A dataset provided by the European Space Agency

Name 076489
Title Late X-ray observations to unveil non-Forward Shock components in GRB afterglows


DOI https://doi.org/10.5270/esa-n7ctiqy
Author Dr Massimiliano De Pasquale
Description Certain features of Gamma-Ray Bursts (GRBs) are hard to explain in the context of the Forward Shock (FS) model. Specifically, X-ray light curves of a few GRB afterglows show a steep drop not seen in the optical. A solution is that the early X-ray emission is of internal origin, possibly powered by a newly born magnetar. When this ceases, the X-ray emission drops. The optical is entirely FS emission. If this model holds true, the late X-ray flux should decay similarly to the optical, when the FS emission prevails. We test this scenario, with late observations of 2 Swift GRBs. Measuring the X-ray flux we can infer the ejecta energy and how the magnetar central engine distributes the energy of the event into different channels. The predicted flux, too faint for Swift, requires XMM-Newton observations.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2017-12-14T06:46:07Z/2017-12-18T01:08:16Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2019-01-09T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2019-01-09T23:00:00Z, 076489, 17.56_20190403_1200. https://doi.org/10.5270/esa-n7ctiqy