The X-ray quiescence of Swift J195509.6+261406 (GRB 070610): an optical bursting X-ray binary?
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Título: | The X-ray quiescence of Swift J195509.6+261406 (GRB 070610): an optical bursting X-ray binary? |
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Autor/es: | Rea, Nanda | Jonker, Peter G. | Nelemans, Gijs | Pons, José A. | Kasliwal, Mansi M. | Kulkarni, Shrinivas R. | Wijnands, Rudy |
Grupo/s de investigación o GITE: | Astrofísica Relativista |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | Stars: magnetic field | X-rays: individual (SWIFT J195509.6+261406) | X-rays: stars |
Área/s de conocimiento: | Astronomía y Astrofísica |
Fecha de publicación: | 15-feb-2011 |
Editor: | IOP Publishing |
Cita bibliográfica: | The Astrophysical Journal Letters. 2011, 729(2): L21. doi:10.1088/2041-8205/729/2/L21 |
Resumen: | We report on an ~63 ks Chandra observation of the X-ray transient Swift J195509.6+261406 discovered as the afterglow of what was first believed to be a long-duration gamma-ray burst (GRB 070610). The outburst of this source was characterized by unique optical flares on timescales of second or less, morphologically similar to the short X-ray bursts usually observed from magnetars. Our Chandra observation was performed ~2 years after the discovery of the optical and X-ray flaring activity of this source, catching it in its quiescent state. We derive stringent upper limits on the quiescent emission of Swift J195509.6+261406, which argues against the possibility of this object being a typical magnetar. Our limits show that the most viable interpretation on the nature of this peculiar bursting source is a binary system hosting a black hole or a neutron star with a low-mass companion star (<0.12 M ☉) and with an orbital period smaller than a few hours. |
Patrocinador/es: | N.R. is supported by a Ramón y Cajal fellowship through Consejo Superior de Investigaciones Científicas, by grants AYA2009-07391 and SGR2009-811. P.G.J. and G.N. acknowledge support from a VIDI grant from the Netherlands Organization for Scientific Research. |
URI: | http://hdl.handle.net/10045/33855 |
ISSN: | 2041-8205 (Print) | 2041-8213 (Online) |
DOI: | 10.1088/2041-8205/729/2/L21 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2011. The American Astronomical Society |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1088/2041-8205/729/2/L21 |
Aparece en las colecciones: | INV - Astrofísica Relativista - Artículos de Revistas |
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2011_Rea_etal_AJL.pdf | 260,72 kB | Adobe PDF | Abrir Vista previa | |
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