The Ep,i - Eiso correlation: type I gamma-ray bursts and the new classification method
arXiv:1912.09810 · doi:10.1093/mnras/stz3611
Abstract
We present the most extensive sample of 45 type I (short) and 275 type II (long) gamma-ray bursts (GRB) with known redshift to investigate the correlation between the rest frame peak energy, Ep,i and the total isotropic equivalent energy, Eiso of the prompt emission (Amati relation). The Ep,i - Eiso correlation for type I bursts is found to be well-distinguished from the one constructed for type II bursts and has a similar power-law index value, a = 0.4, which possibly indicates the same emission mechanism of both GRB types. We show that the initial pulse complex (IPC) of type I bursts with an extended emission and regular type I bursts follow the same correlation. We obtain similar results for type II bursts associated with Ic supernovae and for regular type II bursts. Three possible outliers from the Ep,i - Eiso correlation for type II subsample are detected. Significant evolution of the Ep,i - Eiso correlation with redshift for type II bursts is not found. We suggest the new classification method, based on the Ep,i - Eiso correlation and introduce two parameters, EH and EHD. EHD is found to be the most reliable parameter for the blind type I - type II classification, which can be used to classify GRBs with no redshift.
20 pages, 6 figures, Accepted to MNRAS 2019 December 18, in original form 2019 October 24
References in corpus (33)
- Multi-messenger Observations of a Binary Neutron Star Merger
- Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
- An Ordinary Short Gamma-Ray Burst with Extraordinary Implications: Fermi-GBM Detection of GRB 170817A
- INTEGRAL Detection of the First Prompt Gamma-Ray Signal Coincident with the Gravitational Wave Event GW170817
- Discerning the physical origins of cosmological Gamma-ray bursts based on multiple observational criteria: the cases of z=6.7 GRB 080913, z=8.3 GRB 090423, and some short/hard GRBs
- Short Duration Gamma-Ray Bursts with Extended Emission from Proto-Magnetar Spin-Down
- The Hubble Diagram to Redshift >6 from 69 Gamma-Ray Bursts
- A Complete Catalog of Swift GRB Spectra and Durations: Demise of a Physical Origin for Pre-Swift High-Energy Correlations
- The optically unbiased GRB host (TOUGH) survey. I. Survey design and catalogs
- Fallback accretion in the aftermath of a compact binary merger
- Short versus Long Gamma-Ray Bursts: spectra, energetics, and luminosities
- The Konus-Wind catalog of gamma-ray bursts with known redshifts. I. Bursts detected in the triggered mode
- GRB170817A associated with GW170817: multifrequency observations and modeling of prompt gamma-ray emission
- Revisiting the Long/Soft-Short/Hard Classification of Gamma-Ray Bursts in the Fermi Era
- Comparing the spectral lag of short and long gamma-ray bursts and its relation with the luminosity
- Correlations Between Lag, Luminosity, and Duration in Gamma-ray Burst Pulses
- The Afterglow and Early-Type Host Galaxy of the Short GRB 150101B at z=0.1343
- On the Spectral Lags of the Short Gamma-Ray Bursts
- Are GRB 980425 and GRB 031203 real outliers or twins of GRB 060218?
- The Gamma--Ray Burst catalog obtained with the Gamma Ray Burst Monitor aboard BeppoSAX
- Fallback Accretion onto a Newborn Magnetar: short GRBs with Extended Emission
- Observation of the second LIGO/Virgo event connected with binary neutron star merger S190425z in the gamma-ray range
- Multicolour modelling of SN 2013dx associated with GRB 130702A
- A Trio of GRB-SNe: GRB 120729A, GRB 130215A / SN 2013ez and GRB 130831A / SN 2013fu
- Precursors of Short Gamma-Ray Bursts in the SPI-ACS/INTEGRAL Experiment
- The low-luminosity tail of the GRB distribution: the case of GRB 980425
- Catalog of Short Gamma-Ray Transients Detected in the SPI/INTEGRAL Experiment
- Revisiting the characteristics of the spectral lags in short gamma-ray bursts
- A Revised Host Galaxy Association for GRB 020819B: A High-Redshift Dusty Starburst, Not a Low-Redshift Gas-Poor Spiral
- A multi-wavelength analysis of a collection of short-duration GRBs observed between 2012-2015
- Determine the Lorentz factor and the viewing angle of GRB 170817A
- Can we quickly flag Ultra-long Gamma-Ray Bursts?
- GRB 051008: A long, spectrally-hard dust-obscured GRB in a Lyman-Break Galaxy at z ~ 2.8