A dataset provided by the European Space Agency

Name: The Remarkably Cool X-ray Spectrum of the QSO, 1H 0419-577
Published: 2019-12-04T23:00:00Z

Proposal ID	082036
Title	The Remarkably Cool X-ray Spectrum of the QSO, 1H 0419-577
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0820360101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0820360201
DOI	https://doi.org/10.5270/esa-2i0rdgy
Principal Investigator, PI	Dr James Reeves
Abstract	The origin of the hard X-ray excess and coronal emission are key to ourunderstanding of AGN. The nearby (z=0.104) luminous QSO, 1H0419-577 shows one of the strongest hard excesses and one of the most extreme high energy cut-offs observed to date from any AGN. If its origin is due to thermal Comptonization, then this implies a remarkably low corona temperature of kT=14keV. Here we propose simultaneous 3x50ks XMM-Newton and NuSTAR observations of 1H0419-577 to understand both the nature and variability of the corona and its response to the illuminating continuum. This will reveal the true form of the X-rays produced from close to the central black hole.
Publications	A Systematic Study of the Short-term X-Ray Variability of Seyfert Galaxies. I. Diversity of the X-Ray rms Spectra \|Hu Jingwei Jin Chichuan et al. \| ApJ \| 936-105 \| 2022 \| 2022ApJ...936..105H \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...936..105H Survey of Bare Active Galactic Nuclei in the Local Universe (z < 0.2). I. On the Origin of Soft Excess \|Nandi Prantik Chatterjee Arka et al. \| ApJS \| 269-15 \| 2023 \| 2023ApJS..269...15N \| http://ui.adsabs.harvard.edu/#abs/2023ApJS..269...15N Discovery of the Goat Horn complex: a u223c1000 deg² diffuse X-ray source connected to radio loop XII \|Locatelli Nicola Ponti Gabriele et al. \| A&A \| 688-A85 \| 2024 \| 2024A&A...688A..85L \| http://ui.adsabs.harvard.edu/#abs/2024A&A...688A..85L
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2018-05-16T08:33:13Z/2018-11-14T12:10:13Z
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	2019-12-04T23:00:00Z
Last Update	2025-08-04
Keywords	"XMM", "low corona temperature", "energy cut offs", "XMM-Newton", "NuSTAR", "1h0419 577", "central black hole", "strongest hard excesses", "1h 0419 577", "cool xray spectrum", "thermal comptonization", "illuminating continuum", "coronal emission", "3x50 xmm newton", "hard xray excess", "104 luminous qso", "nearby z"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr James Reeves, 2019, 'The Remarkably Cool X-ray Spectrum of the QSO, 1H 0419-577', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-2i0rdgy