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Theoretical Implications of the Gamma-Ray Burst-Supernova Connection
Although observations of circumstellar shock interactions around supernovae are generally consistent with a... -
The Multiband Photometry of GRB Host Galaxies: Comparison with the Spectral Energy Distributions of Nearby Galaxies and Theoretical Modeling
We present one of the results of BV RI photometry of the hosts of GRB for the host galaxy of GRB 970508 and the theoretical modeling of its continuum... -
Early Afterglows as Probes for the Reionization Epoch
The nature of Gamma-Ray Burst (GRB) progenitors is still a debated issue, but consensus is growing on the association of GRBs with massive stars.... -
Host Galaxies as Gamma-Ray Burst Distance Indicators
We calculate the distributions of the total burst energy, the peak luminosity and the X-ray afterglow energy using burst observations and distances... -
Observational Consequences of $e^\pm$ Pair Creation in $\gamma$ -Ray Bursts
Physical models for $\gamma$ -ray emission from a relativistic... -
Interaction between Internal Shocks and the Reverse Shock for a GRB in a Dense Stellar Wind
In the most popular scenario for GRBs a relativistic shell is produced by a compact central source (collapsar, BH + WD, BH + NS or NS + NS merger)... -
GRB Synchrotron-Self-Compton Emission Generated by Self-Consistent Electron Distribution
The spectra of Gamma-Ray Burst (GRB) emission have been investigated theoretically by a number of authors (e.g., [1-3]) for different versions of a... -
New Results on the Temporal Structure of GRBs
We analyze the temporal structure of long ( T 90 > 2sec) and short ( T... -
Ultra Efficient Internal Shocks
We define ultra efficient internal shocks as those in which the fraction of emitted energy is larger than the fraction of energy given to the... -
The INTEGRAL Burst Alert System
We describe the INTEGRAL Burst Alert System (IBAS): the automatic software developed at the INTEGRAL Science Data Center to allow the rapid... -
Beyond the Standard Model
Some possible directions for physics beyond the Standard Model are reviewed, with particular emphasis on topics relevant to astrophysics and... -
Cosmic Microwave Background Fluctuations
Several experiments have recently detected very low contrast, sub-horizon scale structures in the Cosmic Microwave Background (CMB). In the current... -
Evidence for an Accelerating Universe from Type Ia Supernovae
The expansion history of the universe is revealed by measurements of cosmic distances. Since the various energy components in a Friedmann universe... -
Constraining Cosmological Parameters with Observations of Galaxy Clusters
Galaxy clusters are ideal probes of the large-scale structure of the Universe and for the tests of cosmological models. Based on the REFLEX redshift... -
The NASA - MIDEX Swift Mission
The Gamma Ray Bursts as powerful extragalactic sources are one of the major discovery which occurred in the last decade thanks to the BATSE satellite... -
Fundamental Physics with Space Experiments
I review a category of experiments in fundamental physics that need space as a laboratory. All these experiments have in common the need of a very... -
Connections Between Quantum Theory and Cosmology: An Unconventional View
Usually cosmology is seen as a special part of general relativity. Quantum theory is normally understood as responsible for the small and the very... -
A New Unifying Field Spacetime Structure
Analysis of the data and equations for the solar system and the hydrogen atom identified a unifying spacetime structure intrinsic to the fields. The... -
High Energy Photon Flux Prediction from Neutralino Annihilation in M 31
Considering a NFW halo of M 31 made of neutralinos, predictions for the... -
Cosmic Shear from STIS Pure Parallels - II. Analysis
The tidal gravitational field due to the inhomogeneous distribution of matter in the Universe causes the distortion of light bundles from distant...