|Title||Characterizing the high-energy irradiation of four hot Neptunes|
|Author||Mr Michael Salz|
|Description||We propose to measure the high-energy irradiation of four hot Neptunes in the solar neighborhood to determine the planetary mass loss rates. Strong irradiation of gas planets in close proximity to their host stars powers a planetary wind. Small planets are heavily affected by the mass loss and could eventually lose their gaseous envelopes. Our targets are among the most promising candidates in the search for winds of hot gas planets. We will use the X-ray luminosities to derive the total high-energy emission of the host star, which provides an estimate for the planetary mass loss rate. Thus, we can determine the impact of photoevaporation on the evolution of these small gas planets. The observations refine the prospects for characterizing the planetary atmospheres via transit spectroscopy.|
|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, 2016-09-07T22:00:00Z, 076346, 17.56_20190403_1200. https://doi.org/10.5270/esa-2m2mhs1|