| Proposal ID | 005161 |
| Title | The Unique Case of the Supernova/GRB Event of 25 April 1998 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0051610101 |
| DOI | https://doi.org/10.5270/esa-zwrfi2m |
| Principal Investigator, PI | Dr Elena Pian |
| Abstract | BSAX and BATSE/XTE were able to localize about 20 Gamma Ray Bursts (GRBs).For 13of these X-ray afterglows have been detected. The observed X-ray counterpartsgenerally fade rapidly and monotonically with time, following a power-law withan average index of 1.3. The only exception is GRB980425. This event is positio-nally and temporally consistent with the Type Ic supernova SN 1998bw exploded inthe nearby galaxy ESO 184-G82 (z=0.0085). This has raised the hypothesis that aclass of GRBs are produced by supernovae. Two weak sources were discovered inthe X-ray error circle by the follow-up BSAX observations but neither of the twofollows the classical power-law afterglow behavior. The aim of the proposed XMMobserv. is to study the spatial and spectral properties of these two sources. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2002-03-28T13:53:34Z/2002-03-28T20:10:38Z |
| 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 | 2003-07-16T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "xray counterparts", "spectral properties", "grb event", "xray afterglows", "positio nally", "average index", "weak sources", "xmm observ", "xray error circle", "power law" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Elena Pian, 2003, 'The Unique Case of the Supernova/GRB Event of 25 April 1998', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-zwrfi2m |