| Proposal ID | 090133 |
| Title | Shedding light onto the highly variable Ultraluminous X-ray source NGC7456 ULX1 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0901330101 |
| DOI | https://doi.org/10.57780/esa-0c7x9fv |
| Principal Investigator, PI | Dr Fabio Pintore |
| Abstract | Ultraluminous X-ray sources (ULXs) are bright, point-like sources, likelyhosting accreting compact objects in binary systems. It is believed that manyULXs can host either neutron stars or stellar mass black holes accreting atsuper-Eddington rates, although the relative number is not clear yet. Onlong-term timescales ULXs can be persistent or transient sources (i.e. fluxvariations of orders of magnitude), while their short-term variability ismarkedly different from source to source. Here we propose a 120 ks XMM-Newtonobservation of the galaxy NGC 7456, which hosts ULX-1, a source highly variableon timescales of a few ks. The main aim will be to characterize its extremeshort-term variability and spectral properties. At least other four transient ULXs are also present in the galaxy. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2023-04-28T19:46:12Z/2023-04-30T09:34:32Z |
| Version | 20.10_20230417_1156 |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2024-05-17T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | XMM-Newton, OM, RGS, EPIC, X-ray, Multi-Mirror, SAS |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Fabio Pintore, 2024, 'Shedding light onto the highly variable Ultraluminous X-ray source NGC7456 ULX1', 20.10_20230417_1156, European Space Agency, https://doi.org/10.57780/esa-0c7x9fv |