Exceptionally bright optical emission from a rare and distant $\gamma -$ray burst

Abstract

Long $\gamma$-ray bursts (GRBs) are produced by the dissipation of ultra-relativistic jets launched by newly-born black holes after the collapse of massive stars. Right after the luminous and highly variable $\gamma$-ray emission, the multi-wavelength afterglow is released by the external dissipation of the jet in circumburst medium. We report the discovery of a very bright ($\sim 10$ mag) optical emission $\sim 28$ s after the explosion of the extremely luminous and energetic GRB 210619B located at redshift 1.937. Early multi-filter observations allowed us to witness the end of the shock wave propagation into the GRB ejecta. We observed the spectral transition from a bright reverse to the forward shock emission, demonstrating that the early and late GRB multi-wavelength emission is originated from a very narrow jet propagating into an unusually rarefied interstellar medium. We also find evidence of an additional component of radiation, coming from the jet wings which is able explain the uncorrelated optical/X-ray emission.

References in corpus (66)

• emcee: The MCMC Hammer
• The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
• Spectra and Light Curves of Gamma-Ray Burst Afterglows
• Methods and results of an automatic analysis of a complete sample of Swift-XRT observations of GRBs
• The Fermi Gamma-Ray Burst Monitor
• Intrinsic spectra and energetics of BeppoSAX Gamma-Ray Bursts with known redshifts
• Unsteady Outflow Models for Cosmological Gamma-Ray Bursts
• GRB Formation Rates inferred from the Spectral Peak Energy - Luminosity Relation
• The Shape of Spectral Breaks in GRB Afterglows
• The collimation--corrected GRB energies correlate with the peak energy of their $\nu F_{\nu }$ spectrum
• Observation of contemporaneous optical radiation from a gamma-ray burst
• Can internal shocks produce the variability in GRBs?
• How to Tell a Jet from a Balloon: A Proposed Test for Beaming in Gamma Ray Bursts
• Predictions for The Very Early Afterglow and The Optical Flash
• Gamma-ray bursts from internal shocks in a relativistic wind: temporal and spectral properties
• Analytic Light-Curves of Gamma-Ray Burst Afterglows: Homogeneous versus Wind External Media
• Efficient acceleration and radiation in Poynting flux powered GRB outflows
• Poynting Jets from Black Holes and Cosmological Gamma-Ray Bursts
• Hydrodynamic Time Scales and Temporal Structure of GRBs
• Light Curves of GRB Optical Flashes
• Radio Transients from Gamma-Ray Bursters
• Gamma-ray burst early optical afterglows: implications for the initial Lorentz factor and the central engine
• The First Fermi LAT Gamma-Ray Burst Catalog
• Gamma-ray burst early afterglows: reverse shock emission from an arbitrarily magnetized ejecta
• The Afterglow of GRB 130427A from 1 to 10^16 GHz
• Nuclear Composition of Gamma-Ray Burst Fireballs
• GRB 021004: Reverse Shock Emission
• The efficiency of electron acceleration in collisionless shocks and GRB energetics
• A Reverse Shock in GRB 130427A
• Bulk Lorentz factors of Gamma-Ray Bursts
• The Early Light Curve of the Optical Afterglow of GRB 021211
• Discovery and identification of the very high redshift afterglow of GRB 050904
• Early Afterglow Emission from a Reverse Shock as a Diagnostic Tool for GRB Outflows
• The Bright Optical flash and Afterglow from the Gamma-Ray Burst GRB 130427A
• Gamma-ray bursts as cool synchrotron sources
• Swift panchromatic observations of the bright gamma-ray burst GRB050525a
• Physical parameters and emission mechanism in Gamma-Ray Bursts
• Optical Flash of GRB 990123: constraints on the physical parameter of the reverse shock
• Gamma Ray Bursts as Electromagnetic Outflows
• Multiwavelength analysis of the intriguing GRB 061126: the reverse shock scenario and magnetization
• Energy Injection in Gamma-ray Burst Afterglows
• Electrons' energy in GRB afterglows implied by radio peaks
• GRB 120521C at z~6 and the Properties of High-redshift GRBs
• Prompt optical emission as a signature of synchrotron radiation in gamma-ray bursts
• GRB 130925A: an ultra-long Gamma Ray Burst with a dust-echo afterglow, and implications for the origin of the ultra-long GRBs
• A Reverse Shock in GRB 160509A
• A hot cocoon in the ultralong GRB 130925A: hints of a PopIII-like progenitor in a low density wind environment
• Observational Limits on Inverse Compton Processes in GRBs
• GeV emission from a compact binary merger
• Optical and GeV-TeV flashes from gamma-ray bursts
• On the existence of a reverse shock in magnetized GRB ejecta
• Fast optical variability of Naked-Eye Burst - manifestation of periodic activity of internal engine
• ALMA Detection of a Linearly Polarized Reverse Shock in GRB 190114C
• GRB 081007 and GRB 090424: the surrounding medium, outflows and supernovae
• Clustering of LAT light curves: a clue to the origin of high-energy emission in Gamma-Ray Bursts
• Multi-wavelength observations of the energetic GRB 080810: detailed mapping of the broadband spectral evolution
• A Reverse Shock in GRB 181201A
• Magnetohydrodynamic Effects in Propagating Relativistic Jets: Reverse Shock and Magnetic Acceleration
• A Reverse Shock and Unusual Radio Properties in GRB 160625B
• Multi-wavelength view of the close-by GRB 190829A sheds light on gamma-ray burst physics
• Lowly polarized light from a highly magnetized jet of GRB 190114C
• Interaction of a highly magnetized impulsive relativistic flow with an external medium
• Naked-eye optical flash from GRB 080319B: Tracing the decaying neutrons in the outflow
• Very Bright Prompt and Reverse Shock Emission of GRB 140512A
• Optical flashes, reverse shocks and magnetization
• Multi-wavelength study of the luminous GRB 210619B observed with Fermi and ASIM

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• Search for the Optical Counterpart of Einstein Probe Discovered Fast X-ray Transients from Lulin Observatory
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