The 590 Day Long-Term Periodicity of the Microquasar GRS 1915+105

Autor: Jochen Greiner, M. L. McCollough, Arne Rau
Rok vydání: 2003
Předmět:
Zdroj: The Astrophysical Journal. 590:L37-L40
ISSN: 1538-4357
0004-637X
DOI: 10.1086/376683
Popis: We report on the discovery of a 590 days long term periodicity in the hard X-ray component of the microquasar \grs found from a comprehensive study of more than four years of {\it RXTE} observations. The periodicity is also observed in the hard X-ray flux observed by BATSE, and in the radio flux as seen with the {\it Green Bank Interferometer} and the {\it Ryle Telescope}. We discuss various possible explanations, including the precession of a radiation induced warped accretion disk.
Comment: 6 pages, 4 figuers, accepted for publication as ApJ Letter
Databáze: OpenAIRE