A VLA Study of High-redshift GRBs I - Multi-wavelength Observations and Modeling of GRB 140311A

Abstract

We present the first results from a recently concluded study of GRBs at $z\gtrsim 5$ with the Karl G. Jansky Very Large Array (VLA). Spanning $1$ to $85.5$ GHz and 7 epochs from 1.5 to 82.3 d, our observations of GRB 140311A are the most detailed joint radio and millimeter observations of a GRB afterglow at $z\gtrsim 5$ to date. In conjunction with optical/near-IR and X-ray data, the observations can be understood in the framework of radiation from a single blast wave shock with energy $E_{\mathrm{K},\mathrm{iso}}\approx 8.5\times 10^{53}$ erg expanding into a constant density environment with density, $n_0\approx 8{\mathrm{cm}}^{-3}$. The X-ray and radio observations require a jet break at $t_{\mathrm{jet}}\approx 0.6$ d, yielding an opening angle of ${\theta }_{\mathrm{jet}}\approx 4^{\circ }$ and a beaming-corrected blast wave kinetic energy of $E_{\mathrm{K}}\approx 2.2\times 10^{50}$ erg. The results from our radio follow-up and multi-wavelength modeling lend credence to the hypothesis that detected high-redshift GRBs may be more tightly beamed than events at lower redshift. We do not find compelling evidence for reverse shock emission, which may be related to fast cooling driven by the moderately high circumburst density.

16 pages, 13 figures, submitted to ApJ

References in corpus (11)

• The Supernova -- Gamma-Ray Burst Connection
• An online repository of Swift/XRT light curves of GRBs
• The Third Swift Burst Alert Telescope Gamma-Ray Burst Catalog
• Circumstellar Emission from Type Ib and Ic Supernovae
• A Comprehensive Analysis of the Swift/XRT Data: II. Diverse Physical Origins of the Shallow Decay Segment
• A Comprehensive Analysis of Swift/XRT Data: III. Jet Break Candidates in X-ray and Optical Afterglow Lightcurves
• The Dynamics and Afterglow Radiation of Gamma-Ray Bursts. I. Constant Density Medium
• A unifying view of Gamma Ray Burst Afterglows
• A Reverse Shock in GRB 160509A
• Thermal Electrons in GRB Afterglows
• Nonlinear particle acceleration and thermal particles in GRB afterglows

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