
| 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 |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2008-04-03T07:50:05Z/2008-04-03T16:58:42Z |
| 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 | 2009-06-10T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "xray energies exists", "XMM-Newton", "bright radio", "dedicated coverage", "supernova remnant g6", "ir source", "multiwavelength picture", "XMM", "w28 complex", "potential counterpart", "2x30 pointings", "G6.4", "xray data", "2004 2006", "xmm newton" |
| 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', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-fjtu5qi |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |