Proper motions and variability of the H2 knots in the HH 111 and 121 protostellar outflows |
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| Authors: | Kristen E. K. Coppin,Christopher J. Davis,& Milena Micono |
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| Affiliation: | Department of Astronomy &38;Astrophysics, Pennsylvania State University, University Park, PA 16803, USA,;Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA |
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| Abstract: | We discuss the formation of spectral features in the decelerating ejecta of gamma-ray bursts, including the possible effect of inhomogeneities. These should lead to blueshifted and broadened absorption edges and resonant features, especially from H and He. An external neutral ISM could produce detectable H and He, as well as Fe X-ray absorption edges and lines. Hypernova scenarios may be diagnosed by Fe Kα and H Lyα emission lines. |
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| Keywords: | line: formation cosmology: miscellaneous gamma-rays: bursts X-rays: bursts |
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