The UvA-LINKER will give you a range of other options to find the full text of a publication (including a direct link to the full-text if it is located on another database on the internet).
De UvA-LINKER biedt mogelijkheden om een publicatie elders te vinden (inclusief een directe link naar de publicatie online als deze beschikbaar is in een database op het internet).
journal id: "astrophysicalxjournal"
| Authors||G.C. McLaughlin, R.A.M.J. Wijers, G.E. Brown, H.A. Bethe|
|Title||Broad and Shifted Iron-Group Emission Lines in Gamma-Ray Bursts as Tests of the Hypernova Scenario|
|Faculty||Faculty of Science|
|Institute/dept.||FNWI: Astronomical Institute Anton Pannekoek (IAP)|
|Keywords||Gamma ray bursts; Supernovae|
|Abstract||In the hypernova/collapsar model of gamma-ray bursts, it is natural that radiation is emitted by the inner engine for some time after the burst. This has been discussed as a possible source of the X-ray line emission observed in some afterglows. We show here that the natural geometry of a hypernova-a source of radiation at the bottom of a deep funnel-has very significant consequences for the shape and central energy of the observed emission lines; the lines acquire a very broad scattering wing on the low-energy side and a characteristic second peak 1 Compton wavelength away from the initial energy due to the once- and twice-scattered photons. We suggest that this explains the large width of the observed lines. Furthermore, the downscattering lowers the central line energy (by up to 1 keV in the source rest frame, before the lines become unrecognizable) so that the observed line energies can become consistent with originating from cobalt and nickel, as expected in few-day-old supernova ejecta.|
|Note||©2002 American Astronomical Society|
Use this url to link to this page: http://dare.uva.nl/en/record/102650
Contact us about this recordNotify a colleague
Add to bookbag