OJ287: a binary black hole system
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2008
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| _version_ | 1876435467306532864 |
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| author | M. J. Valtonen |
| author_facet | M. J. Valtonen |
| contents | OJ287: a binary black hole system M. J. Valtonen Física, Astronomía y Matemáticas Quasars: general quasars: individual (OJ287) We derive new solutions for the binary black hole model of OJ287, using the November 2005 outburst as oneof the fixed points. Previous models have used the September 1994 outburst which is in many ways ill-defined,and leads to considerable uncertainty in the orbit. The parameters of the system to be determined are theorbital period, fixed by the separation of the 1947.30 and 1983.00 outbursts, the orientation of the majoraxis of the orbit at a given time, fixed by the 1972.97 outburst, the time delay factor which is a function of the disk thickness, fixed by the 2005.76 outburst, and the precession rate of the binary, fixed by the 1913.00 outburst. A unique solution is found for the case of gravitational radiation and of no gravitational radiation.The 2007 September outburst begins 2007.70 (September 13, + or - a few days) in the former model, and atthe beginning of October in the latter model. The three weeks difference will be easily resolved in observations,and thus the emission of gravitational radiation can be indirectly measured. X-ray observations support the idea that the 2005 outburst is related to an impact of a secondary black hole on the accretion disk of a massiveprimary. 2008 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57103208 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.32 |
| format | Artículo científico |
| id | redalyc_57103208 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | OJ287: a binary black hole system M. J. Valtonen Física, Astronomía y Matemáticas Quasars: general quasars: individual (OJ287) OJ287: a binary black hole system M. J. Valtonen Física, Astronomía y Matemáticas Quasars: general quasars: individual (OJ287) We derive new solutions for the binary black hole model of OJ287, using the November 2005 outburst as oneof the fixed points. Previous models have used the September 1994 outburst which is in many ways ill-defined,and leads to considerable uncertainty in the orbit. The parameters of the system to be determined are theorbital period, fixed by the separation of the 1947.30 and 1983.00 outbursts, the orientation of the majoraxis of the orbit at a given time, fixed by the 1972.97 outburst, the time delay factor which is a function of the disk thickness, fixed by the 2005.76 outburst, and the precession rate of the binary, fixed by the 1913.00 outburst. A unique solution is found for the case of gravitational radiation and of no gravitational radiation.The 2007 September outburst begins 2007.70 (September 13, + or - a few days) in the former model, and atthe beginning of October in the latter model. The three weeks difference will be easily resolved in observations,and thus the emission of gravitational radiation can be indirectly measured. X-ray observations support the idea that the 2005 outburst is related to an impact of a secondary black hole on the accretion disk of a massiveprimary. 2008 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57103208 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.32 |
| title | OJ287: a binary black hole system |
| topic | Física, Astronomía y Matemáticas Quasars: general quasars: individual (OJ287) |
| url | https://www.redalyc.org/articulo.oa?id=57103208 |