Browsing Research Output by Author "Abdo, A.A."
Now showing items 1-19 of 19
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Detection of the energetic pulsar PSR B1509-58 and its pulsar wind nebula in MSH 15-52 using the Fermi-Large Area Telescope
(IOP Publishing, 2010)We report the detection of high-energy γ-ray emission from the young and energetic pulsar PSR B1509 – 58 and its pulsar wind nebula (PWN) in the composite supernova remnant G320.4 – 1.2 (aka MSH 15 – 52). Using 1 yr of ... -
Discovery of pulsed γ-rays from PSR J0034-0534 with the Fermi Large Area Telescope: a case for co-located radio and γ-ray emission regions
(IOP Publishing, 2010)Millisecond pulsars (MSPs) have been firmly established as a class of γ-ray emitters via the detection of pulsations above 0.1 GeV from eight MSPs by the Fermi Large Area Telescope (LAT). Using 13 months of LAT data, ... -
Fermi detection of a luminous y-ray pulsar in a globular cluster
(AAAS, 2011)We report on the Fermi Large Area Telescope’s detection of γ-ray (>100 mega–electron volts) pulsations from pulsar J1823–3021A in the globular cluster NGC 6624 with high significance (∼7 σ). Its γ-ray luminosity, Lγ = (8.4 ... -
Fermi Large Area Telescope observations of PSR J1836+5925
(IOP Publishing, 2010)The discovery of the γ-ray pulsar PSR J1836+5925, powering the formerly unidentified EGRET source 3EG J1835+5918, was one of the early accomplishments of the Fermi Large Area Telescope (LAT). Sitting 25° off the Galactic ... -
Fermi Large Area Telescope observations of the Vela-X pulsar wind nebula
(IOP Publishing, 2010)We report on gamma-ray observations in the off-pulse window of the Vela pulsar PSR B0833–45 using 11 months of survey data from the Fermi Large Area Telescope (LAT). This pulsar is located in the 8° diameter Vela supernova ... -
Fermi-LAT discovery of GeV gamma-ray emission from the young supernova remnant Cassiopeia A.
(IOP Publishing, 2010)We report on the first detection of GeV high-energy gamma-ray emission from a young supernova remnant (SNR) with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. These observations reveal a source with ... -
Fermi-LAT observations of the Geminga pulsar
(IOP Publishing, 2010)We report on the Fermi-LAT observations of the Geminga pulsar, the second brightest non-variable GeV source in the γ-ray sky and the first example of a radio-quiet γ-ray pulsar. The observations cover one year, from the ... -
Fermi/LAT obeservations of LS 5039
(IOP Publishing, 2009)The first results from observations of the high-mass X-ray binary LS 5039 using the Fermi Gamma-ray Space Telescope data between 2008 August and 2009 June are presented. Our results indicate variability that is consistent ... -
The first Fermi Large Area Telescope catalog of gamma-ray pulsars
(IOP Publishing, 2010)The dramatic increase in the number of known gamma-ray pulsars since the launch of the Fermi Gamma-ray Space Telescope (formerly GLAST) offers the first opportunity to study a sizable population of these high-energy objects. ... -
Gamma-ray and radio properties of six pulsars detected by the Fermi Large Area Telescope
(IOP, 2010)We report the detection of pulsed γ-rays for PSRs J0631+1036, J0659+1414, J0742-2822, J1420-6048, J1509-5850, and J1718-3825 using the Large Area Telescope on board the Fermi Gamma-ray Space Telescope (formerly known as ... -
Gamma-Ray emission from the shell of supernova remnant W44 revealed by the Fermi LAT
(AAAS, 2010)Recent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to ~1015 electron volts. However, the nature of the particles that produce the emission remains ambiguous. We report ... -
Multiwavelength observations of the binary system PSR B1259−63/LS 2883 around the 2010–2011 periastron passage
(Oxford University Press, 2014)We report on broad multiwavelength observations of the 2010–2011 periastron passage of the γ -ray loud binary system PSR B1259−63. High-resolution interferometric radio observations establish extended radio emission ... -
Observation of supernova remnant IC 443 with the Fermi Large Area Telescope
(IOP Publishing, 2010)We report observation of the supernova remnant (SNR) IC 443 (G189.1+3.0) with the Fermi Gamma-ray Space Telescope Large Area Telescope (LAT) in the energy band between 200 MeV and 50 GeV. IC 443 is a shell-type SNR with ... -
Observations of the Large Magellanic Cloud with Fermi
(EDP Sciences, 2010)Context. The Large Magellanic Cloud (LMC) is to date the only normal external galaxy that has been detected in high-energy gamma rays. Highenergy gamma rays trace particle acceleration processes and gamma-ray observations ... -
A population of gamma-ray emitting globular clusters seen with the Fermi Large Area Telescope
(EDP Sciences, 2010)Context. Globular clusters with their large populations of millisecond pulsars (MSPs) are believed to be potential emitters of high-energy gamma-ray emission. The observation of this emission provides a powerful tool to ... -
A population of gamma-ray millisecond pulsars seen with the Fermi Large Area Telescope
(AAAS, 2009)Pulsars are born with subsecond spin periods and slow by electromagnetic braking for several tens of millions of years, when detectable radiation ceases. A second life can occur for neutron stars in binary systems. They ... -
PSR J1907+0602: a radio-faint gamma-ray pulsar powering a bright TeV pulsar wind nebula
(IOP Publishing, 2010)We present multiwavelength studies of the 106.6 ms γ-ray pulsar PSR J1907+06 near the TeV source MGRO J1908+06. Timing observations with Fermi result in a precise position determination for the pulsar of R.A. = 19h07m54fs7(2), ... -
The second Fermi Large Area Telescope catalog of gamma-ray pulsars
(IOP Publishing, 2013)This catalog summarizes 117 high-confidence ≥0.1 GeV gamma-ray pulsar detections using three years of data acquired by the Large Area Telescope (LAT) on the Fermi satellite. Half are neutron stars discovered using LAT data ... -
The Vela pulsar: results from the first year of Fermi LAT observations
(IOP Publishing, 2010)We report on analysis of timing and spectroscopy of the Vela pulsar using 11 months of observations with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. The intrinsic brightness of Vela at GeV energies ...
