The radiative efficiency of relativistic jet and wind: A case study of GRB 070110

Abstract

A rapidly spinning, strongly magnetized neutron star is invoked as the central engine for some Gamma-ray bursts (GRBs), especially, the $"$internal plateau$"$ feature of X-ray afterglow. However, for these $"$internal plateau$"$ GRBs, how to produce their prompt emission remains an open question. Two different physical process have been proposed in the literature, (1) a new-born neutron star is surrounded by a hyper-accreting and neutrino cooling disk, the GRB jet can be powered by neutrino annihilation aligning the spin axis; (2) a differentially rotating millisecond pulsar was formed due to different angular velocity between the interior core and outer shell parts of the neutron star, which can power an episodic GRB jet. In this paper, by analyzing the data of one peculiar GRB 070110 (with internal plateau), we try to test which model being favored. By deriving the physical parameters of magnetar with observational data, the parameter regime for initial period ($P_0$) and surface polar cap magnetic field ($B_{\mathrm{p}}$) of the central NS are $(0.96\sim 1.2)\mathrm{ms}$ and $(2.4\sim 3.7)\times 10^{14}\mathrm{G}$, respectively. The radiative efficiency of prompt emission is about ${\eta }_{\gamma }\sim 6\%$. However, the radiative efficiency of internal plateau (${\eta }_{\mathrm{X}}$) is larger than $31\%$ assuming the $M_{\mathrm{NS}}\sim 1.4M_{\odot }$ and $P_0\sim 1.2\mathrm{ms}$. The clear difference between the radiation efficiencies of prompt emission and internal plateau implies that they maybe originated from different components (e.g. prompt emission from the relativistic jet powered by neutrino annihilation, while the internal plateau from the magnetic outflow wind).

arXiv comment5 pages, 2 figures. 1 Table, Accepted for publication in MNRAS

References in corpus (37)

• Spectra and Light Curves of Gamma-Ray Burst Afterglows
• The Physics of Neutron Stars
• Optical and Long Wavelength Afterglow from Gamma-Ray Bursts
• Physical processes shaping GRB X-ray afterglow lightcurves: theoretical implications from the Swift XRT observations
• The Physics of Gamma-Ray Bursts and Relativistic Jets
• Evidence for a Canonical GRB Afterglow Light Curve in the Swift/XRT Data
• The Internal-Collision-Induced Magnetic Reconnection and Turbulence (ICMART) Model of Gamma-Ray Bursts
• Gamma-Ray Bursts: Progress, Problems & Prospects
• Gamma-ray Burst Afterglow with Continuous Energy Injection: Signature of a Highly-Magnetized Millisecond Pulsar
• Theories of Gamma-Ray Bursts
• The Proto-Magnetar Model for Gamma-Ray Bursts
• Signatures of magnetar central engines in short GRB lightcurves
• Short Duration Gamma-Ray Bursts with Extended Emission from Proto-Magnetar Spin-Down
• X-Ray Flares from Postmerger Millisecond Pulsars
• Gamma-Ray Bursts and Afterglows from Rotating Strange Stars and Neutron Stars
• The prompt energy release of gamma-ray bursts using a cosmological k-correction
• Swift observations of GRB 070110: an extraordinary X-ray afterglow powered by the central engine
• A Comprehensive Analysis of the Swift/XRT Data: II. Diverse Physical Origins of the Shallow Decay Segment
• A Complete Reference of the Analytical Synchrotron External Shock Models of Gamma-Ray Bursts
• The Millisecond Magnetar Central Engine in short GRBs
• A Study of the Afterglows of Four GRBs: Constraining the Explosion and Fireball Model
• The unusual X-ray emission of the short Swift GRB 090515: Evidence for the formation of a magnetar?
• GRB efficiency and Possible Physical Processes Shaping the Early Afterglow
• A test of the millisecond magnetar central engine model of GRBs with Swift data
• The X-ray afterglow flat segment in short GRB 051221A: Energy injection from a millisecond magnetar?
• Can X-ray emission powered by a spinning-down magnetar explain some GRB light curve features?
• Hyper-accreting black hole as GRB central engine. I: Baryon loading in GRB jets
• Gamma-ray Burst Energetics
• Analysis of the X-ray Emission of Nine Swift Afterglows
• The Observed Size and Shape of GRB Afterglow
• Short-living supermassive magnetar model for the early X-ray flares following short GRBs
• Power Density Spectra of Gamma-Ray Bursts in the Internal Shock Model
• On the Kinetic Energy and Radiative Efficiency of Gamma-Ray Bursts
• Magnetically Torqued Neutrino-Dominated Accretion Flows for Gamma-ray Bursts
• Modeling Gamma-Ray Burst X-Ray Flares within the Internal Shock Model
• Hyperaccreting Neutron-Star Disks and Neutrino Annihilation
• Hyperaccretion Disks around Neutron Stars

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• What can we learn from "internal plateaus"? The peculiar afterglow of GRB 070110
• Magnetar as Central Engine of Gamma-Ray Bursts: Central Engine-Jet Connection, Wind-Jet Energy Partition, and Origin of Some Ultra-Long Bursts
• Comparison of the Characteristics of Magnetars Born in Death of Massive Stars and Merger of Compact Objects With {\em Swift} Gamma-Ray Burst Data
• Early Evolution of a Newborn Magnetar with Strong Precession Motion in GRB 180620A
• Early Optical Observations of GRB 150910A: Bright Jet Optical Afterglow and X-ray Dipole Radiation from a Magnetar Central Engine
• To power the X-ray plateaus of gamma-ray bursts through larger amplitude electromagnetic waves
• Magnetar as Central Engine of Gamma-Ray Bursts: Quasi-Universal Jet, Event Rate and X-ray Luminosity Function of Dipole Radiations
• Constraining the Equation of State of Neutron Stars through GRB X-Ray Plateaus