A dataset provided by the European Space Agency

Proposal ID 040266
Title XMM monitoring of the Seyfert Galaxy NGC 4151: Probing the Disk-Wind Connection
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0402660201
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DOI https://doi.org/10.5270/esa-h79ziov
Principal Investigator, PI Prof Steven Kraemer
Abstract Recent X-ray observations of NGC 4151 have revealed dramatic changes in theX-ray absorption due to bulk motion of the gas across our line-of-sight. Basedon photoionization models, much of this component must lie within 0.1 pc of thecentral source, which, combined with the large transverse velocity, suggeststhat the absorber arises in a disk-driven wind, making NGC 4151 the only Seyfert1 to have shown direct evidence of this phenomenon. We propose a series of 4 newXMM-Newton observations of NGC 4151, of 40 ksec each, to fully constrain thekinematics, location, and physical conditions of the high-column X-ray aborber,and probe the relative effects of radiation driving, thermal pressure, andmagnetocentrifugal forces in accelerating the gas.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-05-16T06:21:42Z/2006-11-30T11:02:58Z
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 2008-01-25T00:00:00Z
Keywords "NGC 4151", "thermal pressure", "magnetocentrifugal forces", "XMM", "column xray aborber", "physical conditions", "disk driven wind", "photoionization models", "bulk motion", "xmm newton", "radiation driving", "xray absorption", "disk wind connection", "XMM-Newton", "relative effects", "transverse velocity", "central source", "ngc 4151"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Steven Kraemer, 2008, 'XMM monitoring of the Seyfert Galaxy NGC 4151: Probing the Disk-Wind Connection', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-h79ziov