A dataset provided by the European Space Agency

Name 040455
Title What is the Physical nature of Kaz 102: an Enigmatic X-ray Hard Qadio Quiet QSO
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404550101

DOI 10.5270/esa-l6idnd4
Author Dr Takamitsu Miyaji
Description We propose to make a detailed broad-band X-ray spectroscopic study of the radio quiet QSO (RQQ) Kaz 102. This RQQ had a power-law spectrum with a photon index Gamma=1 with our ASCA observation. We also found a spectral variability over the timescale of years, from Gamma=2.2 during the ROSAT All Sky Survey to Gamma=1 during the Einstein-ASCA observations. From our ASCA spectra, we couldnt discriminate whether the apparently unusual hard spectrum was caused by warm absorber, Compton reflection, or a simple featureless power-law continuum. High quality spectroscopy with XMM-Newton is essential to unveil the physical nature of the enigmatic hardness and spectral variability of Kaz 102.
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Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-08-16T09:43:26Z/2006-08-16T17:03:44Z
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 2007-09-10T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-09-10T00:00:00Z, 040455, 17.56_20190403_1200. https://doi.org/10.5270/esa-l6idnd4