A dataset provided by the European Space Agency

Name: Monitoring the close encounter between a small cloud and a supermassive BH
Published: 2014-10-10T00:00:00Z

Proposal ID	072421
Title	Monitoring the close encounter between a small cloud and a supermassive BH
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0724210201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0724210501
DOI	https://doi.org/10.5270/esa-wbpoh3o
Principal Investigator, PI	Dr Gabriele Ponti
Abstract	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 September2013. At a minimum, the cloud-SgrA* interaction is expected to induce enhancedemission varying on timescales of months/years. However, the cloud physics andSgrAs close environment are not well understood. We propose 450ks XMMobservations to study the near-future evolution of the cloud. Its emissionproperties will be a sensitive probe of the characteristics of the accretionflow onto the supermassive Galactic BH, at milli-parsec scales.
Publications	A Strongly Magnetized Pulsar within the Grasp of the Milky Ways Supermassive Black Hole \|Rea N. Esposito P. et al. \| ApJ \| 775-34 \| 2013 \| 2013ApJ...775L..34R \| http://ui.adsabs.harvard.edu/#abs/2013ApJ...775L..34R Variation of the X-ray non-thermal emission in the Arches cloud \|Clavel M. Soldi S. et al. \| MNRAS \| 443-129 \| 2014 \| 2014MNRAS.443L.129C \| http://ui.adsabs.harvard.edu/#abs/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 al. \| MNRAS \| 446-1536 \| 2015 \| 2015MNRAS.446.1536P \| http://ui.adsabs.harvard.edu/#abs/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 al. \| MNRAS \| 449-2685 \| 2015 \| 2015MNRAS.449.2685C \| http://ui.adsabs.harvard.edu/#abs/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 al. \| MNRAS \| 454-1525 \| 2015 \| 2015MNRAS.454.1525P \| http://ui.adsabs.harvard.edu/#abs/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 al. \| ApJ \| 808-81 \| 2015 \| 2015ApJ...808...81P \| http://ui.adsabs.harvard.edu/#abs/2015ApJ...808...81P High ionisation absorption in low mass X-ray binaries \|Ponti G. Bianchi S. et al. \| AN \| 337-512 \| 2016 \| 2016AN....337..512P \| http://ui.adsabs.harvard.edu/#abs/2016AN....337..512P The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch Eric W. \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/2016PASA...33...52F The puzzling orbital period evolution of the LMXB AX J1745.6-2901 \|Ponti G. De K. et al. \| MNRAS \| 464-840 \| 2017 \| 2017MNRAS.464..840P \| http://ui.adsabs.harvard.edu/#abs/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 al. \| MNRAS \| 465-45 \| 2017 \| 2017MNRAS.465...45C \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.465...45C A powerful flare from Sgr A* confirms the synchrotron nature of the X-ray emission \|Ponti G. George E. et al. \| MNRAS \| 468-2447 \| 2017 \| 2017MNRAS.468.2447P \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.468.2447P Polarization and long-term variability of Sgr A* X-ray echo \|Churazov E. Khabibullin I. et al. \| MNRAS \| 468-165 \| 2017 \| 2017MNRAS.468..165C \| http://ui.adsabs.harvard.edu/#abs/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 \| http://ui.adsabs.harvard.edu/#abs/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 al. \| MNRAS \| 468-2532 \| 2017 \| 2017MNRAS.468.2532J \| http://ui.adsabs.harvard.edu/#abs/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 al. \| MNRAS \| 471-1819 \| 2017 \| 2017MNRAS.471.1819C \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.471.1819C Can Sgr A flares reveal the molecular gas density PDF? \|Churazov E. Khabibullin I. et al. \| MNRAS \| 471-3293 \| 2017 \| 2017MNRAS.471.3293C \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.471.3293C A transient flat spectrum radio pulsar near the Galactic Centre \|Dexter J. Degenaar N. et al. \| MNRAS \| 468-1486 \| 2017 \| 2017MNRAS.468.1486D \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.468.1486D A 149 min periodicity underlies the X-ray flaring of Sgr A* \|Leibowitz Elia \| MNRAS \| 474-3380 \| 2018 \| 2018MNRAS.474.3380L \| http://ui.adsabs.harvard.edu/#abs/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 al. \| MNRAS \| 477-3480 \| 2018 \| 2018MNRAS.477.3480J \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.477.3480J X-ray chimneys in the Galactic Centre \|Chernyakova Masha \| Natur \| 567-318 \| 2019 \| 2019Natur.567..318C \| http://ui.adsabs.harvard.edu/#abs/2019Natur.567..318C An X-ray chimney extending hundreds of parsecs above and below the Galactic Centre \|Ponti G. Hofmann F. et al. \| Natur \| 567-347 \| 2019 \| 2019Natur.567..347P \| http://ui.adsabs.harvard.edu/#abs/2019Natur.567..347P A Rapidly Varying Red Supergiant X-Ray Binary in the Galactic Center \|Gottlieb Amy M. Eikenberry Stephen S. et al. \| ApJ \| 896-32 \| 2020 \| 2020ApJ...896...32G \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...896...32G The Galactic center chimneys: the base of the multiphase outflow of the Milky Way \|Ponti G. Morris M. R. et al. \| A&A \| 646-66 \| 2021 \| 2021A&A...646A..66P \| http://ui.adsabs.harvard.edu/#abs/2021A&A...646A..66P Classification of 4XMM-DR9 sources by machine learning \|Zhang Yanxia Zhao Yongheng \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z Tracing the Milky Ways Vestigial Nuclear Jet \|Cecil Gerald Wagner Alexander Y. et al. \| ApJ \| 922-254 \| 2021 \| 2021ApJ...922..254C \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...922..254C SRG/eROSITA view of X-ray reflection in the Central Molecular Zone: a snapshot in September-October 2019 \|Khabibullin Ildar Churazov Eugene \| MNRAS \| 509-6068 \| 2022 \| 2022MNRAS.509.6068K \| http://ui.adsabs.harvard.edu/#abs/2022MNRAS.509.6068K The episodic and multiscale Galactic Centre \|Bryant Aaron Krabbe Alfred \| NewAR \| 93-101630 \| 2021 \| 2021NewAR..9301630B \| http://ui.adsabs.harvard.edu/#abs/2021NewAR..9301630B Constraining particle acceleration in Sgr A^u22c6 with simultaneous GRAVITY Spitzer NuSTAR and Chandra observations \|GRAVITY Collaboration Abuter R. et al. \| A&A \| 654-22 \| 2021 \| 2021A&A...654A..22G \| http://ui.adsabs.harvard.edu/#abs/2021A&A...654A..22G X-ray astronomy comes of age \|Wilkes Belinda J. Tucker Wallace et al. \| Natur \| 606-261 \| 2022 \| 2022Natur.606..261W \| http://ui.adsabs.harvard.edu/#abs/2022Natur.606..261W X-ray polarization evidence for a 200-year-old flare of Sgr A^* \|Marin Fru00e9du00e9ric Churazov Eugene et al. \| Natur \| 619-41 \| 2023 \| 2023Natur.619...41M \| http://ui.adsabs.harvard.edu/#abs/2023Natur.619...41M Scientific objectives of the Hot Universe Baryon Surveyor (HUBS) mission \|Bregman Joel Cen Renyue et al. \| SCPMA \| 66-299513 \| 2023 \| 2023SCPMA..6699513B \| http://ui.adsabs.harvard.edu/#abs/2023SCPMA..6699513B The Fermi/eROSITA bubbles: a look into the nuclear outflow from the Milky Way \|Sarkar Kartick C. \| A&ARv \| 32-1 \| 2024 \| 2024A&ARv..32....1S \| http://ui.adsabs.harvard.edu/#abs/2024A&ARv..32....1S X-ray reprocessing: Through the eclipse spectra of low mass X-ray binaries with XMM-Newton \|Aftab Nafisa Paul Biswajit \| NewA \| 106-102109 \| 2024 \| 2024NewA..10602109A \| http://ui.adsabs.harvard.edu/#abs/2024NewA..10602109A Robust constraints on feebly interacting particles using XMM-Newton \|Luque Pedro De la Torre Balaji Shyam \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque Pedro De la Torre Balaji Shyam \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D New 511 keV Line Data Provide Strongest sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 973-L6 \| 2024 \| 2024ApJ...973L...6D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...973L...6D
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 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	2014-10-10T00:00:00Z
Last Update	2025-08-04
Keywords	"XMM", "sgra *'", "accelerating towards sgra", "2200 rs", "supermassive galactic bh", "future evolution", "milli parsec scales", "emission properties", "accretion flow", "gas cloud", "cloud physics", "close encounter", "cloud sgra", "september 2013", "supermassive bh", "sensitive probe"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Gabriele Ponti, 2014, 'Monitoring the close encounter between a small cloud and a supermassive BH', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wbpoh3o