A dataset provided by the European Space Agency

Proposal ID 009417
Title Search for X--ray spectral features in two BL Lac Objects
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0094170101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0094170301

DOI https://doi.org/10.5270/esa-prsyshi
Principal Investigator, PI Dr Julian Krolik
Abstract We propose 20 ks XMM observations on each of the two X--ray bright BL Lac objects Mkn 180 and 1ES1517+656. Our primary aim is to study the strong soft X-ray absorption feaures that are sometimes seen in BL Lac objects (such as PKS 2155-304 and others). Our main scientific goals are (1) to begin determining how generic these features are in BL Lacs; and (2) to study these features in sufficient detail to determine their origin. Other benefits may also accrue, such as detecting intervening absorption, or providing a new way to measure BL Lac object redshifts.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-04-12T08:28:45Z/2001-04-12T16:37:53Z
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 2002-12-21T00:00:00Z
Keywords "intervening absorption", "x ray spectral", "XMM", "Mkn 180", "bl lacs", "2155 304", "main scientific", "bl lac objects"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Julian Krolik, 2002, 'Search for X--ray spectral features in two BL Lac Objects', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-prsyshi