A dataset provided by the European Space Agency

Name 055475
Title Monitoring Sgr A* X-ray and Near-Infrared flaring activity
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0554750401
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0554750501
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0554750601

DOI 10.5270/esa-ctya52h
Author Dr Andrea Goldwurm
Description We propose to continue the monitoring of the flaring activity of the galactic supermassive black hole Sgr A*, with XMM-Newton and the VLT in order to detect a new brigth and long X-ray-Near-IR flare from this source that will allow us to: 1) Measure simultaneously the flare spectral shape in the X-ray and NIR bands and thus reveal the emission mechanisms and the accretion-ejection flows properties in the vicinity of the BH. 2) Confirm the presence of periodic X- ray modulations on timescales of 20-30 min, and measure the period and the light curve shape in order to explore the behavior of accreting matter at the very edge of the BH event horizon and possibly constrain the BH spin.
Publication Discovery of a Superluminal Fe K Echo at the Galactic Center: The Glorious Past of Sgr A* Preserved by Molecular Clouds . Ponti, G., Terrier, R., et all. . ApJ . 714-732 . 2010 . 2010ApJ...714..732P ,
Discovery of X-ray flaring activity in the Arches cluster . Capelli, R., Warwick, R. S., et all. . A&A . 525-2 . 2011 . 2011A&A...525L...2C ,
Concurrent X-ray, near-infrared, sub-millimeter, and GeV gamma-ray observations of Sagittarius A* . Trap, G., Goldwurm, A., et all. . A&A . 528-140 . 2011 . 2011A&A...528A.140T ,
Fe Kalpha line emission from the Arches cluster region - evidence for ongoing particle bombardment? . Capelli, R., Warwick, R. S., et all. . A&A . 530-38 . 2011 . 2011A&A...530A..38C ,
The X-ray lightcurve of Sagittarius A* over the past 150 years inferred from Fe-Kalpha line reverberation in Galactic centre molecular clouds . Capelli, R., Warwick, R. S., et all. . A&A . 545-35 . 2012 . 2012A&A...545A..35C ,
Nonthermal X-rays from low-energy cosmic rays: application to the 6.4 keV line emission from the Arches cluster region . Tatischeff, V., Decourchelle, A., . A&A . 546-88 . 2012 . 2012A&A...546A..88T ,
XMM-Newton observations of the Galactic Centre Region - I. The distribution of low-luminosity X-ray sources . Heard, V., Warwick, R. S., . MNRAS . 428-3462 . 2013 . 2013MNRAS.428.3462H ,
A Strongly Magnetized Pulsar within the Grasp of the Milky Way....
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2009-04-01T00:55:25Z/2009-04-05T13:09:09Z
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 2010-04-28T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2010-04-28T00:00:00Z, 055475, 17.56_20190403_1200. https://doi.org/10.5270/esa-ctya52h