| Name | 040375 |
| Title | X-ray characterization of the FIRST Flat Spectrum Sample |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0403750101 |
| DOI | https://doi.org/10.5270/esa-r2nfx09 |
| Author | Dr Giovanni Fossati |
| Description | The FIRST Flat Spectrum Sample (FFSS) is a deep radio-selected sample, unbiased with respect to x-ray emission. It is designed to enable us to determine the true census of the different types of blazars, resolving a long-standing uncertainty, and the first step towards understanding how Nature makes jets. This proposal aims to determine the type of FIRST blazars, which is easily determined from radio-optical-X color and basic information about X-ray spectrum (hardness ratios). We propose to complete the x-ray characterization of a first FFSS subsample by observing the 17 sources for which no X-ray information currently exists. With this information we will be able to answer the key question: What kind of jets does Nature make? |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-06-05T17:33:38Z/2007-03-23T14:49:45Z |
| 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 | 2008-04-13T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Giovanni Fossati, 2008, 040375, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-r2nfx09 |