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A New Young Galactic Supernova Remnant Containing a Compact Object: G15.9+0.2
S. P. Reynolds, K. J. Borkowski, U. Hwang +3
We identify the radio-emitting shell-type supernova remnant G15.9+0.2 as a relatively young remnant containing an X-ray point source that may be its associated neutron star. The in…
Dust Destruction in Fast Shocks of Core-Collapse Supernova Remnants in the Large Magellanic Cloud
Brian J. Williams, K. J. Borkowski, S. P. Reynolds +9
We report observations with the MIPS instrument aboard the {\it Spitzer Space Telescope} (SST) of four supernova remnants (SNRs) believed to be the result of core-collapse SNe: N13…
Chandra Smells a RRAT: X-ray Detection of a Rotating Radio Transient
B. M. Gaensler, M. McLaughlin, S. Reynolds +10
"Rotating RAdio Transients" (RRATs) are a newly discovered astronomical phenomenon, characterised by occasional brief radio bursts, with average intervals between bursts ranging fr…
Dense, Fe-rich Ejecta in Supernova Remnants DEM L238 and DEM L249: A New Class of Type Ia Supernova?
K. J. Borkowski, S. P. Hendrick, S. P. Reynolds
We present observations of two LMC supernova remnants (SNRs), DEM L238 and DEM L249, with the Chandra and XMM-Newton X-ray satellites. Bright central emission, surrounded by a fain…
The Expansion Asymmetry and Age of the Cassiopeia A Supernova Remnant
R. A. Fesen, M. C. Hammell, J. Morse +7
HST ACS images of the young SN remnant Cas A are used to explore the expansion and spatial distribution of its highest velocity debris. Proper motions of over 1800 outlying ejecta…
Chandra LETG Observations of Supernova Remnant 1987A
Svetozar A. Zhekov, Richard McCray, Kazimierz J. Borkowski +2
We discuss the results from deep Chandra LETG observations of the supernova remnant 1987A (SNR 1987A). We find that a distribution of shocks, spanning the same range of velocities…