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Proposal ID 020240
Title XMM-NEWTON, RXTE, AND RADIO OBSERVATIONS OF CYGNUS X-1
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DOI https://doi.org/10.5270/esa-9y1jmdu
Principal Investigator, PI Dr JON MILLER
Abstract Cygnus X-1 is visible for 7 ksec of each revolution in April-May 2004. Werequest 70 ksec to acquire 10 consecutive exposures of Cygnus X-1 during thiswindow. We have an approved RXTE program for the sole purpose of observingsimultaneously with our proposed XMM-Newton program, and we will makesimultaneous radio observations with Ryle. We will constrain: the spin of theblack hole via Fe K-alpha line spectroscopy, the nature of the companion wind,the validity of ADAF models for Cygnus X-1, the role of the jet in producing thehard flux and in the larger reflection geometry, and how parameters depend onthe 5.6-day orbital period of Cygnus X-1.
Publications
Instrument EPN, OM, RGS1, RGS2
Temporal Coverage 2004-04-07T14:28:04Z/2004-10-08T05:47:04Z
Version 21.51_20241115_1113
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2006-10-14T00:00:00Z
Last Update 2026-07-09
Keywords "approved rxte program", "XMM-Newton", "larger reflection geometry", "parameters depend", "blackhole via fe", "orbital period", "XMM", "alpha line spectroscopy", "xmm newton program", "cygnus x", "companion wind", "adaf models", "hard flux", "xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr JON MILLER, 2006, 'XMM-NEWTON, RXTE, AND RADIO OBSERVATIONS OF CYGNUS X-1', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-9y1jmdu
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.