A dataset provided by the European Space Agency

Proposal ID 050385
Title Disentangling the multiwavelength picture of the VHE gamma-ray emission in W28
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0503850101

DOI https://doi.org/10.5270/esa-fjtu5qi
Principal Investigator, PI Dr Stefan Funk
Abstract H.E.S.S. observations (2004-2006) have revealed extended VHE gamma-ray emission in several parts of the W28 complex, hosting the Supernova remnant (SNR)G6.4-0.1. The strongest gamma-ray emission is however located in a regionoutside of the SNR boundary towards the South of W28. We propose XMM-Newtonobservations (60 ks in 2x30 ks pointings) of this southern gamma-ray source forwhich, at present, no dedicated coverage at X-ray energies exists. A potentialcounterpart for this VHE gamma-ray source is the ultra-compact HII region W28A2,exhibiting a powerful bipolar molecular outflow and being a bright radio and IRsource. With the X-ray data, we will can test this hypothesis, and also tounveil the role of the relatively old SNR G6.4-0.1 in this part of the unique W28 complex.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2008-04-03T07:50:05Z/2008-04-03T16:58:42Z
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 2009-06-10T00:00:00Z
Last Update 2025-01-27
Keywords "G6.4", "w28 complex", "potential counterpart", "XMM", "ir source", "xray data", "2004 2006", "xmm newton", "dedicated coverage", "2x30 pointings", "XMM-Newton", "supernova remnant g6", "multiwavelength picture", "xray energies exists", "bright radio"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Stefan Funk, 2009, 'Disentangling the multiwavelength picture of the VHE gamma-ray emission in W28', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fjtu5qi