| Proposal ID | 020405 |
| Title | A DEEP LOOK AT THE (RELATIVELY) X-RAY BRIGHT BALQSO FIRST 1556+3517 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0204050301 |
| DOI | https://doi.org/10.5270/esa-wytbpei |
| Principal Investigator, PI | Prof MICHAEL BROTHERTON |
| Abstract | We propose a 40 ks EPIC observation of the low-ionization broad absorption line(LoBAL) quasar FIRST 1556+3517. BAL quasars are X-ray faint and only since theadvent of XMM and Chandra have they been routinely detected. Initial surveysreveal that the high-ionzation BAL (HiBAL) quasars are the X-ray brightest ofthe class and are apparently normal quasars with moderate to high line-of-sightabsorbing column densities. LoBAL quasars are significantly fainter in theX-rays. The red, radio-loud BALQSO FIRST 1556+3517, a short-exposure target ofboth Chandra and XMM, is the X-ray brightest LoBAL quasar known at highredshifts and luminosities. The spectrum is too soft and faint to result fromsimple absorption, and is probably relfected as in Seyfert 2 galaxies. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2005-02-17T21:42:10Z/2005-07-15T19:43:10Z |
| Version | 21.51_20241115_1113 |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2006-08-05T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "initial surveys", "xray brightest", "lobal quasars", "short exposure target", "deep look", "apparently normal quasars", "EPIC", "XMM", "radio loud balqso", "simple absorption", "xray faint", "bal quasars" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof MICHAEL BROTHERTON, 2006, 'A DEEP LOOK AT THE (RELATIVELY) X-RAY BRIGHT BALQSO FIRST 1556+3517', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-wytbpei |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |