A dataset provided by the European Space Agency

Name 055356
Title Luminous Supersoft X-ray Quasars
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0553560401
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0553560801
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0553561001
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0553561101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0553561201
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0553561401
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0553561501

DOI 10.5270/esa-0jfdk5o
Author Dr David Pooley
Description We will make short observations of 18 sources in a newly identified class of objects we call "supersoft X-ray quasars" (SXQs). These are high-luminosity quasars (Lx ~4x10^44 - 10^46 erg-s) with extremely soft (i.e., steep) spectra that were discovered during the ROSAT All-Sky Survey. The proposed XMM observations will more than double the number of such objects for which spectra are available. In addition, we will observe for 40 ks one SXQ with a power-law spectral index of ~7. Our objectives are (i) to characterize the spectra of SXQs over the full range of 0.2-10 keV, and (ii) to measure a multicomponent thermal disk spectrum. The latter will provide a direct handle on the black hole mass and spin.
Publication Exospheric solar wind charge exchange as seen by XMM-Newton . Carter, J. A., Semba, S., . AN . 333-313 . 2012 . 2012AN....333..313C ,
The cosmological analysis of X-ray cluster surveys - II. Application of the CR-HR method to the XMM archive . Clerc, N., Sadibekova, T., et all. . MNRAS . 423-3561 . 2012 . 2012MNRAS.423.3561C ,
An XMM-Newton Survey of the Soft X-Ray Background. II. An All-Sky Catalog of Diffuse O VII and O VIII Emission Intensities . Henley, David B., Shelton, Robin L., . ApJS . 202-14 . 2012 . 2012ApJS..202...14H ,
An XMM-Newton Survey of the Soft X-Ray Background. III. The Galactic Halo X-Ray Emission . Henley, David B., Shelton, Robin L., . ApJ . 773-92 . 2013 . 2013ApJ...773...92H ,
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
The Origin of the Hot Gas in the Galactic Halo: Testing Galactic Fountain Models. X-Ray Emission . Henley, David B., Shelton, Robin L., et all. . ApJ . 800-102 . 2015 . 2015ApJ...800..102H ,
XMM-Newton publication statistics . Ness, J.-U., Parmar, A. N., et all. . AN . 335-210 . 2014 . 2014AN....335..210N ,
The Interaction of the Fermi Bubbles with the Milky Way.s Hot Gas Halo . Miller, Matthew J., Bregman, Joel N., . ApJ . 829-9 . 2016 . 2016ApJ...829....9M...,
SPIDERS: the spectroscopic follow-up of X-ray selected clusters of galaxies in SDSS-IV . Clerc, N., Merloni, A., et all. . MNRAS . 463-4490 . 2016 . 2016MNRAS.463.4490C ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Dependence of the broad Fe Kalpha line on the physical parameters of AGN . Liu, Zhu, Yuan, Weimin, et all. . MNRAS . 463-684 . 2016 . 2016MNRAS.463..684L ,
The WISSH quasars project. VII. The impact of extreme radiative field in the accretion disc and X-ray corona interplay . Zappacosta, L., Piconcelli, E., et all. . A&A . 635-5 . 2020 . 2020A&A...635L...5Z ,
X-ray properties of the X-CLASS-redMaPPer galaxy cluster sample: the luminosity-temperature relation . Molham, Mona, Clerc, Nicolas, et all. . MNRAS . 494-161 . 2020 . 2020MNRAS.494..161M ,
A Comparison of X-Ray Photon Indices among the Narrow- and Broad-line Seyfert 1 Galaxies . Ojha, Vineet, Chand, Hum, et all. . ApJ . 896-95 . 2020 . 2020ApJ...896...95O ,
Multiwavelength classification of X-ray selected galaxy cluster candidates using convolutional neural networks . Kosiba, Matej, Lieu, Maggie, et all. . MNRAS . 496-4141 . 2020 . 2020MNRAS.496.4141K ,
SPIDERS: overview of the X-ray galaxy cluster follow-up and the final spectroscopic data release . Clerc, N., Kirkpatrick, C. C., et all. . MNRAS . 497-3976 . 2020 . 2020MNRAS.497.3976C ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2008-11-02T02:08:31Z/2009-04-29T07:25:23Z
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 2010-05-27T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2010-05-27T00:00:00Z, 055356, 17.56_20190403_1200. https://doi.org/10.5270/esa-0jfdk5o