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13 papers · 2 filters
Predictions for signatures of the quark-nova in superluminous supernovae
Rachid Ouyed, Denis Leahy, Prashanth Jaikumar
[Abridged] Superluminous Supernovae (SN2006gy, SN2005gj, SN2005ap, SN2008fz, SN2003ma) have been a challenge to explain by standard models. We present an alternative scenario invol…
Constraining a possible time-variation of the gravitational constant through "gravitochemical heating" of neutron stars
Andreas Reisenegger, Paula Jofré, Rodrigo Fernández
A hypothetical time-variation of the gravitational constant would make neutron stars expand or contract, so the matter in their interiors would depart from beta equilibrium. Th…
AKARI and BLAST Observations of the Cassiopeia A Supernova Remnant and Surrounding Interstellar Medium
B. Sibthorpe, P. A. R. Ade, J. J. Bock +30
We use new large area far infrared maps ranging from 65 - 500 microns obtained with the AKARI and the Balloon-borne Large Aperture Submillimeter Telescope (BLAST) missions to chara…
Constraining the Spin-down of the Nearby Isolated Neutron Star RX J0806.4-4123, and Implications for the Population of Nearby Neutron Stars
D. L. Kaplan, M. H. van Kerkwijk
The nearby isolated neutron stars are a group of seven relatively slowly rotating neutron stars that show thermal X-ray spectra, most with broad absorption features. They are inter…
Infrared Studies of Molecular Shocks in the Supernova Remnant HB 21: II. Thermal Admixture of Shocked H Gas in the South
Jong-Ho Shinn, Bon-Chul Koo, Michael G. Burton +2
We present near- and mid-infrared observations on the shock-cloud interaction region in the southern part of the supernova remnant HB 21, performed with the InfraRed Camera (IRC) a…
MAGIC Gamma-ray Telescope Observation of the Perseus Cluster of Galaxies: implications for cosmic rays, dark matter, and NGC1275
The MAGIC Collaboration, J. Aleksić, L. A. Antonelli +152
The Perseus galaxy cluster was observed by the MAGIC Cherenkov telescope for a total effective time of 24.4 hr during 2008 November and December. The resulting upper limits on the…