A dataset provided by the European Space Agency

Name 050540
Title The remarkable variability and X-ray spectrum of the narrow-line quasar PHL 1092


DOI 10.5270/esa-85okeve
Author Dr Giovanni Miniutti
Description PHL~1092 is known for its extreme X-ray variability observed by previous X--ray missions (see results from the ROSAT monitoring of the source by Brandt et al 1999). The fast and large amplitude variability is common in narrow--line type objects but rather unusual given the quasar--type luminosity of the source (about 10^{45} erg-s in the 0.4--10 keV rest--frame). The flux variability is also associated with complex spectral variability revealed (but poorly understood) from previous relatively short XMM--Newton observations. We propose to observe PHL~1092 with XMM--Newton to investigate in great detail the nature of the spectral complexity and of the extreme X--ray
Publication PHL 1092 as a transient extreme X-ray weak quasar . Miniutti, G., Fabian, A. C., et all. . MNRAS . 396-85 . 2009 . 2009MNRAS.396L..85M ,
An All-Sky Atlas of Radio-X-ray Associations . Flesch, E., . PASA . 27-283 . 2010 . 2010PASA...27..283F ,
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 ,
Insights on the X-ray weak quasar phenomenon from XMM-Newton monitoring of PHL 1092 . Miniutti, G., Brandt, W. N., et all. . MNRAS . 425-1718 . 2012 . 2012MNRAS.425.1718M ,
Classification of X-Ray Sources in the XMM-Newton Serendipitous Source Catalog . Lin, Dacheng, Webb, Natalie A., . ApJ . 756-27 . 2012 . 2012ApJ...756...27L ,
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 ,
Automatic Classification of Time-variable X-Ray Sources . Lo, Kitty K., Farrell, Sean, et all. . ApJ . 786-20 . 2014 . 2014ApJ...786...20L ,
The diversity of quasars unified by accretion and ori...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2008-01-20T02:26:48Z/2008-01-20T20:15:34Z
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 2009-02-13T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2009-02-13T00:00:00Z, 050540, 17.56_20190403_1200. https://doi.org/10.5270/esa-85okeve