ar X iv : 0 80 9 . 12 45 v 2 [ as tr o - ph ] 1 1 Se p 20 08 Massive stars in their death - throes

ar X iv : 0 80 9 . 12 45 v 1 [ as tr o - ph ] 7 S ep 2 00 8 Massive stars in their death - throes

The study of the stars that explode as supernovae used to be a forensic study, working backwards from the remnants of the star. This changed in 1987 when the first progenitor star was identified in pre-explosion images. Currently there are 8 detected progenitors with another 21 non-detections, for which only a limit on the pre-explosion luminosity can be placed. This new avenue of supernova res...

ar X iv : 0 80 1 . 35 64 v 1 [ as tr o - ph ] 2 3 Ja n 20 08 Local Phase Space - Shaped by Chaos ?

ar X iv : 0 80 9 . 50 92 v 1 [ he p - ph ] 2 9 Se p 20 08 Aspects of Unparticle Physics Arvind Rajaraman

We review some theoretical and experimental issues in unparticle physics, focusing mainly on collider signatures.

ar X iv : 0 80 9 . 33 19 v 1 [ as tr o - ph ] 1 9 Se p 20 08 Development of a large area gas photomultiplier with GEM / μ PIC

We are developing a new photon detector with micro pattern gaseous detectors. A semitransparent CsI photocathode is combined with 10cm×10cm GEM/μPIC for the first prototype which is aimed for the large liquid Xe detectors. Using Ar+C2H6 (10%) gas, we achieved the gas gain of 10 which is enough to detect single photoelectron. We, then, irradiated UV photons from a newly developed solid scintilla...

ar X iv : 0 70 9 . 45 12 v 1 [ as tr o - ph ] 2 8 Se p 20 07 X - ray Spectroscopy of the 2006 Outburst of RS Oph

We present the X-ray grating spectra of the recurrent nova RS Ophiuchi during its 2006 outburst, obtained with the XMM-Newton and Chandra observatories. Two weeks after optical maximum, the X-ray spectrum was hard and dominated by emission lines of H-like and He-like ions. The X-ray luminosity was 2.4 × 10 erg cm in the 0.33-10 keV range. The spectra indicate a collisionally