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Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
(American Physical Society, 2014-01)
The center of the our Galaxy is a region where very energetic phenomena take place. In particular, powerful cosmic ray sources can be located in that region. The cosmic rays accelerated in these sources may interact with ...
Time delay between neutrinos and gamma-rays in short gamma-ray bursts
(Institute of Physics Publishing, 2019-02)
In this Letter we make an estimate of the time delay between signals, recorded at detectors on Earth, of neutrinos and photons originated in a short gamma-ray burst. We describe the geometry and dynamics of the system ...
Neutrino emission from gamma-ray bursts
(Asociación Argentina de Astronomía, 2015)
Gamma-ray bursts (GRBs) are the most violent and energetic events in theuniverse. Short GRBs seem to be the result of the final merger of two compactobjects, whereas long GRBs are probably associated with the gravitationalcollapse ...
The gamma-ray sky seen at X-ray energies. I. Searching for the connection between X-ray and gamma-rays in Fermi BL Lac objects
(EDP Sciences, 2019-10)
Context. BL Lac objects are an extreme type of active galactic nuclei (AGNs) that belong to the largest population of γ-ray sources: blazars. This class of AGNs shows a double-bumped spectral energy distribution that is ...
Gamma-rays from the compact colliding wind region in Cyg OB2 #5
(American Institute of Physics, 2012)
In this contribution we model the non-thermal emission (from radio toγ-rays) produced in the compact (and recently detected) collidingwind region in the multiple stellar system Cyg OB2 #5. We focus ourstudy on the detectability ...
The intriguing nature of the high-energy gamma ray source XSS J12270-4859
(EDP Sciences, 2010-06)
The nature of the hard X-ray source XSS J12270-4859 is still unclear. It was claimed to be a possible magnetic Cataclysmic Variable of the Intermediate Polar type from its optical spectrum and a possible 860 s X-ray ...
Possible Evidence for Cosmic-Ray Acceleration in the Type Ia SNR RCW 86: Spatial Correlation between TeV Gamma-Rays and Interstellar Atomic Protons
(IOP Publishing, 2019-04)
We present a detailed morphological study of TeV gamma-rays, synchrotron radiation, and interstellar gas in the young Type Ia supernova remnant (SNR) RCW 86. We find that the interstellar atomic gas shows good spatial ...
Composite mirror facets for ground based gamma ray astronomy
(Elsevier Science, 2013-06)
Composite mirrors for gamma-ray astronomy have been developed to fulfill the specifications required for the next generation of Cherenkov telescopes represented by CTA (Cherenkov Telescope Array). In addition to the basic ...
MeV-GeV γ-ray telescopes probing axino LSP/gravitino NLSP as dark matter in the μνSSM
(IOP Publishing, 2020-01)
Axino and gravitino are promising candidates to solve the dark matter (DM) problem in the framework of supersymmetry. In this work, we assume that the axino is the lightest supersymmetric particle (LSP), and therefore ...
Análisis de supernovas asociadas a estallidos de radiación gamma
(2020)
Desde hace dos décadas, se ha establecido una conexión entre estallidos de radiación gamma de larga duración (LGRB, cuya duración es mayor a 2 segundos) y supernovas (SNs) de tipo Ic-bl. Si bien, este vínculo ha sido ...