| Proposal ID | 040455 |
| Title | What is the Physical nature of Kaz 102: an Enigmatic X-ray Hard Qadio Quiet QSO |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404550101 |
| DOI | https://doi.org/10.5270/esa-l6idnd4 |
| Principal Investigator, PI | Dr Takamitsu Miyaji |
| Abstract | We propose to make a detailed broad-band X-ray spectroscopic study of the radioquiet QSO (RQQ) Kaz 102. This RQQ had a power-law spectrum with a photon indexGamma=1 with our ASCA observation. We also found a spectral variability over thetimescale of years, from Gamma=2.2 during the ROSAT All Sky Survey to Gamma=1during the Einstein/ASCA observations. From our ASCA spectra, we couldntdiscriminate whether the apparently unusual hard spectrum was caused by warmabsorber, Compton reflection, or a simple featureless power-law continuum. Highquality spectroscopy with XMM-Newton is essential to unveil the physical natureof the enigmatic hardness and spectral variability of Kaz 102. |
| Publications |
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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 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 | 2007-09-10T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "couldnt discriminate", "asca spectra", "quality spectroscopy", "xmm newton", "kaz 102", "warm absorber", "photon index gamma", "XMM-Newton", "spectral variability", "power law spectrum", "ROSAT", "enigmatic hardness", "compton reflection", "XMM", "hard spectrum", "sky survey" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Takamitsu Miyaji, 2007, 'What is the Physical nature of Kaz 102: an Enigmatic X-ray Hard Qadio Quiet QSO', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-l6idnd4 |