A dataset provided by the European Space Agency

Name 040057
Title X-ray Emission from Seyfert 2 Galaxies with Low-Mass Black Holes


DOI 10.5270/esa-g6173wd
Author Dr Aaron Barth
Description We have recently identified the first sample of Seyfert 2 nuclei in host galaxies with stellar velocity dispersions smaller than 60 km-s, as a way to detect and study black holes with likely masses below 10^6 solar masses. These galaxies are Type 2 analogs of "dwarf" Seyfert 1 galaxies such as NGC 4395 and POX 52. We propose to obtain XMM exposures of four Seyfert 2 galaxies with stellar velocity dispersions in the range 25-47 km-s in order to (a) determine X-ray luminosities as part of an overall program to measure the SEDs of these sources; (b) determine the amount of X-ray absorption to establish whether these are obscured versions of NLS1 galaxies; (c) search for variability, which is expected for AGNs with very low black hole masses.
Publication Emission and Absorption Properties of Low-Mass Type 2 Active Galaxies with XMM-Newton . Thornton, Carol E., Barth, Aaron J., et all. . ApJ . 705-1196 . 2009 . 2009ApJ...705.1196T ,
An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy . Levan, A. J., Tanvir, N. R., et all. . Sci . 333-199 . 2011 . 2011Sci...333..199L ,
New constraints on the X-ray spectral properties of type 1 active galactic nuclei . Scott, A. E., Stewart, G. C., et all. . MNRAS . 417-992 . 2011 . 2011MNRAS.417..992S ,
A combined optical and X-ray study of unobscured type 1 active galactic nuclei - I. Optical spectra and spectral energy distribution modelling . Jin, Chichuan, Ward, Martin, et all. . MNRAS . 420-1825 . 2012 . 2012MNRAS.420.1825J ,
The XMM Cluster Survey: optical analysis methodology and the first data release . Mehrtens, Nicola, Romer, A. Kathy, et all. . MNRAS . 423-1024 . 2012 . 2012MNRAS.423.1024M ,
The Origin of the Hot Gas in the Galactic Halo: Confronting Models with XMM-Newton Observations . Henley, David B., Shelton, Robin L., et all. . ApJ . 723-935 . 2010 . 2010ApJ...723..935H ,
X-ray Insights into the Physics of Mini-BAL Quasar Outflows . Gibson, Robert R., Brandt, W. N., et all. . ApJ . 696-924 . 2009 . 2009ApJ...696..924G ,
Are Optically Selected Quasars Universally X-Ray Luminous? X-Ray-UV Relations in Sloan Digital Sky Survey Quasars . ...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-05-06T05:51:34Z/2006-11-25T18:49:46Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2007-12-21T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-12-21T00:00:00Z, 040057, 17.56_20190403_1200. https://doi.org/10.5270/esa-g6173wd