| Name | 090128 |
| Title | Observation of the candidate persistent Be X-ray binary pulsar 4U 0728-25 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0901280101 |
| DOI | https://doi.org/10.57780/esa-[xxxxxxx] |
| Author | European Space Agency |
| Description | The persistent Be accreting pulsars are a sub-class of the BeXRBs characterized by persistently low luminosity (Lx = 10^(34-35) erg/s) and long pulse period (P > 100 s). Since in these binaries the matter is accreted from the low-density wind of the companion star, these systems are a particularly interesting laboratory to study the emission processes occuring at low accretion rates. Therefore, it is very important to identify and investigate new sources of this type. To this aim, we propose to observe the Galactic Be pulsar 4U 0728-25, which is a poorly studied candidate member of this class of sources. Our aim is to examine, at an unprecedented sensitivity level, its spectral and timing properties, and to test if the description of the other persistent pulsars is applicable also in this case. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2023-04-10T20:55:36Z/2023-04-11T09:48:56Z |
| Version | 20.10_20230417_1156 |
| 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 | 2024-05-09T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2024, Observation Of The Candidate Persistent Be X-Ray Binary Pulsar 4U 0728-25, 20.10_20230417_1156, European Space Agency, https://doi.org/10.57780/esa-[xxxxxxx] |