A dataset provided by the European Space Agency

Proposal ID 074404
Title Pinning Down the X-ray Reflection Component in the Changing-Look AGN
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0744040301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0744040401

DOI https://doi.org/10.5270/esa-u63htbi
Principal Investigator, PI Dr Franz Bauer
Abstract One of the first Swift-BAT AGN observed by {it NuSTAR} was the heavily-obscuredSy2 galaxy IC 751. Additional NuSTAR observations have shown that the objectsabsorption varies dramatically (~0.7-3.3e24 cm-2), such that IC 751 may be amore obscured version of the changing-look NGC 1365. IC 751s variablenature could portend the existence of a significant population of such objects.Notably, however, the IC 751 field has no useful 0.5-10 keV spectralconstraints, so we request a modest {it XMM- Newton} observation to characterizeIC 751, as well as two serendipitous NuSTAR-detected objects identified in thesame FOV. This 0.5-79 keV dataset will allow us to constrain the degree ofreflection and contamination present in IC 751, as well as secure NH constraints for the two serendipitous objects.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-11-28T13:20:42Z/2014-11-30T19:51:46Z
Version 21.51_20241115_1113
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 2015-12-23T23:00:00Z
Last Update 2026-07-09
Keywords "ic 751", "3e24 cm", "additional nustar", "secure nh constraints", "absorption varies", "changing look agn", "NuSTAR", "XMM", "NGC 1365", "79 kev dataset", "kev spectral constraints", "xray reflection component", "ic 751 field", "obscured version", "xmm newton", "swift bat agn"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Franz Bauer, 2015, 'Pinning Down the X-ray Reflection Component in the Changing-Look AGN', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-u63htbi
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.