The photospheric radiation model for the prompt emission of Gamma-ray Bursts: Interpreting four observed correlations

Abstract

We show that the experiential $E_{\mathrm{p}}-L$, $\Gamma -L$, $E_{\mathrm{p}}-\Gamma$ and ${\bar{\eta }}_{\gamma }-E_{\mathrm{p}}$ correlations (where $L$ is the time-averaged luminosity of the prompt emission, $E_{\mathrm{p}}$ is the spectral peak energy, $\Gamma$ is the bulk Lorentz factor and ${\bar{\eta }}_{\gamma }$ is the emission efficiency of Gamma-ray bursts) are well consistent with the relations between the resembling parameters predicted in the photospheric radiation model of the prompt emission of Gamma-ray bursts. The time-resolved thermal radiation of GRB 090902B does follow the $E_{\mathrm{p}}-L$ and $\Gamma -L$ correlations. A reliable interpretation of the four correlations in alternative models is still lacking. These facts may point towards a photospheric origin of prompt emission of some Gamma-ray Bursts.

9 pages, 1 figure, accepted for publication in ApJL

References in corpus (7)

• Gamma-Ray Bursts: Progress, Problems & Prospects
• A Comprehensive Analysis of Fermi Gamma-Ray Burst Data. I. Spectral Components and Their Possible Physical Origins of LAT/GBM GRBs
• Short versus Long Gamma-Ray Bursts: spectra, energetics, and luminosities
• A new method of determining the initial size and Lorentz factor of gamma-ray burst fireballs using a thermal emission component
• Revisiting the Long/Soft-Short/Hard Classification of Gamma-Ray Bursts in the Fermi Era
• GRB 090902B: afterglow observations and implications
• POET: POlarimeters for Energetic Transients

Cited by in corpus (21)

• The Physics of Gamma-Ray Bursts and Relativistic Jets
• Hyper-accreting black hole as GRB central engine. I: Baryon loading in GRB jets
• A hot cocoon in the ultralong GRB 130925A: hints of a PopIII-like progenitor in a low density wind environment
• Photosphere emission in the X-Ray Flares of Swift Gamma-Ray Bursts and Implications for the Fireball Properties
• Gamma-ray burst spectra and spectral correlations from sub-photospheric Comptonization
• An Observed Correlation Between Thermal and Non-Thermal Emission in Gamma-Ray Bursts
• Determine the Lorentz factor and the viewing angle of GRB 170817A
• Evaluating the bulk Lorentz factors of outflow material: lessons learned from the extremely-energetic outburst GRB 160625B
• Distributions of Gamma-Ray Bursts and Blazars in the $L_{\mathrm{p}}-E_{\mathrm{p}}$ Plane and Possible Implications for their Radiation Physics
• The Photosphere Emission Spectrum of Hybrid Relativistic Outflow for Gamma-ray Bursts
• Characteristics of Long Gamma-Ray bursts in the Comoving Frame
• Modeling Gamma-ray burst Afterglow observations with an Off-axis Jet emission
• GRB 220426A: A Thermal Radiation-Dominated Gamma-Ray Burst
• Gravitational wave observations may constrain gamma-ray burst models: the case of GW 150914 - GBM
• Constraining the bulk Lorentz factor from the photosphere emission
• GRB 080503: A very early blue kilonova and an adjacent non-thermal radiation component
• Evidence of Photosphere Emission Origin for Gamma-Ray Burst Prompt Emission
• A detailed time-resolved and energy-resolved spectro-polarimetric study of bright GRBs detected by AstroSat CZTI in its first year of operation
• An optical-ultraviolet flare with absolute AB magnitude of -39.4 detected in GRB 220101A
• A comprehensive view of blackbody components in the X-ray spectra of GRBs
• Modeling of the Gamma Ray Burst photospheric emission: Monte Carlo simulation of the GRB prompt emission, numerical results and discussion