USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS
We present a detailed study of the X-ray dust scattering halo of the black hole candidate Cygnus X-1 based on two Chandra High Energy Transmission Gratings Spectrometer observations. Using 18 different dust models, including one modified by us (eponymously dubbed XLNW), we probe the interstellar med...
| Principais autores: | , , , |
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| Outros Autores: | |
| Formato: | Artigo |
| Idioma: | en_US |
| Publicado em: |
IOP Publishing
2015
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| Acesso em linha: | http://hdl.handle.net/1721.1/95528 |
| _version_ | 1826205736363884544 |
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| author | Xiang, Jingen Lee, Julia C. Nowak, Michael A. Wilms, Jörn |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Xiang, Jingen Lee, Julia C. Nowak, Michael A. Wilms, Jörn |
| author_sort | Xiang, Jingen |
| collection | MIT |
| description | We present a detailed study of the X-ray dust scattering halo of the black hole candidate Cygnus X-1 based on two Chandra High Energy Transmission Gratings Spectrometer observations. Using 18 different dust models, including one modified by us (eponymously dubbed XLNW), we probe the interstellar medium between us and this source. A consistent description of the cloud properties along the line of sight (LOS) that describes at the same time the halo radial profile, the halo light curves, and the column density from source spectroscopy is best achieved with a small subset of these models. Combining the studies of the halo radial profile and the halo light curves, we favor a geometric distance to Cygnus X-1 of d = 1.81 ± 0.09 kpc. Our study also shows that there is a dense cloud, which contributes ~50% of the dust grains along the LOS to Cygnus X-1, located at ~1.6 kpc from us. The remainder of the dust along the LOS is close to the black hole binary. |
| first_indexed | 2024-09-23T13:17:47Z |
| format | Article |
| id | mit-1721.1/95528 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:17:47Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/955282022-09-28T13:14:22Z USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS Xiang, Jingen Lee, Julia C. Nowak, Michael A. Wilms, Jörn MIT Kavli Institute for Astrophysics and Space Research Nowak, Michael A. We present a detailed study of the X-ray dust scattering halo of the black hole candidate Cygnus X-1 based on two Chandra High Energy Transmission Gratings Spectrometer observations. Using 18 different dust models, including one modified by us (eponymously dubbed XLNW), we probe the interstellar medium between us and this source. A consistent description of the cloud properties along the line of sight (LOS) that describes at the same time the halo radial profile, the halo light curves, and the column density from source spectroscopy is best achieved with a small subset of these models. Combining the studies of the halo radial profile and the halo light curves, we favor a geometric distance to Cygnus X-1 of d = 1.81 ± 0.09 kpc. Our study also shows that there is a dense cloud, which contributes ~50% of the dust grains along the LOS to Cygnus X-1, located at ~1.6 kpc from us. The remainder of the dust along the LOS is close to the black hole binary. United States. National Aeronautics and Space Administration (Grant GO8-9036X) United States. National Aeronautics and Space Administration (SV3-73016) 2015-02-25T16:53:21Z 2015-02-25T16:53:21Z 2011-08 2011-02 Article http://purl.org/eprint/type/JournalArticle 0004-637X 1538-4357 http://hdl.handle.net/1721.1/95528 Xiang, Jingen, Julia C. Lee, Michael A. Nowak, and Jörn Wilms. “USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS.” The Astrophysical Journal 738, no. 1 (August 12, 2011): 78. © 2011 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-637x/738/1/78 Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing American Astronomical Society |
| spellingShingle | Xiang, Jingen Lee, Julia C. Nowak, Michael A. Wilms, Jörn USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS |
| title | USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS |
| title_full | USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS |
| title_fullStr | USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS |
| title_full_unstemmed | USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS |
| title_short | USING THE X-RAY DUST SCATTERING HALO OF CYGNUS X-1 TO DETERMINE DISTANCE AND DUST DISTRIBUTIONS |
| title_sort | using the x ray dust scattering halo of cygnus x 1 to determine distance and dust distributions |
| url | http://hdl.handle.net/1721.1/95528 |
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