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132. Constraints on the Galactic Dark Matter signal from the Fermi-LAT measurement of the diffuse gamma-ray emissionGabrijela Zaharijas, 2012, published scientific conference contribution Abstract: We study diffuse gamma-ray emission at intermediate Galactic latitudes measured by the Fermi Large Area Telescope with the aim of searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal, constraints are presented. We set both, conservative dark matter limits requiring that the dark matter signal does not exceed the observed diffuse gamma-ray emission and limits derived based on modeling the foreground astrophysical diffuse emission. Uncertainties in several parameters which characterize conventional astrophysical emission are taken into account using a profile likelihood formalism. The resulting limits impact the range of particle masses over which dark matter thermal production in the early Universe is possible, and challenge the interpretation of the PAMELA/Fermi-LAT cosmic ray anomalies as annihilation of dark matter.
Keywords: gamma rays, Galactic diffuse emission, dark matter serach
Published in RUNG: 03.05.2016; Views: 5322; Downloads: 0
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135. Galactic Dark Matter signal and the Fermi-LAT measurement of the diffuse gamma-ray emissionGabrijela Zaharijas, published scientific conference contribution Abstract: We study diffuse gamma-ray emission at intermediate Galactic latitudes measured by the Fermi LAT with the aim of searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal, constraints are presented. We present and improve upon conservative dark matter limits obtained with no modeling of the foreground astrophysical diffuse emission. We do so, by taking into account uncertainties in several parameters which characterize conventional astrophysical emission and using a profile likelihood formalism. The resulting limits impact the range of particle masses over which dark matter thermal production in the early Universe is possible, and challenge the interpretation of the PAMELA/Fermi-LAT cosmic ray anomalies as annihilation of dark matter.
Keywords: Dark matter, high-energy gamma rays
Published in RUNG: 21.03.2016; Views: 5333; Downloads: 0
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136. Prospects On Testing Lorentz Invariance Violation With The Cherenkov Telescope ArrayM. K. Daniel, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Cherenkov Telescope Array (CTA), Lorentz Invariance Violation (LIV), Very High Energy (VHE) gamma-rays, fundamental physics probes, Active Galactic Nuclei (AGN), Gamma Ray Bursts (GRBs), pulsars
Published in RUNG: 14.03.2016; Views: 5477; Downloads: 226
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137. Prospects for Gamma-Ray Bursts detection by the Cherenkov Telescope ArrayE. Bissaldi, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Cherenkov Telescope Array, Gamma-Ray Bursts, very-high energy (VHE) gamma-ray emission, observational strategy optimization
Published in RUNG: 11.03.2016; Views: 5704; Downloads: 216
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138. Redshift measurement of Fermi Blazars for the Cherenkov Telescope ArrayP. Goldoni, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Cherenkov Telescope Array, very-high energy gamma-ray emission, active galactic nuclei, blazars, blazar redshift measurements, observational strategy optimization
Published in RUNG: 11.03.2016; Views: 5780; Downloads: 243
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139. Creating a high-resolution picture of Cygnus with the Cherenkov Telescope ArrayAmanda Weinstein, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Cherenkov Telescope Array (CTA), very-high energy (VHE) gamma-ray emission, star-forming regions, the Cygnus region, observational strategy optimization
Published in RUNG: 11.03.2016; Views: 5627; Downloads: 300
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140. Simulating Cherenkov Telescope Array observation of RX J1713.7-3946T. Nakamori, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Cherenkov Telescope Array (CTA), supernova remnants, very high-energy (VHE) gamma-ray emission, RX J1713.7–3946, Monte Carlo simulations
Published in RUNG: 11.03.2016; Views: 5852; Downloads: 232
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