The Ionized Stellar Wind in Vela X-1 during Eclipse
We present a first analysis of a high-resolution X-ray spectrum of the ionized stellar wind of Vela X-1 during eclipse. The data were obtained with the High-Energy Transmission Grating Spectrometer on board the Chandra X-Ray Observatory. The spectrum is resolved into emission lines with fluxes betwe...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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IOP Publishing
2013
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| Online Access: | http://hdl.handle.net/1721.1/76205 https://orcid.org/0000-0002-5769-8441 |
| _version_ | 1826207101845766144 |
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| author | Schulz, Norbert S. Canizares, Claude R. Sako, Masao Lee, J. |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Schulz, Norbert S. Canizares, Claude R. Sako, Masao Lee, J. |
| author_sort | Schulz, Norbert S. |
| collection | MIT |
| description | We present a first analysis of a high-resolution X-ray spectrum of the ionized stellar wind of Vela X-1 during eclipse. The data were obtained with the High-Energy Transmission Grating Spectrometer on board the Chandra X-Ray Observatory. The spectrum is resolved into emission lines with fluxes between 0.02 and 1.04 × 10[superscript -4] photons cm[superscript -2] s[superscript -1]. We identify lines from a variety of charge states, including fluorescent lines from cold material and a warm photoionized wind. We can exclude signatures from collisionally ionized plasmas. For the first time, we identify fluorescent lines from L-shell ions from lower Z elements. We also detect radiative recombination continua from a kT = 10 eV (1.2 × 10[superscript 5] K) photoionized optically thin gas. The fluorescent line fluxes imly the existence of optically thick and clumped matter within or outside the warm photoionized plasma. |
| first_indexed | 2024-09-23T13:44:09Z |
| format | Article |
| id | mit-1721.1/76205 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:44:09Z |
| publishDate | 2013 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/762052022-10-01T16:47:45Z The Ionized Stellar Wind in Vela X-1 during Eclipse Schulz, Norbert S. Canizares, Claude R. Sako, Masao Lee, J. MIT Kavli Institute for Astrophysics and Space Research Canizares, Claude R. Schulz, Norbert S. Canizares, Claude R. Lee, Julia C. We present a first analysis of a high-resolution X-ray spectrum of the ionized stellar wind of Vela X-1 during eclipse. The data were obtained with the High-Energy Transmission Grating Spectrometer on board the Chandra X-Ray Observatory. The spectrum is resolved into emission lines with fluxes between 0.02 and 1.04 × 10[superscript -4] photons cm[superscript -2] s[superscript -1]. We identify lines from a variety of charge states, including fluorescent lines from cold material and a warm photoionized wind. We can exclude signatures from collisionally ionized plasmas. For the first time, we identify fluorescent lines from L-shell ions from lower Z elements. We also detect radiative recombination continua from a kT = 10 eV (1.2 × 10[superscript 5] K) photoionized optically thin gas. The fluorescent line fluxes imly the existence of optically thick and clumped matter within or outside the warm photoionized plasma. Smithsonian Astrophysical Observatory (SV1-61010) United States. National Aeronautics and Space Administration (Contract NAS 8-39073) 2013-01-08T18:04:33Z 2013-01-08T18:04:33Z 2001-12 2001-09 Article http://purl.org/eprint/type/JournalArticle 2041-8205 2041-8213 http://hdl.handle.net/1721.1/76205 Schulz, Norbert S. et al. “The Ionized Stellar Wind in Vela X-1 During Eclipse.” The Astrophysical Journal 564.1 (2002): L21–L25. https://orcid.org/0000-0002-5769-8441 en_US http://dx.doi.org/ 10.1086/338862 Astrophysical Journal. Letters 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 arXiv link from Prof. Canizares |
| spellingShingle | Schulz, Norbert S. Canizares, Claude R. Sako, Masao Lee, J. The Ionized Stellar Wind in Vela X-1 during Eclipse |
| title | The Ionized Stellar Wind in Vela X-1 during Eclipse |
| title_full | The Ionized Stellar Wind in Vela X-1 during Eclipse |
| title_fullStr | The Ionized Stellar Wind in Vela X-1 during Eclipse |
| title_full_unstemmed | The Ionized Stellar Wind in Vela X-1 during Eclipse |
| title_short | The Ionized Stellar Wind in Vela X-1 during Eclipse |
| title_sort | ionized stellar wind in vela x 1 during eclipse |
| url | http://hdl.handle.net/1721.1/76205 https://orcid.org/0000-0002-5769-8441 |
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