|Title||Constraining the Mapping Between Initial Stellar Masses and Compact Remnants|
|Author||Dr Michael Muno|
|Description||There is currently little observational guidance as to the masses of stars that leave behind neutron stars and black holes. Three of the four best constraints come from X-ray pulsars that are associated with young star clusters. Remarkably, all three of these limits suggests that the progenitors were massive, with lower limits between 20 and 50 Msun. Moreover, the neutron stars themselves appear to be highly-magnetized, with Bvirgul1e14 G, compared to Bvirgul1e12 G for an ordinary radio pulsar. More constraints on the masses of progenitors are clearly needed, so we are proposing a pilot study of 2 candidate young clusters of massive stars to search for X-ray pulsars.|
|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, 2008-03-23T00:00:00Z, 040442, 17.56_20190403_1200. https://doi.org/10.5270/esa-7w2d94k|