A dataset provided by the European Space Agency

Name 001474
Title XMM Observations of the Hardest ASCA Sources


DOI https://doi.org/10.5270/esa-9x59d8s
Author Dr Roberto Della Ceca
Description We propose XMM observations of 4 X-ray (2-10 keV) selected sources with a very
hard spectra. The proposed objects are probably the brightest and most extreme
examples of a population of sources that is showing up at faint fluxes and
thus ideal targets for a detailed study with XMM. They could represent a new
population of very hard serendipitous sources or, alternatively, a population of
very absorbed sources as expected from the CXB synthesis models based on the AGN
Unification Scheme. Combining these data with those of 4 other objects, which
are contained in XMM GTO fields, we should be able to assemble a small, but
statistically complete, sample. This sample will have a fundamental and crucial
importance to test our understanding of the CXB and the AGN Unification Scheme.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2002-09-08T00:29:22Z/2002-09-08T08:30:49Z
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 2003-10-12T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Roberto Della Ceca, 2003, 001474, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-9x59d8s