A dataset provided by the European Space Agency

Name: Large Halos of Missing Baryons Around Galaxies
Published: 2011-12-22T00:00:00Z

Proposal ID	065329
Title	Large Halos of Missing Baryons Around Galaxies
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0653290101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0653290201
DOI	https://doi.org/10.5270/esa-4w0xeg4
Principal Investigator, PI	Prof Joel Bregman
Abstract	If galaxies had the cosmological baryon-to-dark matter ratio, they would have3-30 times their observed baryon mass. These missing baryons are undetected, butsome fraction may surround a galaxy with a hot diffuse halo extending toR_virial (250 kpc). A loosely bound gaseous halo could be stripped in a clusteror group environment, but should be relatively undisturbed around isolatedlate-type spirals. Existing observations of spirals are mainly of nearbysystems, where only the inner parts fit in a field of view so a halo on thescale of R_virial would pass unnoticed. To detect or place limits on a largehalo of missing baryons, we propose to observe isolated L* spirals sufficientlydistant that we can detect emission to at least R_virial.
Publications	Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift \|Yershov V. N. \| Ap&SS \| 354-97 \| 2014 \| 2014Ap&SS.354...97Y \| http://ui.adsabs.harvard.edu/#abs/2014Ap&SS.354...97Y Ensemble X-ray variability of active galactic nuclei. II. Excess variance and updated structure function \|Vagnetti F. Middei R. et al. \| A&A \| 593-55 \| 2016 \| 2016A&A...593A..55V \| http://ui.adsabs.harvard.edu/#abs/2016A&A...593A..55V 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 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 The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P 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
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2010-12-04T05:58:44Z/2010-12-05T00:00:30Z
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	2011-12-22T00:00:00Z
Last Update	2025-01-27
Keywords	"pass unnoticed", "missing baryons", "baryon mass", "relatively undisturbed", "nearby systems", "hot diffuse halo", "dark matter ratio", "cosmological baryon"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof Joel Bregman, 2011, 'Large Halos of Missing Baryons Around Galaxies', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-4w0xeg4