A dataset provided by the European Space Agency

Proposal ID 014634
Title X-ray and HI absorption in powerful Radio Galaxies
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0146340501
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0146340601

DOI https://doi.org/10.5270/esa-yfbvw2c
Principal Investigator, PI Dr Marco Salvati
Abstract VLBI observations of radio galaxies can provide valuable information about the putative obscuring torus around the central AGN of these sources. Inparticular, the amount of obscuring material can be evaluated from the HIand free-free absorption, and compared with the X-ray measurement. We propose toobserve a small sample of radiogalaxies with radio data indicating heavy absorption by parsec-scalematerial. A measurement of the N _H and the luminosity in the X rays will giveenough data to constrain the physical parameters (dimensions, temperature,metallicity, molecular content) of the torus. These sources are candidateCompton thick radio galaxies (a very rare class of objects).
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-03-22T19:45:47Z/2003-04-16T22:42:47Z
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 2004-05-10T00:00:00Z
Keywords "rare class", "molecular content", "free free absorption", "radio data", "hi absorption", "obscuring torus", "obscuring material", "x ray", "valuable information", "powerful radiogalaxy", "physical parameters dimensions", "xray measurement", "heavy absorption", "central agn", "parsec scale material"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Marco Salvati, 2004, 'X-ray and HI absorption in powerful Radio Galaxies', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-yfbvw2c