823 citations · 4.1k across the 23 of their papers we have counts for
25 papers
Probing the anomalous positron fraction origin with fully leptonic decaying gravitino dark matter candidates
Johannes Buchner, Edson Carquin, Marco A. Díaz +3
The flux of electron and positron cosmic rays measured by the space-based experiments PAMELA, AMS-02, CALET, DAMPE and Fermi-LAT shows an unexpected behaviour at high energies, in…
MeV-GeV -ray telescopes probing gravitino LSP with coexisting axino NLSP as dark matter in the SSM
German A. Gomez-Vargas, Daniel E. Lopez-Fogliani, Carlos Munoz +1
In -parity violating supersymmetry, the gravitino as the lightest supersymmetric particle (LSP) is a good candidate for dark matter, with the interesting characteristic to be de…
MeV-GeV -ray telescopes probing axino LSP/gravitino NLSP as dark matter in the SSM
German A. Gomez-Vargas, Daniel E. Lopez-Fogliani, Carlos Munoz +1
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 supersy…
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar
C. J. Clark, H. J. Pletsch, J. Wu +18
Millisecond pulsars (MSPs) are old neutron stars that spin hundreds of times per second and appear to pulsate as their emission beams cross our line of sight. To date, radio pulsat…
The Fermi Galactic Center GeV Excess and Implications for Dark Matter
LAT Collaboration
The region around the Galactic center (GC) is now well established to be brighter at energies of a few GeV than expected from conventional models of diffuse gamma-ray emission and…
The angular power spectrum of the diffuse gamma-ray emission as measured by the Fermi Large Area Telescope and constraints on its Dark Matter interpretation
Mattia Fornasa, Alessandro Cuoco, Jesus Zavala +8
The isotropic gamma-ray background arises from the contribution of unresolved sources, including members of confirmed source classes and proposed gamma-ray emitters such as the rad…
Sensitivity Projections for Dark Matter Searches with the Fermi Large Area Telescope
Eric Charles, Miguel Sanchez-Conde, Brandon Anderson +22
The nature of dark matter is a longstanding enigma of physics; it may consist of particles beyond the Standard Model that are still elusive to experiments. Among indirect search te…
Fermi-LAT Observations of the LIGO event GW150914
LAT collaboration
The Fermi Large Area Telescope (LAT) has an instantaneous field of view covering of the sky and completes a survey of the full sky every ~3 hours. It provides a continuo…
The Gamma-ray Afterglows of Tidal Disruption Events
Xian Chen, Germán Gómez-Vargas, James Guillochon
A star wandering too close to a supermassive black hole (SMBH) will be tidally disrupted. Previous studies of such "tidal disruption event" (TDE) mostly focus on the stellar debris…
The 1st Fermi Lat Supernova Remnant Catalog
Fabio Acero, Markus Ackermann, Marco Ajello +156
To uniformly determine the properties of supernova remnants (SNRs) at high energies, we have developed the first systematic survey at energies from 1 to 100 GeV using data from the…
Fermi-LAT Observations of High-Energy Gamma-Ray Emission Toward the Galactic Center
LAT Collaboration
The Fermi Large Area Telescope (LAT) has provided the most detailed view to date of the emission towards the Galactic centre (GC) in high-energy gamma-rays. This paper describes th…
Updated Search for Spectral Lines from Galactic Dark Matter Interactions with Pass 8 Data from the Fermi Large Area Telescope
LAT Collaboration
Dark matter in the Milky Way may annihilate directly into gamma rays, producing a monoenergetic spectral line. Therefore, detecting such a signature would be strong evidence for da…
Strong Optimized Conservative Fermi-LAT Constraints on Dark Matter Models from the Inclusive Photon Spectrum
Andrea Massari, Eder Izaguirre, Rouven Essig +3
We set conservative, robust constraints on the annihilation and decay of dark matter into various Standard Model final states under various assumptions about the distribution of th…
Confronting recent AMS-02 positron fraction and Fermi-LAT Extragalactic Gamma-Ray Background measurements with gravitino dark matter
Edson Carquin, Marco A. Diaz, German A. Gomez-Vargas +2
Recent positron flux fraction measurements in cosmic-rays (CR) made by the AMS-02 satellite confirm and extends the evidence on the existence of a new (yet unknown) source of high…
The spectrum of isotropic diffuse gamma-ray emission between 100 MeV and 820 GeV
The Fermi LAT collaboration, M. Ackermann, M. Ajello +142
The γ-ray sky can be decomposed into individually detected sources, diffuse emission attributed to the interactions of Galactic cosmic rays with gas and radiation fields, and a res…
Are we really seeing dark matter signals from the Milky Way center?
German A. Gomez-Vargas
The center of the Milky Way is one of the most interesting regions of the -ray sky because of the potential for indirect dark matter (DM) detection. It is also complicated due t…
The Spectrum and Morphology of the Fermi Bubbles
LAT Collaboration
The Fermi bubbles are two large structures in the gamma-ray sky extending to above and below the Galactic center. We analyze 50 months of Fermi Large Area Telescope data…
Searching for Dark Matter Annihilation in the Smith High-Velocity Cloud
Alex Drlica-Wagner, German A. Gomez-Vargas, John W. Hewitt +2
Recent observations suggest that some high-velocity clouds may be confined by massive dark matter halos. In particular, the proximity and proposed dark matter content of the Smith…
Search for 100 MeV to 10 GeV gamma-ray lines in the Fermi-LAT data and implications for gravitino dark matter in the SSM
Andrea Albert, German A. Gomez-Vargas, Michael Grefe +6
Dark matter decay or annihilation may produce monochromatic signals in the gamma-ray energy range. In this work we argue that there are strong theoretical motivations for studying…
Inferred cosmic-ray spectrum from -LAT -ray observations of the Earth's limb
LAT Collaboration, M. Ackermann, M. Ajello +150
Recent accurate measurements of cosmic-ray (CR) species by ATIC-2, CREAM, and PAMELA reveal an unexpected hardening in the proton and He spectra above a few hundred GeV, a gradual…
Dark Matter Constraints from Observations of 25 Milky Way Satellite Galaxies with the Fermi Large Area Telescope
LAT Collaboration, M. Ackermann, A. Albert +119
The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-dominated objects known. Due to their proximity, high dark matter content, and lack of ast…
Constraints on WIMP Annihilation for Contracted Dark Matter in the Inner Galaxy with the Fermi-LAT
German A. Gomez-Vargas, Miguel A. Sanchez-Conde, Ji-Haeng Huh +7
We derive constraints on parameters of generic dark matter candidates by comparing theoretical predictions with the gamma-ray emission observed by the Fermi-LAT from the region aro…
The First Fermi-LAT Catalog of Sources Above 10 GeV
LAT Collaboration
We present a catalog of gamma-ray sources at energies above 10 GeV based on data from the Large Area Telescope (LAT) accumulated during the first three years of the Fermi Gamma-ray…
Search for Gamma-ray Spectral Lines with the Fermi Large Area Telescope and Dark Matter Implications
LAT Collaboration
Weakly Interacting Massive Particles (WIMPs) are a theoretical class of particles that are excellent dark matter candidates. WIMP annihilation or decay may produce essentially mono…