A dataset provided by the European Space Agency

Name 069467
Title Are All ULXs Created Equal? The Globular Cluster ULX in the S0 Galaxy NGC 1380


DOI https://doi.org/10.5270/esa-migep5u
Author Prof Craig Sarazin
Description Most Ultra-Luminous X-ray sources (ULXs) are now believed to be associated with
stellar mass black holes (StMBHs); however, ULXs in globular clusters are
natural candidates among which to search for (the elusive) IMBHs. Our Chandra
and HST observations of the S0 galaxy NGC 1380 detected the third bona-fide ULX
located in a GC that shows both large variability and persistent ULX emission.
The ULX is a 5.8e39 erg/s source with atypically hard emission. Our proposed XMM
observation will accurately measure the spectrum of the source, allowing us to
classify it as a likely StMBH or IMBH. The variability will be determined,
including searches for an orbital period, low frequency QPOs, a power-spectrum
break, or a state change (associated spectral/luminosity variation), giving a mass estimate.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2013-01-25T21:03:51Z/2013-01-27T01:42:28Z
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 2014-02-19T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Craig Sarazin, 2014, 069467, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-migep5u