Revise thermal winds of remnant neutron stars in gamma-ray bursts

Abstract

It seems that the wealth of information revealed by the multi-messenger observations of the binary neutron star (NS) merger event, GW170817/GRB 170817A/kilonova AT2017gfo, places irreconcilable constraints to models of the prompt emission of this gamma-ray burst (GRB). The observed time delay between the merger of the two NSs and the trigger of the GRB and the thermal tail of the prompt emission can hardly be reproduced by these models simultaneously. We argue that the merger remnant should be an NS (last for, at least, a large fraction of 1s), and that the difficulty can be alleviated by the delayed formation of the accretion disk due to the absorption of high-energy neutrinos emitted by the NS and the delayed emergence of an effective viscous in the disk. Further, we extend the consideration of the effect of the energy deposition of neutrinos emitted from the NS. If the NS is the central object of a GRB with a distance and duration similar to that of GRB 170817A, thermal emission of the thermal bubble inflated by the NS after the termination of accretion may be detectable. If our scenario is verified, it would be of interest to investigate the cooling of nascent NSs.

arXiv comment9 pages, 1 figure, RAA accepted

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
• Unsteady Outflow Models for Cosmological Gamma-Ray Bursts
• Neutron Star Cooling
• The Internal-Collision-Induced Magnetic Reconnection and Turbulence (ICMART) Model of Gamma-Ray Bursts
• Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817
• The shock break-out of GRB 060218/SN 2006aj
• Nucleosynthesis in neutrino-driven winds: I. The physical conditions
• Neutrino-driven winds from neutron star merger remnants
• Steep Slopes and Preferred Breaks in GRB Spectra: the Role of Photospheres and Comptonization
• The Cooling of Compact Stars
• Neutrino signatures and the neutrino-driven wind in Binary Neutron Star Mergers
• Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817
• Short GRBs with Extended Emission from Magnetar Birth: Jet Formation and Collimation
• Merger and Mass Ejection of Neutron-Star Binaries
• Hydrodynamics of Relativistic Fireballs
• Discovery of the nearby long, soft GRB 100316D with an associated supernova
• A cocoon shock breakout as the origin of the $\gamma$-ray emission in GW170817
• Neutrino-dominated accretion flows as the central engine of gamma-ray bursts
• A long-lived neutron star merger remnant in GW170817: constraints and clues from X-ray observations
• Search for gravitational waves from a long-lived remnant of the binary neutron star merger GW170817
• A long-lived remnant neutron star after GW170817 inferred from its associated kilonova
• Lessons from the short GRB170817A - the First Gravitational Wave Detection of a Binary Neutron Star Merger
• Thermal emission from bare quark matter surfaces of hot strange stars
• Evidence for X-ray Emission in Excess to the Jet Afterglow Decay 3.5 yrs After the Binary Neutron Star Merger GW 170817: A New Emission Component
• The Origin of the Prompt Emission for Short GRB 170817A: Photosphere Emission or Synchrotron Emission?
• Propagation of a Short GRB Jet in the Ejecta: Jet Launching Delay Time, Jet Structure, and GW170817/GRB 170817A
• Thermal Components in Gamma-ray Bursts. I. How Do They Affect Non-Thermal Spectral Parameters?
• A short gamma-ray burst from a proto-magnetar remnant
• Broadband Emission from a Kilonova Ejecta-Pulsar Wind Nebula System: Late-Time X-ray Afterglow Rebrightening of GRB 170817A
• A magnetically driven origin for the low luminosity GRB 170817A associated with GW170817
• The afterglow emission from a stratified jet in GRB 170817A