A dataset provided by the European Space Agency

Name 074259
Title Sampling ULX spectral states with XMM Newton and NuSTAR


DOI https://doi.org/10.5270/esa-wptxzd2
Author Dr Matteo Bachetti
Description Recently our understanding of Ultraluminous X-ray Sources (ULX) has advanced significantly due to broad band spectro-temporal studies with XMM Newton, Suzaku and NuSTAR. Evidence now suggests that many ULXs with LX 1040ergs 1 are powered by super-Eddington accretion onto black holes with masses up to 100 Mo. This extreme accretion regime remains poorly understood. Observations show that ULXs are variable on timescales of weeks and exhibit distinct spectral states characterized by multiple components in the 0.3 30 keV band. To understand these components we propose to trigger a NuSTAR and XMM Newton observation of one of the bright ULXs in our sample in a different spectral state than previously observed.
Publication No observations found associated with the current proposal
Instrument EPN, RGS1, OM, RGS2, EMOS1, EMOS2
Temporal Coverage 2014-07-05T22:37:13Z/2014-07-06T16:07:12Z
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 2015-07-17T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2015-07-17T22:00:00Z, 074259, 17.56_20190403_1200. https://doi.org/10.5270/esa-wptxzd2