-ouvertes.fr/insu-01432858
Contributor : Nathalie Pothier <>
Submitted on : Friday, March 17, 2017 - 2:24:28 PM
Last modification on : Wednesday, September 23, 2020 - 4:38:11 AM
Long-term archiving on: : Sunday, June 18, 2017 - 1:19:06 PM
Contributor : Nathalie Pothier <>
Submitted on : Friday, March 17, 2017 - 2:24:28 PM
Last modification on : Wednesday, September 23, 2020 - 4:38:11 AM
Long-term archiving on: : Sunday, June 18, 2017 - 1:19:06 PM
File
Fürst_2016_ApJ_832_115.pdf
Publisher files allowed on an open archive
Identifiers
- HAL Id : insu-01432858, version 1
- ARXIV : 1609.07530
- DOI : 10.3847/0004-637X/832/2/115
Collections
INSU | OSUC | UNIV-ORLEANS | USN | CNRS | UNIV-PARIS7 | OBSPM | DSM-IRFU | IRFU-AIM | CEA | USPC | CEA-DRF | UP-SCIENCES | PSL
Citation
F. Fürst, J. A. Tomsick, K. Yamaoka, T. Dauser, J. M. Miller, et al.. GRS 1739-278 observed at very low luminosity with XMM-Newton and NuSTAR. The Astrophysical Journal, American Astronomical Society, 2016, 832 (2), pp.115. ⟨10.3847/0004-637X/832/2/115⟩. ⟨insu-01432858⟩