Relativistic Wind Bubbles and Afterglow Signatures

Abstract

Highly magnetized, rapidly rotating compact objects are widely argued as central energy sources of $\gamma$-ray bursts (GRBs). After the GRB, such a magnetar-like object may directly lose its rotational energy through some magnetically-driven processes, which produce an ultrarelativistic wind dominated possibly by the energy flux of electron-positron pairs. The interaction of such a wind with an outward-expanding fireball leads to a relativistic wind bubble, being regarded as a relativistic version of the well-studied Crab Nebula. We here explore the dynamics of this wind bubble and its emission signatures. We find that when the injection energy significantly exceeds the initial energy of the fireball, the bulk Lorentz factor of the wind bubble decays more slowly than before, and more importantly, the reverse-shock emission could dominate the afterglow emission, which yields a bump in afterglow light curves. In addition, high polarization of the bump emission would be expected if a toroidal magnetic field in the shocked wind dominates over the random component.

7 pages including 1 figure, emulateapj style, expanded version accepted for publication in ApJ

References in corpus (38)

• Spectra and Light Curves of Gamma-Ray Burst Afterglows
• Gamma-Ray Bursts as the Death Throes of Massive Binary Stars
• Optical and Long Wavelength Afterglow from Gamma-Ray Bursts
• Beaming in Gamma-Ray Bursts: Evidence for a Standard Energy Reservoir
• Are Gamma-Ray Bursts in Star Forming Regions?
• Generation of Magnetic Fields in the Relativistic Shock of Gamma-Ray-Burst Sources
• Gamma-ray Burst Afterglow with Continuous Energy Injection: Signature of a Highly-Magnetized Millisecond Pulsar
• Theories of Gamma-Ray Bursts
• Afterglow Emission from Naked Gamma-Ray Bursts
• Poynting Jets from Black Holes and Cosmological Gamma-Ray Bursts
• GRB Energetics and the GRB Hubble Diagram: Promises and Limitations
• Refreshed Shocks and Afterglow Longevity in GRB
• Asymmetric Supernovae, Pulsars, Magnetars, and Gamma-Ray Bursts
• Polarization of the prompt gamma-ray emission from the gamma-ray burst of 6 December 2002
• GRB990123, The Optical Flash and The Fireball Model
• A Common Origin for Cosmic Explosions Inferred from Fireball Calorimetry
• Gamma-Ray Bursts and Afterglows from Rotating Strange Stars and Neutron Stars
• Gamma-ray burst early optical afterglows: implications for the initial Lorentz factor and the central engine
• Impulsive and Varying Injection in GRB Afterglows
• The Blandford-Znajek Process as a Centeral Engine for a Gamma Ray Burst
• Dissipation in Poynting-flux Dominated Flows: the Sigma-Problem of the Crab Pulsar Wind
• The central engine of gamma-ray bursters
• The afterglow of GRB 021004: surfing on density waves
• A Standard Kinetic Energy Reservoir in Gamma-Ray Burst Afterglows
• Gamma-ray bursts with continuous energy injection and their afterglow signature
• The Variable Light Curve of GRB 030329: The Case for Refreshed Shocks
• Rebrightening of XRF 030723: further evidence for a two-component jet in gamma-ray burst
• Evolution of the polarization of the optical afterglow of the gamma-ray burst GRB 030329
• A Unified Treatment of the Gamma-Ray Burst 021211 and Its Afterglow Emissions
• Iron K-alpha Emission from a Decaying Magnetar Model of Gamma-Ray Bursts
• Resolving Gamma-Ray Burst 000301C with a Gravitational Microlens
• Hydrodynamics of Relativistic Blast Waves in a Density-Jump Medium and Their Emission Signature
• GRB 030226 in a Density-Jump Medium
• A Central Engine for Cosmic Gamma-Ray Burst Sources
• Variable polarization in the optical afterglow of GRB 021004
• Intrinsic and dust-induced polarization in gamma-ray burst afterglows: the case of GRB 021004
• Environment and Energy Injection Effects in GRB Afterglows
• Afterglow Light Curve Modulated by a Highly Magnetized Millisecond Pulsar

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