Search Publications
Observational constraints on Gauss-Bonnet cosmology
Benetti, Micol; Alcaniz, Jailson S.; Capozziello, Salvatore +2 more
We analyze a fully geometric approach to dark energy in the framework of F(R,𝒢) theories of gravity, where R is the Ricci curvature scalar and 𝒢 is the Gauss-Bonnet topological invariant. The latter invariant naturally exhausts, together with R, the whole curvature content related to curvature invariants coming from the Riemann tensor. In particul…
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…
Foreground contribution to the inferred cosmological parameters from Planck
Vincent, Aaron C.; Wibig, Tadeusz; Wolfendale, Arnold W.
Previous analyses of cosmic microwave background (CMB) measurements [T. Wibig and A. W. Wolfendale, Mon. Not. R. Astron. Soc. 360 (2005) 236, arXiv:astro-ph/0409397; Mon. Not. R. Astron. Soc. 448 (2015) 1030, arXiv:1507.0677.] have revealed contamination by areas of high cosmic ray activity in the Milky Way. Here, we update studies, looking at the…