A dataset provided by the European Space Agency

Name 040243
Title Coordinated XMM-Newton and HST monitoring of SgrA*


DOI https://doi.org/10.5270/esa-ulwawwg
Author Dr Delphine Porquet
Description We propose to carry out further monitoring of the central supermassive black hole in Sgr A* in X-rays and the near-IR with simultaneous XMM-Newton and HST observations. Our goal is to determine the physical mechanisms governing the accretion onto a supermassive black hole when the accretion luminosity is at an extremely low level. X-ray flares are very likely to be produced within 10 Schwarzschild radii and hence probe the environment very close to the black hole. By investigating the correlation of X-ray and near-IR light curves for flares of different luminosities and broad-band spectral characteristics we hope to test whether current synchrotron-inverse Compton models for the flare production are valid.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2007-03-30T21:05:17Z/2007-04-04T19:54:54Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2008-07-01T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008-07-01T00:00:00Z, 040243, 17.56_20190403_1200. https://doi.org/10.5270/esa-ulwawwg