A two component jet model for the X-ray afterglow flat segment in short GRB 051221A

Abstract

In the double neutron star merger or neutron star-black hole merger model for short GRBs, the outflow launched might be mildly magnetized and neutron rich. The magnetized neutron-rich outflow will be accelerated by the magnetic and thermal pressure and may form a two component jet finally, as suggested by Vlahakis, Peng & Königl (2003). We show in this work that such a two component jet model could well reproduce the multi-wavelength afterglow lightcurves, in particular the X-ray flat segment, of short GRB 051221A. In this model, the central engine need not to be active much longer than the prompt $\gamma -$ray emission.

11 pages, 2 figure; Accepted for publication by ApJL

References in corpus (34)

• Spectra and Light Curves of Gamma-Ray Burst Afterglows
• The Supernova -- Gamma-Ray Burst Connection
• Gamma-Ray Bursts
• Physical processes shaping GRB X-ray afterglow lightcurves: theoretical implications from the Swift XRT observations
• A short gamma-ray burst apparently asssociated with an elliptical galaxy at redshift z=0.225
• The afterglow of GRB050709 and the nature of the short-hard gamma-ray bursts
• On The Synchrotron Self-Compton Emission from Relativistic Shocks and Its Implications for Gamma-Ray Burst Afterglows
• Producing ultra-strong magnetic fields in neutron star mergers
• Accretion Models of Gamma-Ray Bursts
• X-Ray Flares from Postmerger Millisecond Pulsars
• Refreshed Shocks and Afterglow Longevity in GRB
• GRB990123, The Optical Flash and The Fireball Model
• A Common Origin for Cosmic Explosions Inferred from Fireball Calorimetry
• An origin for short g-ray bursts unassociated with current star formation
• Fundamental Physical Parameters of Collimated Gamma-Ray Burst Afterglows
• High Resolution Calculations of Merging Neutron Stars III: Gamma-Ray Bursts
• The Afterglow, Energetics and Host Galaxy of the Short-Hard Gamma-Ray Burst 051221a
• Overall Evolution of Jetted Gamma-ray Burst Ejecta
• Relativistic outflows from remnants of compact object mergers and their viability for short gamma-ray bursts
• A Study of the Afterglows of Four GRBs: Constraining the Explosion and Fireball Model
• The central engine of gamma-ray bursters
• GRB efficiency and Possible Physical Processes Shaping the Early Afterglow
• The X-ray afterglow flat segment in short GRB 051221A: Energy injection from a millisecond magnetar?
• Evolution of magnetized, differentially rotating neutron stars: Simulations in full general relativity
• Jet Breaks in Short Gamma-Ray Bursts. II: The Collimated Afterglow of GRB 051221A
• GRB 050509B: Constraints on short gamma-ray burst models
• Rebrightening of XRF 030723: further evidence for a two-component jet in gamma-ray burst
• Short-living supermassive magnetar model for the early X-ray flares following short GRBs
• High Resolution Calculations of Merging Neutron Stars I: Model Description and Hydrodynamic Evolution
• The very early afterglow powered by the ultra-relativistic mildly magnetized outflows
• Linearly polarized X-ray flares following short gamma-ray bursts
• Millimeter Observations of GRB 030329: Continued Evidence for a Two-Component Jet
• Diverse Temporal Properties of GRB Afterglow
• Neutron-Rich Hydromagnetic Outflows in Gamma-Ray Burst Sources

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• Short GRBs: opening angles, local neutron star merger rate and off-axis events for GRB/GW association
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• Energy Injection in Gamma-ray Burst Afterglows
• Magnetar-energized supernova explosions and GRB-jets
• Expected high energy emission from GRB 080319B and origins of the GeV emission of GRBs 080514B, 080916C and 081024B
• Structured Jets and X-ray Plateaus in Gamma-Ray Burst Phenomena
• First ALMA Light Curve Constrains Refreshed Reverse Shocks and Jet Magnetization in GRB 161219B
• Short Gamma-ray Bursts: the mass of the accretion disk and the initial radius of the outflow
• Statistical study of gamma-ray bursts with jet break feature in multi-wavelength afterglow emissions
• GW170817: The energy extraction process of the off-axis relativistic outflow and the constraint on the equation of state of neutron stars
• GRB 091029: At the limit of the fireball scenario
• Is the late near-infrared bump in short-hard GRB 130603B due to the Li-Paczynski kilonova?
• A two-component jet model based on the Blandford-Znajek and Blandford-Payne processes
• GRB 081029: A Gamma-Ray Burst with a Multi-Component Afterglow
• Correlation between peak energy and Fourier power density spectrum slope in gamma-ray bursts
• GRB 060206: hints of precession of the central engine?
• Late-Time Afterglow from Double-Sided Structured Jets: Application to GRB 170817A
• Discovery of Smoothly Evolving Blackbodies in the Early Afterglow of GRB 090618 : Evidence for a Spine-Sheath Jet?
• On the afterglow from the receding jet of gamma-ray burst
• Late afterglow emission statistics: a clear link between GW170817 and bright short GRBs
• The Luminosity Distribution of Short Gamma-Ray Bursts under a Structured Jet Scenario
• GRB Afterglow of the Sub-relativistic Materials with Energy Injection
• GeV Emission from neutron-rich internal shocks of some long Gamma-ray Bursts
• A two-component jet model for the optical plateau in the afterglow of GRB 191221B
• The Detection Prospect of the Counter Jet Radiation in the Late Afterglow of GRB 170817A
• Synchrotron self-Compton Reverse Shock in Energy-Injection and Radiative Scenarios
• Revealing Short GRB Jet Structure and Dynamics with Gravitational Wave Electromagnetic Counterparts