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HST Imaging of a z=1.55 Old Galaxy Group
We present high-resolution imaging in the rest-frame optical of the weak radio source LBDS53W091. Previous optical spectroscopy has shown that this... -
The Assembly of Galaxies from a Wide/Deep IR Survey
We show how deep multicolor imaging surveys may be used to trace the assembly of stellar mass in galaxies at different redshifts. Deep multicolor... -
Prospects with ALMA
The Atacama Large Millimeter Array will greatly enhance our ability to study the dynamics and masses of galaxies and their components at both low and... -
The Neutrino Burst from Supernovae and Neutrino Oscillations
Core-collapse driven supernovae are the most luminous neutrino source in the universe. If neutrinos have finite masses and convert into each other,... -
Search for the Companions of Galactic SNe Ia
The central regions of the remnants of Galactic SNe Ia have been examined for the presence of companion stars of the exploded supernovae. We present... -
Type Ia Supernovae: Progenitors and Diversities
A key question for supernova cosmology is whether the peak luminosities of Type Ia supernovae (SNe Ia) are sufficiently free from the effects of... -
Optical, Infrared, and Bolometric Light Curves of Type Ia Supernovae
The thermalized energy from the radioactive decays of 56Ni and 57Ni and their daughter nuclides power the light curves of supernovae near maximum... -
Evidence for Core Collapse in the Type Ib/c SN 1999ex
We present optical and infrared spectra of SN 1999ex, which are characterized by the lack of strong hydrogen lines, weak optical He I lines, and... -
Freeze-Out Effects in Hydrogen and Helium Lines of SN 1987A at the Early Photospheric Epoch
We have developed a time-dependent model of ionization, excitation and energy balance of the atmosphere of SN 1987A at the photospheric epoch to... -
Light Echoes in Type Ia Supernovae
Light echoes are a promising tool to probe the environment where SNe Ia explode and an independent source of information on the progenitor’s nature.... -
Search for Very High Energy $\gamma$ -Rays from the SNR 1006 with the HEGRA CT1 Air Imaging Cherenkov Telescope
The observation of $\gamma$ -rays from SuperNova Remnants (SNRs)... -
Galaxy Formation: Feedback from Supernovae
We simulate the collapse of a spherically symmetric proto-galaxy with a SPH/N-body code for a non-rotating, inhomogeneous initial density profile. We... -
Inflection Points on the Light Curves of Type Ia Supernovae
While the distribution of supernova absolute magnitudes at peak is often investigated, there was no systematic study of absolute light curve behavior... -
The Nearby Supernova Factory
The Nearby Supernova Factory is an international project dedicated to the study of the nearby thermonuclear (type Ia) supernovæ. Based upon the NEAT... -
The HETE Triggering Algorithm
The High Energy Transient Explorer uses a triggering algorithm for gammaray bursts that can achieve near the statistical limit by fitting to several... -
Progress on MARGIE, a Gamma-Ray Burst Ultra-long Duration Balloon Mission
We are designing the Minute of Arc Resolution Gamma-ray Imaging Experiment (MARGIE) as a 100 day Ultra Long Duration Balloon (ULDB) mission to: a)... -
Statistics of Faint Variable Sources for GRB OA Analyses
In GRB Optical Afterglows analyses, good knowledge and statistics of variable background sources is required. For statistical analyses of faint... -
Analysis of the BATSE GRB Light Curves
Different progenitors and physicalpro cesses could be at the origin of GRBs. New information about the properties of the gamma-ray emission can help... -
New Version of Optical Transient Monitor for BOOTES Project
We present controlling software for two wide field cameras of BOOTES station in this paper. Optical Transient Monitor (OTM) system is prepared for... -
A Gamma-Ray Bursts’ Fluence-Duration Correlation
We present an analysis indicating that there is a correlation between the fluences and the durations of gamma-ray bursts, and provide arguments that...