616 datasets found

Keywords: gamma ray astronomy

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  • Optical variability of jetted AGN

    The variability characteristics of jetted active galactic nuclei (AGNs) serve as a powerful diagnostic tool for probing the physical mechanisms underlying accretion processes...
  • 4FGL very high-energy gamma-ray emitting blazars

    Very high-energy (VHE; >100GeV) {gamma}-ray emission originates via some of the most extreme particle acceleration processes in the Universe. Considering beamed active...
  • Gamma-ray burst polarization measurements

    Despite decades of polarization observations and high significance of polarized {gamma}-ray, X-ray, optical, and radio emissions in gamma-ray bursts (GRBs) accumulating in...
  • MAGIC DL5 Spectral Energy Distributions

    MAGIC DL5 release of spectral energy distributions for an increasing subset of published results. The dataset contains high-level products derived from...
  • MAGIC DL5 Light Curves

    MAGIC DL5 release of light curves for an increasing subset of published results. The dataset contains high-level products derived from MAGIC...
  • SSDC TAP Service

    SSDC TAP service dedicated to astronomical catalogs
  • X-ray catalog and classification of 4FGL-DR4 UGSs

    Our survey of the fourth Fermi Large Area Telescope catalog (4FGL) unassociated gamma-ray source regions using the X-Ray Telescope (XRT) and Ultraviolet/Optical Telescope (UVOT)...
  • Multiplets of IceCube alert events

    The IceCube Neutrino Observatory publishes "alert events", which are detections of high-energy neutrinos with a moderate-to-high probability of being of astrophysical origin....
  • Fermi LAT Fourth Source Cat. DR4 (4FGL-DR4)

    We present an incremental version (4FGL-DR4, for Data Release 4) of the fourth Fermi-LAT catalog containing 7194 gamma-ray sources. Based on the first 14 years of science data...
  • VLBI and bright Fermi/LAT sources

    A list of 205 {gamma}-ray strong objects was reported recently as a result of a three-month integration with the Large Area Telescope on board the Fermi Gamma-Ray Space...
  • The Fermi LAT sky as seen by INTEGRAL/IBIS

    In this Letter we present the result of the cross correlation between the fourth INTEGRAL/IBIS soft gamma-ray catalog, in the range 20-100keV, and the Fermi LAT bright source...
  • Associations between short GRBs & FRBs

    The physical origin of fast radio bursts (FRBs) is still unclear. However, young magnetars associated with short-duration gamma-ray bursts (SGRBs) have been thought to be...
  • ZTF LC analysis of Fermi LAT (4LAC-DR3) AGNs

    The variability mechanisms from jetted active galactic nuclei (AGNs) are still under debate. Here, the damped random walk (DRW) model, implemented through Gaussian processes...
  • X-ray burst pulse obs. from GBM, GECAM & HXMT

    SGR J1935+2154 is an extremely active magnetar and the source of the first fast radio burst in the Milky Way, characterized as a magnetar X-ray burst, but whether the temporal...
  • Radio-bright/dark GRBs X/radio properties

    We analyse two distinct samples of gamma-ray bursts (GRBs), with and without radio afterglow emission. We use an updated sample of 211 GRBs and find, in agreement with previous...
  • The gamma/optical flares of 4FGL-DR3 blazars

    Using blazar light curves from the optical All-Sky Automated Survey for Supernovae (ASAS-SN) and the {gamma}-ray Fermi-LAT telescope, we performed the most extensive statistical...
  • Estimating the peak energy of Swift GRBs

    Gamma-ray bursts (GRBs) are among the most energetic explosive phenomena in the universe, and their peak energy (Ep) is a key physical quantity for understanding the prompt...
  • Second H.E.S.S. GRB catalogue

    Recent observational efforts using imaging atmospheric Cherenkov telescopes (IACTs) have led to firm detections of very-high-energy (VHE) signals from bright gamma-ray bursts...
  • GCN VOEvent Streams From Swift-BAT (Burst Alert Telescope)

    VOEvent alerts produced from transient detections resulting from observations with the NASA Neil Gehrels Swift Observatory and the Burst Alert Telescope. Events should be...
  • GCN VOEvent Streams From Fermi-GBM

    VOEvent alerts produced from transient detections resulting from observations with the NASA Fermi Gamma-ray Burst Monitor. Events should be reported within tens to hundreds of...
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