| Name | 050166 |
| Title | Looking for a thermal emission component in BL Lacertae |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0501660201 |
| DOI | https://doi.org/10.5270/esa-5ogq9l6 |
| Author | Dr Claudia M. Raiteri |
| Description | We propose to observe BL Lacertae with XMM-Newton three times in AO6, to construct its SED in different brightness states. Our interest is focused on the UV and soft X-ray energy domains, and this makes XMM-Newton the ideal instrument to attain our goal, which is to investigate the existence of a UV to soft-X-ray bump, as we detected in AO 0235+16 with observations in AO3. This would mean that in BL Lac objects there may be an important emission component in addition to the synchrotron and inverse-Compton ones, which is likely the photoionizing source of the broad line region, similarly to the blue bump of FSRQs. Simultaneous observations at low frequencies by the WEBT will allow to to study the correlations among the emissions at different wavelengths. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-07-10T23:05:55Z/2008-01-08T21:34:00Z |
| 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 | 2009-03-14T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Claudia M. Raiteri, 2009, 050166, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-5ogq9l6 |