| Name | 069467 |
| Title | Are All ULXs Created Equal? The Globular Cluster ULX in the S0 Galaxy NGC 1380 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0694670101 |
| 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, 2014-02-19T00:00:00Z, 069467, 17.56_20190403_1200. https://doi.org/10.5270/esa-migep5u |