Low-mass black hole (LMBH) with masses of < 10^6 M_sun are important in studiesof black hole physics and cosmology, but little is known about LMBH as apopulation due to their rarity, especially in the X-ray band. We propose toobserve with XMM a well defined, X-ray bright sample of AGN with the low blackhole masses estimated from the virial method, which are discovered in our recentwork. XMM will enable detailed studies of X-ray spectral and temporal propertiesfor such objects both individually and as a sample extending up to 10keV energyrange, and will double the size of LMBH AGN with high S/N X-ray spectra to abouttwo dozens.
Publications
On the Black Hole Mass---X-Ray Excess Variance Scaling Relation for Active Galactic Nuclei in the Low-mass Regime |Pan, Hai-Wu, Yuan, Weimin, et al. | ApJ | 808-163 | 2015 | 2015ApJ...808..163P | http://ui.adsabs.harvard.edu/#abs/2015ApJ...808..163P
A Comparison of X-Ray Photon Indices among the Narrow- and Broad-line Seyfert 1 Galaxies |Ojha, Vineet, Chand, Hum, et al. | ApJ | 896-95 | 2020 | 2020ApJ...896...95O | http://ui.adsabs.harvard.edu/#abs/2020ApJ...896...95O
High-density disc reflection spectroscopy of low-mass active galactic nuclei |Mallick, L., Fabian, A. C., et al. | MNRAS | 513-4361 | 2022 | 2022MNRAS.513.4361M | http://ui.adsabs.harvard.edu/#abs/2022MNRAS.513.4361M
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
2014-11-01T18:57:50Z/2015-01-31T12:22:59Z
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 Weimin Yuan, 2016, 'Study of a sample of X-ray bright AGN with low black hole masses', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-x5iasw2
