output
19922026
most citedObservation of Gravitational Waves from a Binary Black Hole Merger

14.2k citations

Showing 2012 · astro-ph.HEShow all

24 papers · 2 filters

astro-ph.HE2012★ 99 cited

Multiwavelength observations of GRB 110731A: GeV emission from onset to afterglow

LAT Collaboration, GBM Collaboration, Swift Collaboration +2

We report on the multiwavelength observations of the bright, long gamma-ray burst \GRB, by the \Fermi and \Swift observatories, and by the MOA and GROND optical telescopes. The ana…

astro-ph.HE2012★ 115 cited

Binary Millisecond Pulsar Discovery via Gamma-Ray Pulsations

H. J. Pletsch, L. Guillemot, H. Fehrmann +150

Millisecond pulsars, old neutron stars spun-up by accreting matter from a companion star, can reach high rotation rates of hundreds of revolutions per second. Until now, all such "…

astro-ph.HE2012★ 16 cited

Observations of the magnetars 4U 0142+61 and 1E 2259+586 with the MAGIC telescopes

The MAGIC Collaboration, J. Aleksić, L. A. Antonelli +153

Magnetars are an extreme, highly magnetized class of isolated neutron stars whose large X-ray luminosity is believed to be driven by their high magnetic field. In this work we stud…

astro-ph.HE2012★ 39 cited

The Simultaneous Low State Spectral Energy Distribution of 1ES 2344+514 from Radio to Very High Energies

MAGIC Collaboration, J. Aleksić, L. A. Antonelli +191

[Abridged] Context. To construct and interpret the spectral energy distribution (SED) of BL Lacertae objects, simultaneous broad-band observations are mandatory. Aims. We present t…

astro-ph.HE2012★ 201 cited

GRB110721A: An extreme peak energy and signatures of the photosphere

The Fermi LAT Collaboration, the GBM Collaboration, A. Pe'er

GRB110721A was observed by the Fermi Gamma-ray Space Telescope using its two instruments the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM). The burst consisted o…

astro-ph.HE2012★ 71 cited

Fermi LAT study of cosmic-rays and the interstellar medium in nearby molecular clouds

LAT collaboration

We report an analysis of the interstellar gamma-ray emission from the Chamaeleon, R Coronae Australis (R CrA), and Cepheus and Polaris flare regions with the Fermi Large Area Teles…

astro-ph.HE2012★ 65 cited

Multi-wavelength observations of blazar AO 0235+164 in the 2008-2009 flaring state

M. Ackermann, M. Ajello, J. Ballet +208

The blazar AO 0235+164 (z = 0.94) has been one of the most active objects observed by Fermi Large Area Telescope (LAT) since its launch in Summer 2008. In addition to the continuou…

astro-ph.HE2012★ 42 cited

MAGIC observations of the giant radio galaxy M87 in a low-emission state between 2005 and 2007

MAGIC Collaboration, J. Aleksić, E. A. Alvarez +155

We present the results of a long M87 monitoring campaign in very high energy -rays with the MAGIC-I Cherenkov telescope. We aim to model the persistent non-thermal jet emission…

astro-ph.HE2012★ 13 cited

High zenith angle observations of PKS 2155-304 with the MAGIC-I telescope

The MAGIC Collaboration, J. Aleksić, L. A. Antonelli +153

The high frequency peaked BL Lac PKS 2155-304 with a redshift of z=0.116 was discovered in 1997 in the very high energy (VHE, E >100GeV) gamma-ray range by the University of Durham…

astro-ph.HE2012★ 47 cited

Gamma-ray observations of the Orion Molecular Clouds with the Fermi Large Area Telescope

M. Ackermann, M. Ajello, A. Allafort +142

We report on the gamma-ray observations of giant molecular clouds Orion A and B with the Large Area Telescope (LAT) on-board the Fermi Gamma-ray Space Telescope. The gamma-ray emis…

astro-ph.HE2012★ 394 cited

GeV Observations of Star-forming Galaxies with \textit{Fermi} LAT

Fermi LAT Collaboration, M. Ackermann, M. Ajello +127

Recent detections of the starburst galaxies M82 and NGC 253 by gamma-ray telescopes suggest that galaxies rapidly forming massive stars are more luminous at gamma-ray energies comp…

astro-ph.HE2012★ 239 cited

Fermi LAT Search for Dark Matter in Gamma-ray Lines and the Inclusive Photon Spectrum

LAT Collaboration, M. Ackermann, M. Ajello +117

Dark matter particle annihilation or decay can produce monochromatic gamma-ray lines and contribute to the diffuse gamma-ray background. Flux upper limits are presented for gamma-r…

astro-ph.HE2012★ 48 cited

A First Search for coincident Gravitational Waves and High Energy Neutrinos using LIGO, Virgo and ANTARES data from 2007

The ANTARES Collaboration, the LIGO Scientific Collaboration, the Virgo Collaboration +959

We present the results of the first search for gravitational wave bursts associated with high energy neutrinos. Together, these messengers could reveal new, hidden sources that are…

astro-ph.HE2012★ 127 cited

Search for gravitational waves associated with gamma-ray bursts during LIGO science run 6 and Virgo science runs 2 and 3

The LIGO Scientific Collaboration, Virgo Collaboration, J. Abadie +807

We present the results of a search for gravitational waves associated with 154 gamma-ray bursts (GRBs) that were detected by satellite-based gamma-ray experiments in 2009-2010, dur…

astro-ph.HE2012★ 71 cited

Swift follow-up observations of candidate gravitational-wave transient events

P. A. Evans, J. K. Fridriksson, N. Gehrels +813

We present the first multi-wavelength follow-up observations of two candidate gravitational-wave (GW) transient events recorded by LIGO and Virgo in their 2009-2010 science run. Th…

astro-ph.HE2012★ 27 cited

Detection of VHE γ-rays from HESS J0632+057 during the 2011 February X-ray outburst with the MAGIC Telescopes

The MAGIC Collaboration, J. Aleksić, E. A. Alvarez +158

The very high energy (VHE) γ-ray source HESS J0632+057 has recently been confirmed to be a γ-ray binary. The optical counterpart is the Be star MWC 148, and a compact object of unk…

astro-ph.HE2012★ 67 cited

Discovery of VHE gamma-rays from the blazar 1ES 1215+303 with the MAGIC Telescopes and simultaneous multi-wavelength observations

MAGIC Collaboration, J. Aleksić, E. A. Alvarez +164

Context. We present the discovery of very high energy (VHE, E > 100GeV) gamma-ray emission from the BL Lac object 1ES 1215+303 by the MAGIC telescopes and simultaneous multi-wavele…

astro-ph.HE2012★ 740 cited

Fermi-LAT Observations of the Diffuse Gamma-Ray Emission: Implications for Cosmic Rays and the Interstellar Medium

LAT Collaboration

The gamma-ray sky >100 MeV is dominated by the diffuse emissions from interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way. Observations of t…

astro-ph.HE2012★ 114 cited

Anisotropies in the diffuse gamma-ray background measured by the Fermi LAT

M. Ackermann, M. Ajello, A. Albert +134

The contribution of unresolved sources to the diffuse gamma-ray background could induce anisotropies in this emission on small angular scales. We analyze the angular power spectrum…

astro-ph.HE2012★ 89 cited

Morphological and spectral properties of the W51 region measured with the MAGIC telescopes

MAGIC Collaboration, J. Aleksić, E. A. Alvarez +157

The W51 complex hosts the supernova remnant W51C which is known to interact with the molecular clouds in the star forming region W51B. In addition, a possible pulsar wind nebula CX…

astro-ph.HE2012★ 46 cited

Constraining the High-Energy Emission from Gamma-ray Bursts with Fermi

LAT Collaboration, GBM Collaboration

We examine 288 GRBs detected by the Fermi Gamma-ray Space Telescope's Gamma-ray Burst Monitor (GBM) that fell within the field-of-view of Fermi's Large Area Telescope (LAT) during…

astro-ph.HE2012★ 161 cited

Search for Dark Matter Satellites using the FERMI-LAT

The Fermi LAT Collaboration, M. Ackermann, A. Albert +133

Numerical simulations based on the Lambda-CDM model of cosmology predict a large number of as yet unobserved Galactic dark matter satellites. We report the results of a Large Area…

astro-ph.HE2012★ 35 cited

Discovery of VHE gamma-ray emission from the BL Lac object B3 2247+381 with the MAGIC telescopes

The MAGIC Collaboration, J. Aleksić, E. A. Alvarez +156

We study the non-thermal jet emission of the BL Lac object B3 2247+381 during a high optical state. The MAGIC telescopes observed the source during 13 nights between September 30th…

astro-ph.HE2012★ 9 cited

Limits on Large Extra Dimensions Based on Observations of Neutron Stars with the Fermi-LAT

Bijan Berenji, Elliott Bloom, Johann Cohen-Tanugi

We present limits for the compactification scale in the theory of Large Extra Dimensions (LED) proposed by Arkani-Hamed, Dimopoulos, and Dvali. We use 11 months of data from the Fe…