|Title||The nature of X-ray emission in BL Lac objects|
|Author||Dr Francesco Massaro|
|Description||The 77% of TeV extragalactic sources are BL Lacs. They belong to the High frequency peaked BL Lacs (HBLs) subclass characterized by a low-energy component with power peaking between the UV and the X-rays. We propose xmmvirgulobservations of a selected sample of HBLs, to study the spectral behavior of their optical to X-ray component. In addition, on the basis of our previous X-ray analyses of TeV e non TeV HBLs, these proposed xmmvirgulobservations will allow us to identify BL Lac candidates for future TeV observations.|
|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, 2014-01-25T00:00:00Z, 069132, 17.56_20190403_1200. https://doi.org/10.5270/esa-f21mx2e|