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Wind Interaction Models for the Afterglows of GRB 991208 and GRB 000301C
Zhi-Yun Li, Roger A. Chevalier
The simplest model of the afterglows of the gamma-ray bursts (GRBs) envisions a spherical blast wave with a power-law distribution of electron energy above some cutoff running into…
The X-ray Remnant of SN1987A
David N. Burrows, Eli Michael, Una Hwang +6
We present high resolution Chandra observations of the remnant of SN1987A in the Large Magellanic Cloud. The high angular resolution of the Chandra X-ray Observatory (CXO) permits…
HST Spectroscopy of Spot 1 on the Circumstellar Ring of SN 1987A
Eli Michael, Richard McCray, C. S. J. Pun +15
We present ultraviolet and optical spectra of the first bright spot (PA = 29 degrees) on Supernova 1987A's equatorial circumstellar ring taken with the Space Telescope Imaging Spec…
Implications of the X-Ray Properties of Pulsar Nebulae
Roger A. Chevalier
A plausible model for the Crab Nebula is one in which a particle dominated, highly relativistic wind from the pulsar passes through a shock front in which the particles attain a po…
Young Circumstellar Disks Near Evolved Massive Stars and Supernovae
Roger A. Chevalier
There is increasing evidence that low mass stars with circumstellar disks can be born close to massive stars, in some cases within tenths of a pc. If the disks have lifetimes great…
Instabilities and Clumping in Type Ia Supernova Remnants
Chih-Yueh Wang, Roger A. Chevalier
We present two-dimensional high-resolution hydrodynamical simulations in spherical polar coordinates of a Type Ia supernova interacting with a constant density interstellar medium.…