Cross-calibration with Chandra is important and best done on simultaneousobservations of objects with smooth continua as the whole of the detectorsare illuminated. The proposed work is part of the Chandra effort to understandthe significant build-up of ACIS contamination. Simultaneous observationswill help both us and them. They are planning two 30ks observations numbered4430 (ACIS-S+HETG) and 4431 (ACIS-S+LETG) in the Chandra long-term scheduleand have undertaken to make an effort to do them when visible by XMM, whichis not the case in the current rough plan.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2003-07-07T17:40:27Z/2003-07-08T09:56:24Z
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, Mr Andy Pollock, 2005, 'Simultaneous XMM-Chandra Observations of 3C273', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0wr439f
