PV- We will perform high resolution spectroscopy of 4U1624-49 with the RGS. Thissource is known as the .Big Dipper., because it exhibits periodic, deep dips in its orbital lightcurve. The dips are likely due to an increase in absorption,caused by material associated with the accretion disk rim crossing the line ofsight to the continuum source. During periods when the direct continuum sourceis blocked, we may detect narrow line emission originating in a corona-likestructure, in analogy with emission from Seyfert II galaxies.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2001-02-11T23:00:42Z/2001-02-12T23:05:18Z
Version
17.56_20190403_1200
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.
European Space Agency, Dr Albert Brinkman, 2001, 'Absorption Spectroscopy of the Big Dipper comma 4U1624-49.', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-w67pxhd
