output
19932026
most citedThe Gaia mission

7.1k citations

Showing 2011 · astro-ph.HEShow all

27 papers · 2 filters

astro-ph.HE2011★ 73 cited

Fermi Detection of γ-ray emission from the M2 Soft X-ray Flare on 2010 June 12

Fermi GBM Collaboration, Fermi LAT Collaboration, B. R. Dennis +2

The GOES M2-class solar flare, SOL2010-06-12T00:57, was modest in many respects yet exhibited remarkable acceleration of energetic particles. The flare produced an ~50 s impulsive…

astro-ph.HE2011

Exploring the central sub-pc region of the γ-ray bright radio galaxy 3C 84 with the VLBA at 43 GHz in the period of 2002-2008

Kenta Suzuki, Hiroshi Nagai, Motoki Kino +13

Following the discovery of a new radio component right before the GeV γ-ray detection since 2008 August by Fermi Gamma-ray Space Telescope, we present a detailed study of the kinem…

astro-ph.HE2011★ 200 cited

Gamma-ray Activity in the Crab Nebula: The Exceptional Flare of April 2011

R. Buehler, J. D. Scargle, R. D. Blandford +18

The Large Area Telescope on board the Fermi satellite observed a gamma-ray flare in the Crab nebula lasting for approximately nine days in April of 2011. The source, which at optic…

astro-ph.HE2011★ 61 cited

The cosmic-ray and gas content of the Cygnus region as measured in gamma rays by the Fermi Large Area Telescope

the Fermi LAT Collaboration

The Cygnus region hosts a giant molecular-cloud complex which actively forms massive stars. Interactions of cosmic rays with interstellar gas and radiation fields make it shine at…

astro-ph.HE2011★ 29 cited

Simultaneous multi-wavelength campaign on PKS 2005-489 in a high state

The H. E. S. S. Collaboration, the Fermi LAT Collaboration, : +345

The high-frequency peaked BL Lac object PKS 2005-489 was the target of a multi-wavelength campaign with simultaneous observations in the TeV gamma-ray (H.E.S.S.), GeV gamma-ray (Fe…

astro-ph.HE2011

Young radio sources: the duty-cycle of the radio emission and prospects for gamma-ray emission

M. Orienti, D. Dallacasa, G. Giovannini +2

The evolutionary stage of a powerful radio source originated by an AGN is related to its linear size. In this context, compact symmetric objects (CSOs), which are powerful and intr…

astro-ph.HE2011★ 2 cited

The July 2010 outburst of the NLS1 PMN J0948+0022

L. Foschini, G. Ghisellini, L. Maraschi +23

We report about the multiwavelength campaign on the Narrow-Line Seyfert 1 (NLS1) Galaxy PMN J0948+0022 (z = 0.5846) performed in 2010 July-September and triggered by high activity…

astro-ph.HE2011★ 73 cited

Fermi Large Area Telescope Observations of the Supernova Remnant G8.7-0.1

LAT Collaboration

We present a detailed analysis of the GeV gamma-ray emission toward the supernova remnant (SNR) G8.7-0.1 with the Large Area Telescope (LAT) onboard the \emph{Fermi} Gamma-ray Spac…

astro-ph.HE2011★ 72 cited

Search for Gamma-ray Emission from X-ray Selected Seyfert Galaxies with Fermi-LAT

LAT Collaboration

We report on a systematic investigation of the gamma-ray properties of 120 hard X-ray-selected Seyfert galaxies classified as `radio-quiet' objects, utilizing the three-year accumu…

astro-ph.HE2011★ 595 cited

Measurement of separate cosmic-ray electron and positron spectra with the Fermi Large Area Telescope

The Fermi LAT Collaboration, M. Ackermann, M. Ajello +148

We measured separate cosmic-ray electron and positron spectra with the Fermi Large Area Telescope. Because the instrument does not have an onboard magnet, we distinguish the two sp…

astro-ph.HE2011★ 566 cited

Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope

LAT Collaboration, M. Ackermann, M. Ajello +150

Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interactin…

astro-ph.HE2011★ 1.3k cited

Fermi Large Area Telescope Second Source Catalog

LAT Collaboration

We present the second catalog of high-energy gamma-ray sources detected by the Large Area Telescope (LAT), the primary science instrument on the Fermi Gamma-ray Space Telescope (Fe…

astro-ph.HE2011★ 654 cited

The Second Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope

LAT Collaboration

The second catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area Telescope (LAT) in two years of scientific operation is presented. The Second LAT AGN Catalog (…

astro-ph.HE2011★ 124 cited

A Statistical Approach to Recognizing Source Classes for Unassociated Sources in the First Fermi-LAT Catalog

LAT Collaboration

The Fermi Large Area Telescope First Source Catalog (1FGL) provided spatial, spectral, and temporal properties for a large number of gamma-ray sources using a uniform analysis meth…

astro-ph.HE2011★ 34 cited

Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun

The Fermi LAT Collaboration

During its first year of data taking, the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope has collected a large sample of high-energy cosmic-ray electrons an…

astro-ph.HE2011★ 47 cited

Fermi Large Area Telescope Observations of the Active Galaxy 4C +55.17: Steady, Hard Gamma-Ray Emission and its Implications

W. McConville, L. Ostorero, R. Moderski +14

We report Fermi/LAT observations and broad-band spectral modeling of the radio-loud active galaxy 4C +55.17 (z=0.896), formally classified as a flat-spectrum radio quasar. Using 19…

astro-ph.HE2011★ 356 cited

Fermi-LAT Observations of Markarian 421: the Missing Piece of its Spectral Energy Distribution

LAT collaboration, A. A. Abdo et al., the MAGIC collaboration +4

We report on the gamma-ray activity of the high-synchrotron-peaked BL Lacertae object Mrk 421 during the first 1.5 years of Fermi operation, from 2008 August 5 to 2010 March 12. We…

astro-ph.HE2011★ 41 cited

Detection of High-Energy Gamma-Ray Emission during the X-ray flaring activity in GRB100728A

The Fermi Collaboration, L. Piro

We present the simultaneous Swift and Fermi observations of the bright GRB100728A and its afterglow. The early X-ray emission is dominated by a vigorous flaring activity continuing…

astro-ph.HE2011★ 132 cited

Fermi-LAT Observations of Two Gamma-Ray Emission Components from the Quiescent Sun

A. A. Abdo

We report the detection of high-energy gamma rays from the quiescent Sun with the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope (Fermi) during the first 1…

astro-ph.HE2011★ 239 cited

Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope

A. A. Abdo, Fermi LAT Collaboration

We present observations of the young Supernova remnant (SNR) RX J1713.7-3946 with the Fermi Large Area Telescope (LAT). We clearly detect a source positionally coincident with the…

astro-ph.HE2011★ 79 cited

AGILE detection of extreme gamma-ray activity from the blazar PKS 1510-089 during March 2009. Multifrequency analysis

F. D'Ammando, C. M. Raiteri, M. Villata +112

We report on the extreme gamma-ray activity from the FSRQ PKS 1510-089 observed by AGILE in March 2009. In the same period a radio-to-optical monitoring of the source was provided…

astro-ph.HE2011★ 186 cited

Discovery of High-Energy Gamma-Ray Emission from the Binary System PSR B1259-63/LS 2883 Around Periastron with Fermi

A. A. Abdo, Fermi LAT Collaboration, M. Chernyakova +3

We report on the discovery of \geq 100 MeV γ rays from the binary system PSR B1259-63/LS 2883 using the Large Area Telescope (LAT) on board Fermi. The system comprises a radio puls…

astro-ph.HE2011★ 211 cited

Fermi Gamma-ray Space Telescope Observations of the Gamma-ray Outburst from 3C 454.3 in November 2010

LAT collaboration

The flat-spectrum radio quasar 3C 454.3 underwent an extraordinary 5-day gamma-ray outburst in November 2010 where the daily flux measured with the Fermi Large Area Telescope (LAT)…

astro-ph.HE2011★ 64 cited

The first Fermi multifrequency campaign on BL Lacertae: characterizing the low-activity state of the eponymous blazar

A. A. Abdo

We report on observations of BL Lacertae during the first 18 months of Fermi-LAT science operations and present results from a 48-day multifrequency coordinated campaign from 2008…