GRB 171205A: Hypernova and Newborn Neutron Star

Abstract

GRB 171205A is a low-luminosity, long-duration gamma-ray burst (GRB) associated with SN 2017iuk, a broad-line type Ic supernova (SN). It is consistent with being formed in the core-collapse of a widely separated binary, which we have called the binary-driven hypernova (BdHN) of type III. The core-collapse of the CO star forms a newborn NS ($\nu$NS) and the SN explosion. Fallback accretion transfers mass and angular momentum to the $\nu$NS, here assumed to be born non-rotating. The accretion energy injected into the expanding stellar layers powers the prompt emission. The multiwavelength power-law afterglow is explained by the synchrotron radiation of electrons in the SN ejecta, powered by energy injected by the spinning $\nu$NS. We calculate the amount of mass and angular momentum gained by the $\nu$NS, as well as the $\nu$NS rotational evolution. The $\nu$NS spins up to a period of $47$ ms, then releases its rotational energy powering the synchrotron emission of the afterglow. The paucity of the $\nu$NS spin explains the low-luminosity characteristic and that the optical emission of the SN from the nickel radioactive decay outshines the optical emission from the synchrotron radiation. From the $\nu$NS evolution, we infer that the SN explosion had to occur at most $7.36$ h before the GRB trigger. Therefore, for the first time, the analysis of the GRB data leads to the time of occurrence of the CO core-collapse leading to the SN explosion and the electromagnetic emission of the GRB event.

19 pages, 5 figures, accepted for publication in ApJ

References in corpus (23)

• Illuminating Gravitational Waves: A Concordant Picture of Photons from a Neutron Star Merger
• The Observable Signatures of GRB Cocoons
• A unified picture for low-luminosity and long gamma-ray bursts based on the extended progenitor of llgrb 060218/SN 2006aj
• Signatures of a jet cocoon in early spectra of a supernova associated with a $\gamma$-ray burst
• Magnetic, thermal and rotational evolution of isolated neutron stars
• Hypercritical Accretion, Induced Gravitational Collapse, and Binary-Driven Hypernovae
• Magnetic, thermal and rotational evolution of isolated neutron stars
• Multipolar electromagnetic fields around neutron stars: exact vacuum solutions and related properties
• Shock Breakout in Type Ibc Supernovae and Application to GRB 060218/SN 2006aj
• The afterglow of a relativistic shock breakout and low-luminosity GRBs
• Signature of a New-Born Black Hole from the Collapse of a Supra-massive Millisecond Magnetar
• The role of jets in exploding supernovae and in shaping their remnants
• Gravitomagnetic interaction of a Kerr black hole with a magnetic field as the source of the jetted GeV radiation of gamma-ray bursts
• Neutrino Oscillations Within the Induced Gravitational Collapse Paradigm of Long Gamma-Ray Bursts
• The morphology of the X-ray afterglows and of the jetted GeV emission in long GRBs
• Nature of the ultrarelativistic prompt emission phase of GRB 190114C
• The Second Plateau in X-ray Afterglow Providing Additional Evidence for Rapidly Spinning Magnetars as the GRB Central Engine
• A search for radio afterglows from gamma-ray bursts with the Australian Square Kilometre Array Pathfinder
• 1000 days of lowest frequency emission from the low-luminosity GRB 171205A
• The structure of the ultrarelativistic prompt emission phase and the properties of the black hole in GRB 180720B
• GRB 190829A -- A Showcase of Binary Late Evolution
• The first minutes of a binary-driven hypernova
• Radio linear polarization of GRB afterglows: Instrumental Systematics in ALMA observations of GRB 171205A

Cited by in corpus (3)

• GRB-SN Association within the Binary-Driven Hypernova Model
• Multipolar Electromagnetic Emission of Newborn Magnetar
• Probing electromagnetic-gravitational wave emission coincidence in type I binary-driven hypernova family of long GRBs at very-high redshift