A dataset provided by the European Space Agency

Name 013594
Title X-Ray spectroscopy Observations of Hard Broad-Line QSOs detected in the ASCA Lar


DOI https://doi.org/10.5270/esa-kq9ed0l
Author Dr Yoshihiro Uneda
Description We propose X-ray spectroscopic observations of broad-line (type-I) QSOs with hard X-ray spectra in a hard-band selected sample of the ASCA Large Sky Survey. The purpose is to study the origin of the hardness of their X-ray spectra to reveal the nature of this new polulation of sources, which could contribute significantly to the hard X-ray background instead of narrow-line (type-II) AGNs. This study is very important for understanding of the origin of the CXB, and for a test of the standard AGN synthesis models based on the unified scheme of the AGNs.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2002-07-10T00:07:00Z/2003-01-06T00:05:38Z
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 2004-02-06T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2004-02-06T00:00:00Z, 013594, 17.56_20190403_1200. https://doi.org/10.5270/esa-kq9ed0l