65 citations · 662 across the 31 of their papers we have counts for
24 papers · 1 filter
Fermi-LAT View on Three Ultra-high-energy 1LHAASO Sources in the Region
Linjie Liu, Xian Hou, Pierrick Martin +1
Using more than 17 yr of Fermi-LAT data, we performed a detailed investigation of the complex region, which encompasses the three ultra-high-energy source…
Probing the -ray Emission Origin of Two Star-forming Galaxies NGC 2403 and NGC 3424 with the Fermi-LAT
Linjie Liu, Wei Zhang, Xian Hou +1
Star-forming galaxies (SFGs) are a subclass of -ray emitters and a correlation between their -ray luminosity () and the total infrared (IR) luminosity ($L_{\rm IR}…
Chasing Gravitational Waves with the Cherenkov Telescope Array
Jarred Gershon Green, Alessandro Carosi, Lara Nava +563
The detection of gravitational waves from a binary neutron star merger by Advanced LIGO and Advanced Virgo (GW170817), along with the discovery of the electromagnetic counterparts…
Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array
Guillaume Grolleron, Josefa Becerra González, Jonathan Biteau +13
Blazars are active galactic nuclei (AGN) with a relativistic jet oriented toward the observer. This jet is composed of accelerated particles which can display emission over the ent…
Dark matter searches in dwarf spheroidal galaxies with the Cherenkov Telescope Array
Francesco Gabriele Saturni, Michele Doro, Aldo Morselli +1
Dark matter (DM) is one of the major components in the Universe. However, at present its existence is still only inferred through indirect astronomical observations. DM particles c…
Detecting and characterizing pulsar haloes with the Cherenkov Telescope Array
Christopher Eckner, Veronika Vodeb, Pierrick Martin +2
The recently identified source class of pulsar haloes may be numerous and bright enough in the TeV range to constitute a large fraction of the sources that will be observed with th…
Population synthesis of pulsar wind nebulae and pulsar halos in the Milky Way -- Predicted contributions to the very-high-energy sky
Pierrick Martin, Luigi Tibaldo, Alexandre Marcowith +1
The discovery of extended gamma-ray emission toward a number of middle-aged pulsars suggests the possibility of long-lived particle confinement beyond the classical pulsar wind neb…
Are pulsar halos rare ?
Pierrick Martin, Alexandre Marcowith, Luigi Tibaldo
Extended gamma-ray emission, interpreted as halos formed by the inverse-Compton scattering of ambient photons by electron-positron pairs, is observed toward a number of middle-aged…
Positron Annihilation in the Galaxy
Carolyn A. Kierans, John F. Beacom, Steve Boggs +27
The 511 keV line from positron annihilation in the Galaxy was the first -ray line detected to originate from outside our solar system. Going into the fifth decade since the disc…
Millisecond pulsar origin of the Galactic center excess and extended gamma-ray emission from Andromeda - a closer look
Christopher Eckner, Xian Hou, Pasquale D. Serpico +8
A new measurement of a spatially extended gamma-ray signal from the center of the Andromeda galaxy (M31) has been recently published by the Fermi-LAT collaboration, reporting that…
Gamma-ray emission from internal shocks in novae
Pierrick Martin, Guillaume Dubus, Pierre Jean +2
Gamma-ray emission at energies >100MeV has been detected from nine novae using the Fermi-LAT, and it can be explained by particle acceleration at shocks in these systems. Eight out…
Sizing up the population of gamma-ray binaries
Guillaume Dubus, Nicolas Guillard, Pierre-Olivier Petrucci +1
Gamma-ray binaries are thought to be composed of a young pulsar in orbit around a massive O or Be star, with their gamma-ray emission powered by pulsar spindown. The number of such…
Search for Gamma-ray Emission from Dark Matter Annihilation in the Small Magellanic Cloud with the Fermi Large Area Telescope
Regina Caputo, Matthew R. Buckley, Pierrick Martin +5
The Small Magellanic Cloud (SMC) is the second-largest satellite galaxy of the Milky Way and is only 60 kpc away. As a nearby, massive, and dense object with relatively low astroph…
Discovery of a Spin-Down State Change in the LMC Pulsar B0540-69
F. E. Marshall, L. Guillemot, A. K. Harding +2
We report the discovery of a large, sudden, and persistent increase in the spin-down rate of B0540-69, a young pulsar in the Large Magellanic Cloud, using observations from the Swi…
Search for Gamma-ray Emission from Dark Matter Annihilation in the Large Magellanic Cloud with the Fermi Large Area Telescope
Matthew R. Buckley, Eric Charles, Jennifer M. Gaskins +4
At a distance of 50 kpc and with a dark matter mass of M, the Large Magellanic Cloud (LMC) is a natural target for indirect dark matter searches. We use fiv…
Monte Carlo modelling of the propagation and annihilation of nucleosynthesis positrons in the Galaxy
A. Alexis, P. Jean, P. Martin +1
We want to estimate whether the positrons produced by the beta plus decay of 26Al, 44Ti and 56Ni synthesised in massive stars and supernovae are sufficient to explain the 511 keV a…
Interstellar gamma-ray emission from cosmic rays in star-forming galaxies
Pierrick Martin
Fermi/LAT observations of star-forming galaxies in the ~0.1-100GeV range have made possible a first population study. Evidence was found for a correlation between gamma-ray luminos…
SPI Measurements of Nucleosynthesis Gamma-Rays
Roland Diehl, Frauke Alexander, Martin Krause +4
Studies based on the gamma-ray lines from radioactive decay of unstable isotopes produced in massive-star and supernova nucleosynthesis have been among INTEGRAL's prominent science…
Particle acceleration and non-thermal emission during the V407 Cygni nova outburst
Pierrick Martin, Guillaume Dubus
On March 2010, the symbiotic binary V407 Cyg erupted as a result of a nova explosion. The event gave rise to a two-week long burst of >100MeV gamma-rays detected by Fermi/LAT, a un…
Galactic annihilation emission from nucleosynthesis positrons
P. Martin, A. W. Strong, P. Jean +2
The Galaxy hosts a widespread population of low-energy positrons revealed by successive generations of gamma-ray telescopes through a bright annihilation emission from the bulge re…
Annihilation emission from young supernova remnants
Pierrick Martin, Jacco Vink, Sarka Jiraskova +2
A promising source of the positrons that contribute through annihilation to the diffuse Galactic 511keV emission is the beta-decay of unstable nuclei like 56Ni and 44Ti synthesised…
Predicted gamma-ray line emission from the Cygnus complex
Pierrick Martin, Jürgen Knödlseder, Georges Meynet +1
The Cygnus region harbours a huge complex of massive stars at a distance of 1.0-2.0kpc from us. About 170 O stars are distributed over several OB associations, among which the Cyg…
New estimates of the gamma-ray line emission of the Cygnus region from INTEGRAL/SPI observations
Pierrick Martin, Jürgen Knödlseder, Roland Diehl +1
The Cygnus region harbours a huge complex of massive stars at a distance of 1.0-2.0kpc from us. About 170 O stars are distributed over several OB associations, among which the Cyg…
Constraints on the kinematics of the 44Ti ejecta of Cassiopeia A from INTEGRAL/SPI
Pierrick Martin, Jürgen Knödlseder, Jacco Vink +2
The medium-lived 44Ti isotope is synthesised by explosive Si-burning in core-collapse supernovae. It is extremely sensitive to the dynamics of the explosion and therefore can be us…