| Proposal ID | 074449 |
| Title | Absorption variability in Mrk 915 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0744490401 |
| DOI | https://doi.org/10.5270/esa-o5g2kh1 |
| Principal Investigator, PI | Dr Lucia Ballo |
| Abstract | We aim at exploiting the high-quality X-ray spectroscopy and broad-band spectralcoverage of XMM and NuSTAR to reveal the physics, structure and location of theX-ray obscuring matter in Seyferts. We request a simultaneous monitoring withXMM and NuSTAR of Mrk915, a local, X-ray bright and obscured AGN where asignificant variation in the NH (Delta NH~10^23cm-2) has been revealed by shortexposure Swift data. We ask for a long observation (130ks) with XMM followed by2 shorter (50ks each) at a distance of about 4 and 10 days from the first one,combined with 3 observations with NuSTAR of 50ks each, to be performedsimultaneously to XMM. This will allow us to probe variability on timescalesfrom <2 days (in the 130ks observation) to 10 days, placing strong constraints on the absorber structure. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-12-02T13:08:13Z/2014-12-13T04:26:08Z |
| 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 | 2016-01-12T23:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "obscured agn", "nh delta nh", "quality xray spectroscopy", "xray bright", "absorption variability", "NuSTAR", "absorber structure", "XMM", "mrk 915", "xray obscuring matter", "probe variability" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Lucia Ballo, 2016, 'Absorption variability in Mrk 915', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-o5g2kh1 |