A dataset provided by the European Space Agency

Name 060619
Title Soft X-ray loud broad absorption-line quasars
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0606190201

DOI 10.5270/esa-kpp5x6e
Author Dr Kajal Ghosh
Description We have discovered three soft X-ray loud broad absorption-line quasars, based on the ROSAT data. The conundrum posed by this new class of AGN is how can a BAL region coexist with a powerful source of X-rays, since even a modest flux of X-rays will over-ionize the gas making it impossible to form Li-like atoms. We propose three short XMM-Newton observations of these three objects to determine their spectral nature (soft or hard) and to identify the possible origin of X-ray emissions.
Publication 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 Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton . Svoboda, J., Guainazzi, M., . A&A . 603-127 . 2017 . 2017A&A...603A.127S ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2009-11-18T22:56:33Z/2009-11-19T09:40:11Z
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 2011-02-06T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2011-02-06T00:00:00Z, 060619, 17.56_20190403_1200. https://doi.org/10.5270/esa-kpp5x6e