A dataset provided by the European Space Agency

Name 030115
Title Probing the intimate link between accretion and the Broad Line Region


DOI https://doi.org/10.5270/esa-2m8pgg2
Author European Space Agency
Description We propose to observe with XMM-Newton a sample of 12 Sy2s with and without
hidden BLRs, extracted from the spectropolarimetric sample of Tran, for a total
exposure of 203 ks. The main goal of this proposal is to measure the 2-10 keV
luminosity of these sources and so the accretion rate in Eddington units. This
will in turn allow us to verify our recent, low significance (3.2 sigma)
findings that Sy2s with hidden BLRs have all accretion rate larger than a
minimum threshold value and much larger than that of Sy2s without BLRs. This
closely relates the existence of the BLRs to the physical state of the central
engine in AGNs. The new observations will more than double the existing sample
and will allow us to test our hypothesis at a significance bigger than 10 sigma.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2005-05-09T10:45:08Z/2006-04-22T04:51:29Z
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 2008-08-29T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008, Probing The Intimate Link Between Accretion And The Broad Line Region, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-2m8pgg2