A dataset provided by the European Space Agency

Name 040014
Title Monitoring the spectral variability of the isolated neutron star RX J0720.4-3125


DOI https://doi.org/10.5270/esa-rer9ufx
Author Dr Jacco Vink
Description RX J0720.4-3125 belongs to a small group radio-quiet isolated neutron stars, whose X-ray spectra consist of a broad absorption feature superimposed on a blackbody continuum. However, it is unique in that it is the only source in which time evolution of the absorption feature and thermal component has been observed. The origin of the changes is still unclear, but their study is of great potential importance for revealing physical properties of isolated neutron stars. The spectral evolution may be caused by changes in the star.s viewing angle, thermal and-or magnetic field distribution. To distinguish between these possibilities, we propose to continue monitoring RX J0720.4-3125. This will also help to further constrain the timing properties of this intriguing source.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-05-22T04:44:47Z/2006-11-05T17:24:41Z
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 2007-12-05T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-12-05T00:00:00Z, 040014, 17.56_20190403_1200. https://doi.org/10.5270/esa-rer9ufx