Search Publications

Precursors of short gamma-ray bursts detected by the INTEGRAL observatory

Minaev, Pavel; Pozanenko, Alexei; Molkov, Sergei

We have analyzed the light curves of 527 short gamma-ray bursts (GRBs) registered by the SPI-ACS, SPI and IBIS/ISGRI experiments of INTEGRAL observatory totally to search for precursors. Both the light curves of each 527 individual burst and the averaged light curve of 372 brightest SPI-ACS bursts have been analyzed. In a few cases, we have found …

VHE observations of binary systems performed with the MAGIC telescopes

Torres, Diego F.; Zanin, Roberta; Casares, Jorge +11 more

The improvement on the Imaging Air Cherenkov Technique (IACT) led to the discovery of a new type of sources that can emit at very high energies: the gamma-ray binaries. Only six systems are part of this exclusive class. We summarize the latest results from the observations performed with the MAGIC telescopes on different systems as the gamma-ray b…

Light Superconducting Strings in the Galaxy

Ferrer, Francesc; Vachaspati, Tanmay

Observations of the Milky Way by the SPI/INTEGRAL satellite have confirmed the presence of a strong 511 keV gamma ray line emission from the bulge, which requires an intense source of positrons in the galactic center. These observations are hard to account for by conventional astrophysical scenarios, whereas other proposals, such as light DM, face…

Supernova Explosions, 511 keV Photons, Gamma Ray Bursts and Mirror Matter

Foot, R.; Silagadze, Z. K.

There are three astroparticle physics puzzles which fire the imagination: the origin of the "Great Positron Producer" in the galactic bulge, the nature of the gamma-ray bursts central engine and the mechanism of supernova explosions. We show that the mirror matter model has the potential to solve all three of these puzzles in one beautifully simpl…