Proposal ID | 008414 |
Title | Diagnostics of Intermediate Redshift Galaxies using Background Bl Lacs |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0084140101 |
DOI | https://doi.org/10.5270/esa-tqirkgl |
Principal Investigator, PI | Prof Brian McBreen |
Abstract | We propose to use the featureless X-ray spectra of background BL Lacs asback-lighting continua to reveal absorption edges due to elements in theinterstellar medium of intervening galaxies at intermediate redshifts and hencemeasure the abundances of these elements. Three BL Lacs have been carefullyselected and are excellent candidates for EPIC on XMM. Redshifted absorptionlines are clearly visible in the simulated spectra, demonstrating thefeasibility of using this technique with XMM. We have observed two of thesources, MS0205+3509 and B2 1308+326 with ASCA through the ESA/Japanese program.However, the sensitivity of XMM is required for the program presented here. |
Publications |
|
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2001-02-14T07:06:41Z/2002-02-05T00:42:11Z |
Version | 17.56_20190403_1200 |
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 | 2003-02-27T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "background bl lacs", "japanese program", "EPIC", "intermediate redshifts", "intervening galaxy", "interstellar medium", "redshifted absorption lines", "bl lacs", "intermediate redshift galaxy", "XMM", "simulated spectra", "absorption edges", "lighting continua", "b2 1308", "featureless xray spectra" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Prof Brian McBreen, 2003, 'Diagnostics of Intermediate Redshift Galaxies using Background Bl Lacs', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-tqirkgl |