Recent results, the present status and the perspectives of high energy gamma-ray astronomy are described. Since the satellite observations by the Compton Gamma Ray Observatory and its precursor missions have been reviewed extensively, emphasis is on the results from the ground-based gamma-ray telescopes. They concern the physics of Pulsar Nebulae, Supernova Remnants in their assumed role as the...

Major advances in observational astronomy over the past 20 years have revolutionized our view of cosmic history, transforming our understanding of how the hot, smooth, early universe evolved into the complex and beautiful universe of stars and galaxies in which we now live. I describe how astronomers have used a range of complementary techniques to map out the rise and fall of star formation ov...

the islamic astronomy including the persian astronomy was thoroughly introduced into india from the 14th century ad or so. firstly, the astrolabe was introduced at the time of f?r?z sh?h tughluk?, and a sanskrit work entitled yantra-r?ja (1370 ad) was composed by mahendra s?ri. at that time, some sanskrit astronomical (or astrological) works were also translated into persian. the astrolabe beca...

This manuscript is the written version of the material I attempted to cover at “Critical Dialogues in Cosmology”. My position is that although BBN is inevitable in an expanding universe filled with radiation and baryons, at present there is a conflict between the abundances of the light nuclides predicted by standard, big bang nucleosynthesis (SBBN) and those inferred from current observational...

here has been an unprecedented and continuing growth in the volume, quality , and complexity of astronomical data sets over the past few years, mainly through large digital sky surveys. Virtual Observatory (VO) concept represents a scientific and technological framework needed to cope with this data flood. We review some of the applied statistics and computing challenges posed by the analysis o...

On the basis of almost 2000 b, y photoelectric observations of θ Tucanae collected in an international campaign at two sites and of almost 1500 v, u observations collected at one site, observational guidelines for mode identification have been searched. Not only the generally used plane (Ab−y/Ay versus φb−y φy) but each combination of the nonadiabatic observables including amplitude ratio vs. a...

1130-1300: Optical I : Image Processing Pipelines (venue: Chandrasekhar Auditorium) Chair: R. Srianand Bhuvnesh Jain (U. Pennsylvania): Overview of the Large Synoptic Survey Telescope (15) Robert Lupton (Princeton U.): Optical scientific pipelines: the intestinal flora, and how not to reinvent it again (35) Adam Bolton (U. Utah): Beyond the Boxcar: Modern Calibration and Extraction of Optical S...