Most galaxy formation models predict that massive low-redshift disk galaxies areembedded in extended hot halos of externally accreted gas. Yet observationalstudies have so far failed to detect soft X-ray emission from such halos. Ourcosmological simulations, the first to produce fully realistic disk galaxies,suggest this is within reach but requires a factor of 10 increase in sensitivitycompared to existing X-ray studies. We propose a deep observation of the massivespiral NGC5746, to decisively test for the presence of such a halo and constrainits properties. A detection will confirm a basic tenet of disk galaxy formationmodels, whereas a non-detection will seriously challenge these models and imposenew constraints on the growth mode and feedback history of disk galaxies.
Publications
Synapses of active galactic nuclei:. Comparing X-ray and optical classifications using artificial neural networks |Gonzalez-Martin, O., Diaz-Gonzalez, D., et al. | A&A | 567-92 | 2014 | 2014A&A...567A..92G | http://ui.adsabs.harvard.edu/#abs/2014A&A...567A..92G
Non-detection of X-ray emission from sterile neutrinos in stacked galaxy spectra |Anderson, Michael E., Churazov, Eugene, | MNRAS | 452-3905 | 2015 | 2015MNRAS.452.3905A | http://ui.adsabs.harvard.edu/#abs/2015MNRAS.452.3905A
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
A new, clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies |Earnshaw, H. P., Roberts, T. P., et al. | MNRAS | 483-5554 | 2019 | 2019MNRAS.483.5554E | http://ui.adsabs.harvard.edu/#abs/2019MNRAS.483.5554E
The Redshift Evolution of Ultraluminous X-Ray Sources out to z 0.5: Comparison with X-Ray Binary Populations and Contribution to the Cosmic X-Ray Background |Scott Barrows, R., Comerford, Julia M., et al. | ApJ | 932-27 | 2022 | 2022ApJ...932...27S | http://ui.adsabs.harvard.edu/#abs/2022ApJ...932...27S
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
2011-01-10T14:54:00Z/2011-02-10T13:41:24Z
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.
European Space Agency, Dr Jesper Rasmussen, 2012, 'A deep search for a hot halo of NGC 5746: Constraining disk galaxy formation', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-7v6dp39
