A dataset provided by the European Space Agency

Name 072421
Title Monitoring the close encounter between a small cloud and a supermassive BH
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0724210201
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0724210501

DOI 10.5270/esa-wbpoh3o
Author Dr Gabriele Ponti
Description Earlier this year a gas cloud was discovered to be falling (accelerating) towards SgrA* and it is predicted to reach peribothron (at 2200 rS) in September 2013. At a minimum, the cloud-SgrA* interaction is expected to induce enhanced emission varying on timescales of months-years. However, the cloud physics and SgrA*.s close environment are not well understood. We propose 4*50ks XMM observations to study the near-future evolution of the cloud. Its emission properties will be a sensitive probe of the characteristics of the accretion flow onto the supermassive Galactic BH, at milli-parsec scales.
Publication A Strongly Magnetized Pulsar within the Grasp of the Milky Way.s Supermassive Black Hole . Rea, N., Esposito, P., et all. . ApJ . 775-34 . 2013 . 2013ApJ...775L..34R ,
Variation of the X-ray non-thermal emission in the Arches cloud . Clavel, M., Soldi, S., et all. . MNRAS . 443-129 . 2014 . 2014MNRAS.443L.129C ,
On the Fe K absorption - accretion state connection in the Galactic Centre neutron star X-ray binary AX J1745.6-2901 . Ponti, G., Bianchi, S., et all. . MNRAS . 446-1536 . 2015 . 2015MNRAS.446.1536P ,
The X-ray outburst of the Galactic Centre magnetar SGR J1745-2900 during the first 1.5 year . Coti Zelati, F., Rea, N., et all. . MNRAS . 449-2685 . 2015 . 2015MNRAS.449.2685C ,
Fifteen years of XMM-Newton and Chandra monitoring of Sgr A*: evidence for a recent increase in the bright flaring rate . Ponti, G., De Marco, B., et all. . MNRAS . 454-1525 . 2015 . 2015MNRAS.454.1525P ,
Simultaneous Multi-band Radio and X-Ray Observations of the Galactic Center Magnetar SGR 1745-2900 . Pennucci, T. T., Possenti, A., et all. . ApJ . 808-81 . 2015 . 2015ApJ...808...81P ,
High ionisation absorption in low mass X-ray binaries . Ponti, G., Bianchi, S., et all. . AN . 337-512 . 2016 . 2016AN....337..512P ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . ...,
The puzzling orbital period evolution of the LMXB AX J1745.6-2901 . Ponti, G., De, K., et all. . MNRAS . 464-840 . 2017 . 2017MNRAS.464..840P ,
Not that long time ago in the nearest galaxy: 3D slice of molecular gas revealed by a 110 yr old flare of Sgr A* . Churazov, E., Khabibullin, I., et all. . MNRAS . 465-45 . 2017 . 2017MNRAS.465...45C ,
A powerful flare from Sgr A* confirms the synchrotron nature of the X-ray emission . Ponti, G., George, E., et all. . MNRAS . 468-2447 . 2017 . 2017MNRAS.468.2447P ,
Polarization and long-term variability of Sgr A* X-ray echo . Churazov, E., Khabibullin, I., et all. . MNRAS . 468-165 . 2017 . 2017MNRAS.468..165C ,
Sixteen years of X-ray monitoring of Sagittarius A*: Evidence for a decay of the faint flaring rate from 2013 August, 13 months before a rise in the bright flaring rate . Mossoux, Enmanuelle, Grosso, Nicolas, . A&A . 604-85 . 2017 . 2017A&A...604A..85M ,
Probing the interstellar dust towards the Galactic Centre: dust-scattering halo around AX J1745.6-2901 . Jin, Chichuan, Ponti, Gabriele, et all. . MNRAS . 468-2532 . 2017 . 2017MNRAS.468.2532J ,
Chandra monitoring of the Galactic Centre magnetar SGR J1745-2900 during the initial 3.5 years of outburst decay . Coti Zelati, F., Rea, N., et all. . MNRAS . 471-1819 . 2017 . 2017MNRAS.471.1819C ,
Can Sgr A* flares reveal the molecular gas density PDF? . Churazov, E., Khabibullin, I., et all. . MNRAS . 471-3293 . 2017 . 2017MNRAS.471.3293C ,
A transient, flat spectrum radio pulsar near the Galactic Centre . Dexter, J., Degenaar, N., et all. . MNRAS . 468-1486 . 2017 . 2017MNRAS.468.1486D ,
A 149 min periodicity underlies the X-ray flaring of Sgr A* . Leibowitz, Elia, . MNRAS . 474-3380 . 2018 . 2018MNRAS.474.3380L ,
Effects of interstellar dust scattering on the X-ray eclipses of the LMXB AX J1745.6-2901 in the Galactic Centre . Jin, Chichuan, Ponti, Gabriele, et all. . MNRAS . 477-3480 . 2018 . 2018MNRAS.477.3480J ,
X-ray chimneys in the Galactic Centre . Chernyakova, Masha, . Natur . 567-318 . 2019 . 2019Natur.567..318C ,
An X-ray chimney extending hundreds of parsecs above and below the Galactic Centre . Ponti, G., Hofmann, F., et all. . Natur . 567-347 . 2019 . 2019Natur.567..347P ,
A Rapidly Varying Red Supergiant X-Ray Binary in the Galactic Center . Gottlieb, Amy M., Eikenberry, Stephen S., et all. . ApJ . 896-32 . 2020 . 2020ApJ...896...32G ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2013-08-30T20:13:12Z/2013-09-23T09:27:29Z
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 2014-10-10T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2014-10-10T00:00:00Z, 072421, 17.56_20190403_1200. https://doi.org/10.5270/esa-wbpoh3o