A Black Hole Nova Obscured by an Inner Disk Torus
| Autor: | Corral-Santana, J. M., Casares, J., Muñoz-Darias, T., Rodríguez-Gil, P., Shahbaz, T., Torres, M. A. P., Zurita, C., Tyndall, A. A. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Science, Vol. 339, No. 6123 on 1 March 2013 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1126/science.1228222 |
| Popis: | Stellar-mass black holes (BHs) are mostly found in X-ray transients, a subclass of X-ray binaries that exhibit violent outbursts. None of the 50 Galactic BHs known show eclipses, which is surprising for a random distribution of inclinations. Swift J1357.2-0933 is a very faint X-ray transient detected in 2011. On the basis of spectroscopic evidence, we show that it contains a BH in a 2.8 h orbital period. Further, high-time resolution optical light curves display profound dips without X-ray counterparts. The observed properties are best explained by the presence of an obscuring toroidal structure moving outwards in the inner disk seen at very high inclination. This observational feature should play a key role in models of inner accretion flows and jet collimation mechanisms in stellar-mass BHs. Comment: 23 pages (9 in the supplementary material), 6 figures (3 are supplementary figures). This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science on Vol. 339 no. 6123 on 1 March 2013 |
| Databáze: | arXiv |
| Externí odkaz: |
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