A dataset provided by the European Space Agency

Proposal ID 040524
Title Probing the intimate link between Accretion and BLR
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405240201
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405240901

DOI https://doi.org/10.5270/esa-rqr0se4
Principal Investigator, PI Dr Fabrizio Nicastro
Abstract We propose to observe with XMM-Newton a sample of 8 Sy2s with and without hiddenBLRs, extracted from the spectropolarimetric sample of Tran, for a totalexposure of 162 ks. (..) The main goal of this proposal is to measure the 2-10keV luminosity of these sources and so the accretion rate in Eddington units.This will in turn allow us to verify our low significance (3.2 sigma) findingsthat Sy2s with hidden BLRs all have accretion rate larger than a minimumthreshold value (..) and much larger than that of Sy2s without BLRs. (..) Thisclosely relates the existence of the BLR to the physical state of the centralengine in AGN. The proposed observations would allow us to test our hypothesisat a significance bigger than 10 sigma.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-08-06T00:40:02Z/2007-06-05T16:12:20Z
Version 17.56_20190403_1200
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 2008-06-22T00:00:00Z
Keywords "accretion rate", "kev luminosity", "low significance", "XMM", "spectropolarimetric sample", "sigma findings", "central engine", "significance bigger", "eddington units", "XMM-Newton", "intimate link", "total exposure", "accretion rate larger", "hidden blrs", "closely relates", "xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Fabrizio Nicastro, 2008, 'Probing the intimate link between Accretion and BLR', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rqr0se4