| Proposal ID | 078252 |
| Title | Mapping the X-ray reprocessor in NGC 3227 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0782520201 |
| DOI | https://doi.org/10.5270/esa-ldat2pa |
| Principal Investigator, PI | Dr Tracey Turner |
| Abstract | NGC 3227 has it all: rapid X-ray variability, a negative lag, variable Fe Kemission and variable absorption. However, no observing campaign to date hasbeen constructed to optimally use the timing and spectroscopic signatures of thereprocessor together to map the X-ray gas. We propose to combine 320 ks on XMMand 160 ks on Nustar to isolate reverberation signatures from the circumnucleargas. Our proposed methodology will allow us to measure directly in the lightcurve the actual reverberation delay, the timescale of the delay and the shapeof the transfer function, which give an unambiguous model independentconstraints on the reverberating gas. This gas is key to understanding theaccretion process and the co-evolution of galaxies and their nuclear black holes. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2016-11-09T12:51:03Z/2016-12-10T09:49:49Z |
| 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 | 2018-01-03T23:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "", "reverberating gas", "isolate reverberation signatures", "transfer function "", "XMM", "negative lag", "nuclear black holes", "co evolution", "spectroscopic signatures", "xray gas", "xray reprocessor", "actual reverberation delay", "accretion process", "variable fe", "unambiguous model", "ngc 3227", "variable absorption", "NGC 3227", "rapid xray variability", "combine 320", "light curve", "circumnuclear gas" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Tracey Turner, 2018, 'Mapping the X-ray reprocessor in NGC 3227', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-ldat2pa |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |