|Title||Identity of Nuclear X-ray Sources in Bulge-less Galaxies|
|Author||Prof Smita Mathur|
|Description||We initiated a Chandra program to search for low-level nuclear activity in a representative sample of late-type galaxies within 20 Mpc. We propose XMM-Newton observations of two late-type galaxies, Scd and Sd, in both of which a nuclear X-ray source was detected with Chandra. X-ray spectra and optical-X-ray spectral energy distributions obtained with XMM-Newton will secure the identification of X-ray sources as either AGNs, low-mass X-ray binaries or star clusters. Discovering secure AGNs in these bulge-less galaxies will be exciting as it will imply that bulges are not necessary for existence of black holes. This will have important consequences towards understanding the formation and co-evolution of black holes and galaxies.|
|Publication||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 ,
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 ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
A new, clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies . Earnshaw, H. P., Roberts, T. P., et all. . MNRAS . 483-5554 . 2019 . 2019MNRAS.483.5554E ,
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2011-08-07T00:00:00Z, 065245, 17.56_20190403_1200. https://doi.org/10.5270/esa-1rvee60|