Pulsars, transients and relativistic astrophysics

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A very faint core-collapse supernova in M85

(2007)

Authors:

A Pastorello, M Della Valle, SJ Smartt, L Zampieri, S Benetti, E Cappellaro, P Mazzali, F Patat, S Spiro, M Turatto, S Valenti
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Distortion of gravitational-wave packets due to their self-gravity

Physical Review D American Physical Society (APS) 76:8 (2007) 084022

Authors:

Bence Kocsis, Abraham Loeb
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Measuring the accretion rate and kinetic luminosity functions of supermassive black holes

(2007)

Authors:

EG Koerding, S Jester, R Fender
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SN 1996cr: Confirmation of a Luminous Type IIn Supernova in the Circinus Galaxy

AIP Conference Proceedings AIP Publishing 937:1 (2007) 427-429

Authors:

FE Bauer, S Smartt, S Immler, WN Brandt, KW Weiler, Stefan Immler, Kurt Weiler

Abstract:

We have recently confirmed SN 1996cr as a late‐time type IIn supernova (SN) via VLT spectroscopy and isolated its explosion date to ∼1 yr using archival optical imaging. We briefly touch upon here the wealth of optical, X‐ray, and radio archival observations available for this enigmatic source. Due to its relative proximity (3.8±0.6 Mpc), SN 1996cr ranks among the brightest X‐ray and radio SNe ever detected and, as such, may offer powerful insights into the structure and composition of type IIn SNe. We also find that SN 1996cr is matched to GRB 4B 960202 at a 2–3σ confidence level, making it perhaps the third GRB to be significantly associated with a type II SN. We speculate on whether SN 1996cr could be an off‐axis or “failed” GRB.
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Radio and X-ray study of Cygnus a

Astrophysics and Space Science 311:1-3 (2007) 323-327

Authors:

KC Steenbrugge, KM Blundell

Abstract:

We present a comparative analysis of 5 GHz VLA and 200 ks Chandra ACIS-I image. In the 5 GHz image the familiar jet and much weaker counterjet are seen, which bend as the jet propagates towards the hotspots. Furthermore, where the lobe detected in 5 GHz emission starts to interact with the jet, we see that the jet "threads". In the 0.2-10 keV X-ray image we do not detect the jet, but do detect a relic of the counterjet. © 2007 Springer Science+Business Media B.V.
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