ar X iv : a st ro - p h / 02 07 25 5 v 1 1 1 Ju l 2 00 2 In JAAVSO 30 , 23 ( 2001 ) Hot Flashes on Miras

ar X iv : a st ro - p h / 02 07 41 9 v 1 1 9 Ju l 2 00 2 Rarefaction Shocks , Shock Errors and Low Order of Accuracy in ZEUS

ar X iv : a st ro - p h / 04 07 23 2 v 1 1 2 Ju l 2 00 4 B The Saas Fee Lectures on Strong Gravitational Lensing

ar X iv : a st ro - p h / 02 10 50 5 v 1 2 3 O ct 2 00 2 Evolution of the symbiotic nova RX Puppis

We present and discuss a hundred year history of activity of the hot component of RX Pup based on optical photometry and spectroscopy. The outburst evolution of RX Pup resembles that of other symbiotic novae whereas at quiescence the hot component shows activity (high and low activity states) resembling that of symbiotic recurrent novae T CrB and RS Oph.

ar X iv : a st ro - p h / 01 03 25 5 v 1 1 6 M ar 2 00 1 Construction and Preliminary Application of the Variability →

We present a possible Cepheid-like luminosity estimator for the longduration gamma-ray bursts based on the variability of their light curves. We also present a preliminary application of this luminosity estimator to 907 long-duration bursts from the BATSE catalog.

ar X iv : a st ro - p h / 01 07 35 5 v 1 1 8 Ju l 2 00 1 Global star formation history : A Local Group perspective

The global star formation rate (SFR) density is estimated from the star formation histories (SFHs) of Local Group galaxies. This is found to be broadly consistent with estimates of the global SFH from existing redshift surveys for two favoured cosmologies. It also provides additional evidence for a relatively constant global SFR density at high redshift (z > 1).