A dataset provided by the European Space Agency

Name 076417
Title Ton S 180 : Probe of the X-ray reprocessing and the 'very high state. of AGN


DOI https://doi.org/10.5270/esa-hots0s9
Author Prof Ian McHardy
Description We propose a 130ks observation of the NLS1 TonS180 - which has one of the
strongest soft X-ray excesses, implying strong reprocessing, but no previous
long XMM observation - to determine whether, contrary to previous CCF results,
it shows the negative high frequency spectral lags expected from such a source.
We will model the lags to measure BH spin (ie inner disc radius) and thus
confirm or deny blurred disc reprocessing models for the soft excess and the
also the high spin explanation for NLS1s. We also determine BH mass, which is
presently poorly known. From the PSD we will determine whether TonS is only the
second very high state AGN known and, using its very high accretion rate, test
M/mdot/timescale scaling relationships for AGN.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2015-07-03T22:09:10Z/2015-07-05T13:24:10Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2016-07-27T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Ian McHardy, 2016, 076417, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-hots0s9