|Title||The Elusive Transient AXP|
|Author||Dr George Pavlov|
|Description||ASCA observations of 1993 revealed a point source, AX J1845.0-0258, whose 7 s period and spectrum strongly suggest that it is an anomalous X-ray pulsar (AXP). However, the brightest object seen in further observations with various X-ray missions in the ASCA error circle was a factor of 15 fainter, too faint to detect pulsations and confirm that this source is a transient AXP (TAXP) in a quiescent state. In the proposed observation we will either detect pulsations from the TAXP candidate, thus measuring the period derivative, age and magnetic field, or prove that this object is not related to the originally observed X-ray pulsar. In the latter case, we will either detect an even fainter actual TAXP or establish a stringent upper limit on its quiescent flux.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2011-05-25T00:00:00Z, 060235, 17.56_20190403_1200. https://doi.org/10.5270/esa-s55369r|