Properties of the extremely energetic GRB~221009A from Konus-WIND and SRG/ART-XC observations

Abstract

We report on Konus-Wind (KW) and Mikhail Pavlinsky ART-XC telescope observations and analysis of a nearby GRB 221009A, the brightest $\gamma$-ray burst (GRB) detected by KW for $>$28 years of observations. The prompt, pulsed phase of the burst emission lasts for $\sim 600$ s and is followed by a steady power-law decay lasting for more than 25 ks. From the analysis of the KW and ART-XC light curves and the KW spectral data we derive time-averaged spectral peak energy of the burst $E_p\approx 2.6$ MeV, $E_p$ at the brightest emission peak $\approx 3.0$ MeV, the total 20 keV--10 MeV energy fluence of $\approx 0.22$ erg cm${}^{-2}$, and the peak energy flux in the same band of $\approx 0.03$ erg cm${}^{-2}$ s${}^{-1}$. The enormous observed fluence and peak flux imply, at redshift $z=0.151$, huge values of isotropic energy release $E_{\mathrm{iso}}\approx 1.2\times 10^{55}$ erg (or $\gtrsim 6.5$ solar rest mass) and isotropic peak luminosity $L_{\mathrm{iso}}\approx 3.4\times 10^{54}$ erg s${}^{-1}$ (64 ms scale), making GRB 221009A the most energetic and one the most luminous bursts observed since the beginning of the GRB cosmological era in 1997. The isotropic energetics of the burst fit nicely both "Amati" and "Yonetoku" hardness-intensity correlations for $>$300 KW long GRBs, implying that GRB~221009A is most likely a very hard, super-energetic version of a "normal" long GRB.

16 pages, 5 figures, 2 tables, accepted for publication in ApJL

References in corpus (19)

• An online repository of Swift/XRT light curves of GRBs
• 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
• The SRG X-ray orbital observatory, its telescopes and first scientific results
• GRB 221009A, The BOAT
• The ART-XC telescope on board the SRG observatory
• The Konus-Wind catalog of gamma-ray bursts with known redshifts. I. Bursts detected in the triggered mode
• The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C
• GRB 221009A: Discovery of an Exceptionally Rare Nearby and Energetic Gamma-Ray Burst
• The X-ray fundamental plane of the Platinum Sample, the Kilonovae and the SNe Ib/c associated with GRBs
• Confirming the gamma-ray burst spectral-energy correlations in the era of multiple time breaks
• Giant Flare in SGR 1806-20 and Its Compton Reflection from the Moon
• The Gamma--Ray Burst catalog obtained with the Gamma Ray Burst Monitor aboard BeppoSAX
• The Konus-Wind catalog of gamma-ray bursts with known redshifts. II. Waiting mode bursts simultaneously detected by Swift/BAT
• The IXPE view of GRB 221009A
• Gamma-ray emission from the impulsive phase of the 2017 September 06 X9.3 flare
• On extreme transient events from rotating black holes and their gravitational wave emission
• KW-Sun: The Konus-Wind Solar Flare Database in Hard X-ray and Soft Gamma-ray Ranges
• Spectral catalogue of bright gamma-ray bursts detected with the BeppoSAX/GRBM
• The Maximum Isotropic Equivalent Energy Of Gamma Ray Bursts

Cited by in corpus (36)

• Fermi-GBM Discovery of GRB 221009A: An Extraordinarily Bright GRB from Onset to Afterglow
• Very high energy gamma-ray emission beyond 10 TeV from GRB 221009A
• Observation of spectral lines in the exceptional GRB 221009A
• Stringent Tests of Lorentz Invariance Violation from LHAASO Observations of GRB 221009A
• AGILE gamma-ray detection of the exceptional GRB 221009A
• The peak-flux of GRB 221009A measured with GRBAlpha
• Search for 10--1000 GeV neutrinos from Gamma Ray Bursts with IceCube
• Constraints on Axion-like Particles from the Observation of GRB 221009A by LHAASO
• Towards a model of photon-axion conversion in the host galaxy of GRB 221009A
• The origin of very-high-energy gamma-rays from GRB 221009A: implications for reverse shock proton synchrotron emission
• Soft Gamma-Ray Spectral and Time evolution of the GRB 221009A: prompt and afterglow emission with INTEGRAL/IBIS-PICsIT
• Carpet-3 detection of a photon-like air shower with estimated primary energy above 100 TeV in a spatial and temporal coincidence with GRB 221009A
• The brightest GRB ever detected: GRB 221009A as a highly luminous event at z = 0.151
• GRB 221009A: revealing a hidden afterglow during the prompt emission phase with Fermi-GBM observations
• Implication of Jet Physics from MeV Line Emission of GRB 221009A
• Theoretical modeling of the exceptional GRB 221009A afterglow
• A Novel Model for the MeV Emission Line in GRB 221009A
• The Multiwavelength Picture of GRB 221009A's Afterglow
• GRB 221009A and the Apparently Most Energetic Gamma-Ray Bursts
• Camelidae on BOAT: observation of a second spectral component in GRB 221009A
• GRB 221009A with an unconventional precursor: a typical two-stage collapsar scenario?
• Probes for String-Inspired Foam, Lorentz, and CPT Violations in Astrophysics
• Probable evidence for a transient mega-electron volt emission line in the GRB 221023A
• GRB X-ray plateaus as evidence that the afterglow begins before the prompt gamma-ray emission
• Modelling multiwavelength afterglows of the VHE-GRB population
• Polarization Measurements as a Probe of Axion-Photon Coupling: a Study of GRB 221009A
• Two-component jet model for the afterglow emission of GRB 201216C and GRB 221009A and implications for jet structure of very-high-energy gamma-ray bursts
• Probing the interstellar medium toward GRB 221009A through X-ray dust scattering
• GRB 180728A and SN 2018fip: the nearest high-energy cosmological gamma-ray burst with an associated supernova
• Evidence for Planck Luminosity Bound in Quantum Gravity
• Extreme value distribution for gamma-ray-burst prompt data -- How unexpected was the BOAT event?
• Catching TeV emission from GRB 221009A and alike with LHAASO, LACT and SWGO
• Gravitational Wave Memory from Accelerating Relativistic Jets in Multiple Thick Shell Scenarios
• Spectral Hardness as the Primary Discriminator: Unveiling the Collapsar--Merger Boundary with a Gold-Standard Gamma-Ray Burst Sample
• Einstein Probe Fast X-ray Transients Extend the Physical Parameter Space of Relativistic Jets
• The impact of kilonova seed photons on GRB VHE emission