Fermi Observations of GRB 090902B: A Distinct Spectral Component in the Prompt and Delayed Emission

Abstract

We report on the observation of the bright, long gamma-ray burst, GRB 090902B, by the Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) instruments on-board the Fermi observatory. This was one of the brightest GRBs to have been observed by the LAT, which detected several hundred photons during the prompt phase. With a redshift of z = 1.822, this burst is among the most luminous detected by Fermi. Time-resolved spectral analysis reveals a significant power-law component in the LAT data that is distinct from the usual Band model emission that is seen in the sub-MeV energy range. This power-law component appears to extrapolate from the GeV range to the lowest energies and is more intense than the Band component both below $\sim$ 50 keV and above 100 MeV. The Band component undergoes substantial spectral evolution over the entire course of the burst, while the photon index of the power-law component remains constant for most of the prompt phase, then hardens significantly towards the end. After the prompt phase, power-law emission persists in the LAT data as late as 1 ks post-trigger, with its flux declining as $t^{-1.5}$. The LAT detected a photon with the highest energy so far measured from a GRB, $33.4_{-3.5}^{+2.7}$ GeV. This event arrived 82 seconds after the GBM trigger and $\sim$ 50 seconds after the prompt phase emission had ended in the GBM band. We discuss the implications of these results for models of GRB emission and for constraints on models of the Extragalactic Background Light.

Accepted for publication in ApJ Letters. Contact Authors: Elisabetta Bissaldi ([email protected]), James Chiang ([email protected]), Francesco de Palma ([email protected]), Sheila McBreen ([email protected])

References in corpus (21)

• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• The Fermi Gamma-Ray Burst Monitor
• The extragalactic optical-infrared background radiations, their time evolution and the cosmic photon-photon opacity
• Modeling the Extragalactic Background Light from Stars and Dust
• Steep Slopes and Preferred Breaks in GRB Spectra: the Role of Photospheres and Comptonization
• Lower Limits on Lorentz Factors in Gamma Ray Bursts
• Intergalactic Photon Spectra from the Far IR to the UV Lyman Limit for $0<z<6$ and the Optical Depth of the Universe to High Energy Gamma-Rays
• Implications of Cosmological Gamma-Ray Absorption II. Modification of gamma-ray spectra
• On the generation of high energy photons detected by the Fermi Satellite from gamma-ray bursts
• The Cooling Behavior of Thermal Pulses in Gamma-Ray Bursts
• A new method of determining the initial size and Lorentz factor of gamma-ray burst fireballs using a thermal emission component
• GeV Gamma-Ray Attenuation and the High-Redshift UV Background
• The Escape of High-Energy Photons from Gamma-Ray Bursts
• An ISOCAM survey through gravitationally lensing galaxy clusters
• The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C
• The onset of the GeV afterglow of GRB 090510
• Hadronic Models for the Extra Spectral Component in the short GRB 090510
• AGILE detection of delayed gamma-ray emission from GRB 080514B
• Broadband Spectral Properties of Bright High-Energy Gamma-Ray Bursts Observed with BATSE and EGRET
• The upstream magnetic field of GRB shocks
• A photometric redshift of $z=1.8_{-0.3}^{+0.4}$ for the \agile GRB 080514B

Cited by in corpus (299)

• The Physics of Gamma-Ray Bursts and Relativistic Jets
• Quantum Spacetime Phenomenology
• Modeling the Extragalactic Background Light from Stars and Dust
• The Fermi GBM Gamma-Ray Burst Spectral Catalog: Four Years Of Data
• Fermi Observations of GRB 090510: A Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 keV to GeV Energies
• Collisional mechanism for GRB emission
• The Afterglows of Swift-era Gamma-Ray Bursts. I. Comparing pre-Swift and Swift era Long/Soft (Type II) GRB Optical Afterglows
• The First Fermi LAT Gamma-Ray Burst Catalog
• Fermi-LAT Observations of the Gamma-ray Burst GRB 130427A
• Identification and properties of the photospheric emission in GRB090902B
• Detection of a Thermal Spectral Component in the Prompt Emission of GRB 100724B
• A Comprehensive Analysis of Fermi Gamma-Ray Burst Data. I. Spectral Components and Their Possible Physical Origins of LAT/GBM GRBs
• Constraining GRB Initial Lorentz Factor with the Afterglow Onset Feature and Discovery of a Tight Gamma_0-E_iso Correlation
• A decade of Gamma-Ray Bursts observed by $Fermi$-LAT: The 2${}^{nd}$ GRB catalog
• Science with e-ASTROGAM (A space mission for MeV-GeV gamma-ray astrophysics)
• Search for TeV Gamma-ray Emission from GRB 100621A, an extremely bright GRB in X-rays, with H.E.S.S
• Detection of a spectral break in the extra hard component of GRB 090926A
• External forward shock origin of high energy emission for three GRBs detected by Fermi
• GeV emission from Gamma Ray Bursts: a radiative fireball?
• Constraints on Lorentz Invariance Violation from Fermi-Large Area Telescope Observations of Gamma-Ray Bursts
• GRB110721A: An extreme peak energy and signatures of the photosphere
• Afterglow Observations of Fermi-LAT Gamma-Ray Bursts and the Emerging Class of Hyper-Energetic Events
• Gamma Ray Bursts in the comoving frame
• A theory of photospheric emission from relativistic, collimated outflows
• Evidence for a Photospheric Component in the Prompt Emission of the Short GRB120323A and its Effects on the GRB Hardness-Luminosity Relation
• A Comprehensive Analysis of Fermi Gamma-ray Burst Data: II. $E_{\mathrm{p}}$-Evolution Patterns and Implications for the Observed Spectrum-Luminosity Relations
• The Collimation and Energetics of the Brightest Swift Gamma-Ray Bursts
• Fermi-GBM Discovery of GRB 221009A: An Extraordinarily Bright GRB from Onset to Afterglow
• Impulsive Acceleration of Strongly Magnetized Relativistic Flows
• Open Questions in GRB Physics
• Physics of Gamma-Ray Bursts Prompt Emission
• Localization of Gamma-Ray Bursts using the Fermi Gamma-Ray Burst Monitor
• A Photosphere-Internal Shock Model of Gamma-Ray Bursts: Case Studies of Fermi/LAT Bursts
• Gamma Ray Bursts
• On the sensitivity of the HAWC observatory to gamma-ray bursts
• Fermi Large Area Telescope Constraints on the Gamma-ray Opacity of the Universe
• Gamma-ray bursts from magnetized collisionally-heated jets
• Neutrino Decays over Cosmological Distances and the Implications for Neutrino Telescopes
• The Connection Between Thermal and Non-Thermal Emission in Gamma-ray Bursts: General Considerations and GRB090902B as a Case Study
• Photosphere emission from a hybrid relativistic outflow with arbitrary dimensionless entropy and magnetization in GRBs
• Observational evidence of dissipative photospheres in gamma-ray bursts
• Optical and near-infrared follow-up observations of four Fermi/LAT GRBs : Redshifts, afterglows, energetics and host galaxies
• Lorentz Factor-Isotropic Luminosity/Energy Correlations of GRBS and Their Interpretation
• Non-Thermal emission from the photospheres of Gamma-Ray Burst outflows. I: High frequency tails
• Constraints on the Cosmic-Ray Density Gradient beyond the Solar Circle from Fermi gamma-ray Observations of the Third Galactic Quadrant
• Jet propagations, breakouts and photospheric emissions in collapsing massive progenitors of long duration gamma ray bursts
• The Fermi GBM gamma-ray burst time-resolved spectral catalog: brightest bursts in the first four years
• On The External Shock Synchrotron Model for GRBs' GeV Emission
• Klein-Nishina effects on the high-energy afterglow emission of gamma-ray bursts
• The Role of Stochastic Acceleration in the Prompt Emission of Gamma-Ray Bursts: Application to Hadronic Injection
• Fermi and Swift Gamma-Ray Burst Afterglow Population Studies
• Multiwavelength observations of GRB 110731A: GeV emission from onset to afterglow
• The Discovery and Nature of Optical Transient CSS100217:102913+404220
• Discovery of a Cosmological, Relativistic Outburst via its Rapidly Fading Optical Emission
• Three-Dimensional Simulations of MHD Turbulence Behind Relativistic Shock Waves and Their Implications for GRBs
• The ultra-long GRB 111209A - II. Prompt to afterglow and afterglow properties
• Bounding the Time Delay between High-energy Neutrinos and Gravitational-wave Transients from Gamma-ray Bursts
• NuSTAR Observations of GRB130427A establish a single component synchrotron afterglow origin for the late optical to multi-GeV emission
• Gamma-Ray Burst Science in the Era of the Cherenkov Telescope Array
• Towards a Better Understanding of the GRB Phenomenon: a New Model for GRB Prompt Emission and its effects on the New Non-Thermal L${}_{\mathrm{i}}^{\mathrm{NT}}$-E${}_{\mathrm{peak},\mathrm{i}}^{\mathrm{rest},\mathrm{NT}}$ relation
• Electrons' energy in GRB afterglows implied by radio peaks
• Evidence of two spectral breaks in the prompt emission of gamma ray bursts
• Gamma Ray Bursts in the Swift-Fermi Era
• Time-Resolved Spectroscopy of the 3 Brightest and Hardest Short Gamma-Ray Bursts Observed with the FGST Gamma-Ray Burst Monitor
• Estimating Long GRB Jet Opening Angles and Rest-Frame Energetics
• Evidence for Supernova-Synthesised Dust from the Rising Afterglow of GRB 071025 at z~5
• Gamma-Ray Burst Dynamics and Afterglow Radiation from Adaptive Mesh Refinement, Special Relativistic Hydrodynamic Simulations
• On the High Energy Emission of the Short GRB 090510
• Fermi Detection of γ-ray emission from the M2 Soft X-ray Flare on 2010 June 12
• Low-energy Spectra of Gamma-ray Bursts from Cooling Electrons
• On the magnetization of gamma-ray burst blast waves
• Radiative Transfer Models for Gamma-Ray Bursts
• Fermi and Swift Observations of GRB 190114C: Tracing the Evolution of High-Energy Emission from Prompt to Afterglow
• New Fermi-LAT event reconstruction reveals more high-energy gamma rays from Gamma-ray bursts
• A Revised Limit of the Lorentz Factors of GRBs with Two Emitting Regions
• Do Fermi-LAT observations imply very large Lorentz factors in GRB outflows ?
• Analysis and modelling of the multi-wavelength observations of the luminous GRB 190114C
• The Origin of the Prompt Emission for Short GRB 170817A: Photosphere Emission or Synchrotron Emission?
• The photospheric radiation model for the prompt emission of Gamma-ray Bursts: Interpreting four observed correlations
• Acceleration of Ultra-High Energy Cosmic Rays in the Colliding Shells of Blazars and GRBs: Constraints from the Fermi Gamma ray Space Telescope
• Synchrotron self-Compton as a likely mechanism of photons beyond the synchrotron limit in GRB 190114C
• Maximum synchrotron frequency for shock-accelerated particles
• Modeling the broadband emission of Fermi/LAT GRB 090902B
• GeV Emission from Collisional Magnetized Gamma Ray Bursts
• Is GeV Emission from Gamma-Ray Bursts of External Shock Origin?
• UHECR escape mechanisms for protons and neutrons from GRBs, and the cosmic ray-neutrino connection
• Photospheric Emission from Collapsar Jets in 3D Relativistic Hydrodynamics
• On the Implications of Late Internal Dissipation for Shallow-Decay Afterglow Emission and Associated High-Energy Gamma-Ray Signals
• Long-term Monitoring on Mrk 501 for Its VHE gamma Emission and a Flare in October 2011
• On the origin of >10 GeV photons in gamma-ray burst afterglows
• On the origin of the multi-GeV photons from the closest burst with intermediate luminosity: GRB 190829A
• Photospheric emission from stratified jets
• Discovery of an extra hard spectral component in the high-energy afterglow emission of GRB 130427A
• Photospheric Emission of Gamma-Ray Bursts
• High energy emission of GRB 130427A: evidence for inverse Compton radiation
• The physical conditions of the afterglow implied by MAGIC's sub-TeV observations of GRB 190114C
• Prompt thermal emission in gamma-ray bursts
• String Quantum Gravity, Lorentz-Invariance Violation and Gamma-Ray Astronomy
• Modeling the observations of GRB 180720B: From radio to sub-TeV gamma-rays
• Gamma-Ray Burst Spectrum with Decaying Magnetic Field
• On the Existence of the Plateau Emission in High-Energy Gamma-Ray Burst LightCurves observed byFermi-LAT
• A mechanism for fast radio bursts
• Bayesian Time-Resolved Spectroscopy of GRB Pulses
• Constraining the High-Energy Emission from Gamma-ray Bursts with Fermi
• High-energy emission from Gamma-Ray Bursts
• Monte-Carlo simulations of relativistic radiation mediated shocks: I. photon rich regime
• The sharpness of gamma-ray burst prompt emission spectra
• Prompt X-ray and Optical Excess Emission due to Hadronic Cascades in Gamma-Ray Bursts
• Spectral-Temporal Simulations of Internal Dissipation Models of Gamma-Ray Bursts
• Implications of electron acceleration for high-energy radiation from gamma-ray bursts
• GRB 090902B: afterglow observations and implications
• The time-resolved spectra of photospheric emission from a structured jet for gamma-ray bursts
• Multi-color blackbody emission in GRB 081221
• Spectral and Polarization Properties of Photospheric Emission From Stratified Jets
• Single- and Two-Component GRB Spectra in the Fermi GBM-LAT Energy Range
• Radiation Mechanism and Jet Composition of Gamma-Ray Bursts and GeV-TeV selected Radio Loud Active Galactic Nuclei
• GRB Fermi-LAT afterglows: explaining flares, breaks, and energetic photons
• FERMI constraints on the high energy, ~1 GeV, emission of long GRBs
• Flavor conversion of cosmic neutrinos from hidden jets
• The bulk Lorentz factors of Fermi-LAT GRBs
• Gamma-Ray Bursts as Sources of Strong Magnetic Fields
• Detection of High-Energy Gamma-Ray Emission during the X-ray flaring activity in GRB100728A
• Prospects for Detecting Gamma-Ray Bursts at Very High Energies with the Cherenkov Telescope Array
• Constraints on the Model of Gamma-ray Bursts and Implications from GRB 221009A: GeV gamma rays v.s. High-energy Neutrinos
• Peculiar prompt emission and afterglow in H.E.S.S. detected GRB 190829A
• PTF 10bzf (SN 2010ah): a broad-line Ic supernova discovered by the Palomar Transient Factory
• Sub-Photospheric Emission from Relativistic Radiation Mediated Shocks in GRBs
• Photospheric Emission in Gamma-Ray Bursts
• Constraints on Very High Energy Emission from GRB 130427A
• Constraining the contribution of Gamma-Ray Bursts to the high-energy diffuse neutrino flux with 10 years of ANTARES data
• Delayed Onset of High-Energy Emissions in Leptonic and Hadronic Models of Gamma-Ray Bursts
• Coasting external shock in wind medium: an origin for the X-ray plateau decay component in Swift GRB afterglows
• A unified constraint on the Lorentz invariance violation from both short and long GRBs
• First-year Results of Broadband Spectroscopy of the Brightest Fermi-GBM Gamma-Ray Bursts
• Interaction of a highly magnetized impulsive relativistic flow with an external medium
• Search for Gamma Ray Bursts with the Argo-YBJ Detector in Scaler Mode
• Gamma-ray Bursts Induced by Turbulent Reconnection
• Cherenkov Telescope Array is Well Suited to Follow Up Gravitational Wave Transients
• Thermal and nonthermal emission from a peculiar long-duration GRB 211211A
• Limits on the GeV Emission from Gamma-Ray Bursts
• Modeling the high-energy emission in GRB 110721A and implications on the early multiwavelength and polarimetric observations
• D-Foam Phenomenology: Dark Energy, the Velocity of Light and a Possible D-Void
• Neutrino and Cosmic-Ray Release from Gamma-Ray Bursts: Time-Dependent Simulations
• Gamma Ray Bursts
• The 999th Swift gamma-ray burst: Some like it thermal
• Gamma-ray burst afterglow blast waves
• Impact of Secondary Acceleration in Gamma-Ray Bursts
• Fermi observations of high-energy gamma-ray emission from GRB 090217A
• Closure relations of Gamma Ray Bursts in high energy emission
• High-energy emission as a test of the prior emission model for gamma-ray burst afterglows
• Constraints on the bulk Lorentz factor of Gamma-Ray Burst jets from Fermi/LAT upper limits
• Photon and Neutrino Spectra of Time-Dependent Photospheric Models of Gamma-Ray Bursts
• The effects of sub-shells in highly magnetized relativistic flows
• Timing properties of gamma-ray bursts detected by SPI-ACS detector on board of INTEGRAL
• AstroSat-CZTI detection of variable prompt emission polarization in GRB 171010A
• Analysis of GRB 080319B and GRB 050904 within the fireshell model: evidence for a broader spectral energy distribution
• IACT observations of gamma-ray bursts: prospects for the Cherenkov Telescope Array
• MAGIC upper limits on the GRB 090102 afterglow
• Magnetic jet model for GRBs and the delayed arrival of >100 MeV photons
• Fermi-LAT Detection of a GeV Afterglow from a Compact Stellar Merger
• Long wavelength unstable modes in the far upstream of relativistic collisionless shocks
• Testing High-latitude Curvature Effect of Gamma-Ray Bursts with {\it Fermi} Data: Evidence of Bulk Acceleration in Prompt Emission
• Hadronic origin of prompt high-energy emission of gamma-ray bursts revisited: in the case of a limited maximum proton energy
• Spectral catalogue of bright gamma-ray bursts detected with the BeppoSAX/GRBM
• Gamma-Ray Bursts: Temporal Scales and the Bulk Lorentz Factor
• Constraining the Lorentz invariance violation from the continuous spectra of short gamma-ray bursts
• Extreme Variability in a Long Duration Gamma-ray Burst Associated with a Kilonova
• The role of hadronic cascades in GRB models of efficient neutrino production
• Violation of synchrotron line of death by the highly polarized $GRB160802A$
• CGRO/BATSE Data Support the New Paradigm for GRB Prompt Emission and the New L${}_i^{nTh}$-E${}_{peak,i}^{nTh,rest}$ relation
• Multi-collision internal shock lepto-hadronic models for energetic GRBs
• High-Energy Non-Thermal and Thermal Emission from GRB141207A detected by Fermi
• GRB Observational Properties
• Distributions of Gamma-Ray Bursts and Blazars in the $L_{\mathrm{p}}-E_{\mathrm{p}}$ Plane and Possible Implications for their Radiation Physics
• Properties of the Intergalactic Magnetic Field Constrained by Gamma-ray Observations of Gamma-Ray Bursts
• Probing the EBL evolution at high redshift using GRBs detected with the Fermi-LAT
• The AGILE observations of the hard and bright GRB 100724B
• Gamma Ray Bursts and their links with Supernovae and Cosmology
• Time evolution of the spectral break in the high-energy extra component of GRB 090926A
• Evidence for mild deviation from power-law distribution of electrons in relativistic shocks: GRB 090902B
• Testing Einstein's Equivalence Principle with Short Gamma-ray Bursts
• On particle acceleration rate in GRB afterglows
• A Coincidence Search for Cosmic Neutrino and Gamma-Ray Emitting Sources Using IceCube and Fermi LAT Public Data
• GRB Spectrum from Gradual Dissipation in a Magnetized Outflow
• Prospects for the detection of the prompt very-high-energy emission from $\gamma$-ray bursts with the High Altitude Detection of Astronomical Radiation experiment
• Hadronic Models for LAT Prompt Emission Observed in Fermi Gamma-Ray Bursts
• Measuring Ambient Densities and Lorentz Factors of Gamma-Ray Bursts from GeV and Optical Observations
• Magnetically and Baryonically Dominated Photospheric Gamma-Ray Burst Model Fits to Fermi LAT Observations
• The Photosphere Emission Spectrum of Hybrid Relativistic Outflow for Gamma-ray Bursts
• Spectral components in the bright, long GRB 061007: properties of the photosphere and the nature of the outflow
• The ultra-long GRB 220627A at z=3.08
• Time-resolved Spectral Study Of Fermi GRBs Having Single Pulses
• The 7.2/3 Years Collection of Well-Monitored Fermi-LAT GRB Afterglows
• VAMOS: a Pathfinder for the HAWC Gamma-Ray Observatory
• Search for Gamma Ray Bursts with the ARGO-YBJ Detector in Shower Mode
• Hadronic supercriticality as a trigger for GRB emission
• Gamma-ray burst polarization via Compton scattering process
• Time delays between Fermi LAT and GBM light curves of GRBs
• Simulations of gamma-ray burst afterglows with a relativistic kinetic code
• Evolution Patterns of the Peak Energy in the GRB Prompt Emission
• Anomalies in low-energy Gamma-Ray Burst spectra with the Fermi Gamma-Ray Burst Monitor
• Monte-Carlo simulations of relativistic radiation mediated shocks: II. photon starved regime
• Dissecting the Energy Budget of a Gamma-Ray Burst Fireball
• A backscattering dominated prompt emission model for the prompt phase of Gamma ray bursts
• Comptonization signatures in the prompt emission of Gamma Ray Bursts
• Search for very-high-energy emission from Gamma-ray Bursts using the first 18 months of data from the HAWC Gamma-ray Observatory
• Strategies for the Follow-up of Gravitational Wave Transients with the Cherenkov Telescope Array
• Evidence of an Internal Dissipation Origin for the High-energy Prompt Emission of GRB 170214A
• Gamma Ray Bursts in the Fermi era: the spectral energy distribution of the prompt emission
• Multiband Fitting to Three Long GRBs with Fermi/LAT Data: Structured Ejecta Sweeping up a Density-Jump Medium
• GRB 220426A: A Thermal Radiation-Dominated Gamma-Ray Burst
• Lorentz invariance violation and electromagnetic field in an intrinsically anisotropic spacetime
• Two Component Jets of GRB160623A as Shocked Jet cocoon afterglow
• Searching for Needles in Haystacks - Looking for GRB gamma-rays with the Fermi/LAT Detector
• Background estimation in a wide-field background-limited instrument such as Fermi GBM
• Observational Search for PeV-EeV Tau Neutrino from GRB081203A
• The supercritical pile gamma-ray burst model: The GRB afterglow steep-decline-and-plateau phase
• Energetic Fermi/LAT GRB100414A: Energetic and Correlations
• Search for gamma rays from SNe with a variable-size sliding-time-window analysis of the Fermi-LAT data
• GRB 131231A: Implications of the GeV emission
• A new method of pulse-wise spectral analysis of Gamma-ray Bursts
• GRB 110709A, 111117A and 120107A: Faint high-energy gamma-ray photon emission from Fermi/LAT observations and demographic implications
• Description of atypical bursts seen slightly off-axis
• GRB observations by Fermi LAT revisited: new candidates found
• Search for GeV Gamma Ray Bursts with the ARGO-YBJ Detector: Summary of Eight Years of Observations
• Neutrino emission from high-energy component gamma-ray bursts
• Insights into the physics of GRBs from the high-energy extension of their prompt emission spectra
• Inverse Compton Scattering Spectra of Gamma-Ray Burst Prompt Emission
• A new fitting function for GRB MeV spectra based on the internal shock synchrotron model
• Implication of GRB 221009A: Can TeV Emission Come from the GRB Prompt Phase?
• Vertical Advection Effects on Hyper-accretion Disks and Potential Link between Gamma-ray Bursts and Kilonovae
• Gamma Ray Bursts -- A radio perspective
• Background Dependent Lorentz Violation: Natural Solutions to the Theoretical Challenges of the OPERA Experiment
• The upstream magnetic field of collisionless GRB shocks: constraint by Fermi-LAT observations
• Using Gamma-Ray Burst Prompt Emission to Probe Relativistic Shock Acceleration
• Spectral evolution of long Gamma Ray Burst prompt emission: electrostatic acceleration and adiabatic expansion
• A Cosmological Fireball with Sixteen-Percent Gamma-Ray Radiative Efficiency
• "Self-absorbed" GeV light-curves of Gamma-Ray Burst afterglows
• The Fermi view of gamma-ray bursts
• Fermi Large Area Telescope observations of GRB 110625A
• Constraining Magnetization of Gamma-Ray Bursts Outflows using Prompt Emission Fluence
• Constraining the Bulk Lorentz Factor of GRB Outflow in the Magnetic-dominated Jet Model
• Time-dependent Multi-group Multidimensional Relativistic Radiative Transfer Code Based On Spherical Harmonic Discrete Ordinate Method
• Evidence of Photosphere Emission Origin for Gamma-Ray Burst Prompt Emission
• VERITAS Observations of Six Bright, Hard-Spectrum Fermi-LAT Blazars
• Detection prospects for multi-GeV neutrinos from collisionally heated GRBs
• Local absorption of high-energy emission from gamma-ray bursts
• The maximum energy of shock-accelerated electrons in a microturbulent magnetic field
• Statistical properties of Fermi GBM GRBs' spectra
• Ultra-relativistic double explosions
• The Origin of the Photospheric Emission of GRB 220426A
• Multiple Components in the Broadband $\gamma$-ray Emission of the Short GRB 160709A
• Fermi-LAT high $z$ AGN and the Extragalactic Background Light
• A lingering non-thermal component in the GRB prompt emission: predicting GeV emission from the MeV spectrum
• GRB980923. A burst with a short duration high energy component
• Temporal and Spectral Evolution of Gamma-ray Burst Broad Pulses: Identification of High Latitude Emission in the Prompt Emission
• The change of GRB polarization angles in the magnetic-dominated jet model
• Faint high-energy gamma-ray photon emission of GRB 081006A from Fermi observations
• A Search for Cosmic Neutrino and Gamma-Ray Emitting Transients in 7.3 Years of ANTARES and Fermi LAT Data
• Gamma Ray Burst Prompt Emission Variability in Synchrotron and Synchrotron Self-Compton Lightcurves
• Fermi and Swift observations of the bright short GRB 090510
• Prospects for Time-Domain and Multi-Messenger Science with eXTP
• Broad band simulation of Gamma Ray Bursts (GRB) prompt emission in presence of an external magnetic field
• RHESSI Tests of Quasi-Thermal Gamma-Ray Burst Spectral Models
• Gamma Ray Bursts: recent results and connections to very high energy Cosmic Rays and Neutrinos
• Constraints on the very high energy gamma-ray emission from short GRBs with HAWC
• A two-hump spectrum in the prompt emission of GRB 240825A
• Lorentz Factor Evolution of an Expanding Jet Shell Observed in Gamma-ray Burst: Case study of GRB 160625B
• A LOFAR prompt search for radio emission accompanying X-ray flares in GRB 210112A
• Stringy Space-Time Foam and High-Energy Cosmic Photons
• High energy emission of GRB 130821A: constraining the density profile of the circum-burst medium as well as the initial Lorentz factor of the outflow
• Time-averaging Polarimetric and Spectral Properties of Gamma-Ray Bursts
• Magnetically driven coupling in relativistic radiation-mediated shocks
• The statistics of BAT-to-XRT flux ratio in GRB: Evidence for a characteristic value and its implications
• Photospheric Emission in Gamma-ray Bursts: Variability
• Time-resolved Spectral Properties of Fermi-GBM Bright Long Gamma-Ray Bursts
• Neutrinos from Cosmic Accelerators Including Magnetic Field and Flavor Effects
• High energy emission from transients
• Prompt Optical Emission from Gamma-ray Bursts with Non-single Timescale Variability of Central Engine Activities
• Time resolved spectral analysis of the prompt emission of long gamma ray bursts with GeV Emission
• GRB Spectra in the complex of synchrotron and Compton processes
• High Energy Photons From Gamma Ray Bursts
• Hadronic supercriticality in spherically expanding sources: application to GRB prompt emission
• Explosive and radio-selected Transients: Transient Astronomy with SKA and its Precursors
• A Comprehensive Study of Bright Fermi-GBM Short Gamma-Ray Bursts: I. Multi-Pulse Lightcurves and Multi-Component Spectra
• High energy time lags of Gamma Ray Bursts
• Plasmas in Gamma-Ray Bursts: particle acceleration, magnetic fields, radiative Processes and environments
• Two distinct phases in the first 13 seconds of GRB110731A prompt emission
• Searching for an additional high-energy component in Fermi-LAT GRB afterglows
• A generalized method to measure the Lorentz factor from gamma-ray burst photospheric emission
• Time stretching of the GeV emission of GRBs: Fermi-LAT data vs geometrical model
• Gamma ray emission from magnetized relativistic GRB outflows
• Is gamma-ray burst polarization from photosphere emission?
• Modeling of the Gamma Ray Burst photospheric emission: Monte Carlo simulation of the GRB prompt emission, numerical results and discussion
• Connecting the early afterglow to the prompt GRB and the central engine in the striped jet model
• A Comprehensive Study of Bright Fermi-GBM Short Gamma-Ray Bursts: II. Very Short Burst and Its Implications
• Radiative Mechanisms in GRB prompt emission
• Synchrotron self-Compton Reverse Shock in Energy-Injection and Radiative Scenarios
• Crystal Eye: all sky MeV monitor with high precision real-time localization