The Optical Luminosity Function of Gamma-ray Bursts deduced from ROTSE-III Observations
arXiv:1409.4189 · doi:10.1088/0004-637X/795/2/103
Abstract
We present the optical luminosity function (LF) of gamma-ray bursts (GRBs) estimated from a uniform sample of 58 GRBs from observations with the Robotic Optical Transient Search Experiment III (ROTSE-III). Our GRB sample is divided into two sub-samples: detected afterglows (18 GRBs), and those with upper limits (40 GRBs). The band fluxes 100s after the onset of the burst for these two sub-samples are derived. The optical LFs at 100s are fitted by assuming that the co-moving GRB rate traces the star-formation rate. The detection function of ROTSE-III is taken into account during the fitting of the optical LFs by using Monte Carlo simulations. We find that the cumulative distribution of optical emission at 100s is well-described with an exponential rise and power-law decay (ERPLD), broken power-law (BPL), and Schechter LFs. A single power-law (SPL) LF, on the other hand, is ruled out with high confidence.
26 pages, 3 figures, ApJ accepted
References in corpus (15)
- The Internal-Collision-Induced Magnetic Reconnection and Turbulence (ICMART) Model of Gamma-Ray Bursts
- Gamma-Ray Bursts: Progress, Problems & Prospects
- A Complete Catalog of Swift GRB Spectra and Durations: Demise of a Physical Origin for Pre-Swift High-Energy Correlations
- The role of kink instability in Poynting-flux dominated jets
- The redshift distribution of SWIFT Gamma-Ray Bursts: evidence for evolution
- A Comparison of the Afterglows of Short- and Long-Duration Gamma-Ray Bursts
- Correlations of Prompt and Afterglow Emission in Swift Long and Short Gamma Ray Bursts
- Looking Into the Fireball: ROTSE-III and Swift Observations of Early GRB Afterglows
- Taxonomy of GRB optical light-curves: identification of a salient class of early afterglows
- On the consistency of the peculiar GRBs 060218 and 060614 with the Ep,i - Eiso correlation
- The Gamma Ray Burst Luminosity Function in the Light of the Swift 2-year Data
- The redshift distribution of gamma-ray bursts revisited
- Early optical observations of GRBs by the TAROT telescopes: period 2001-2008
- The Dark Side of ROTSE-III Prompt GRB Observations
- Gamma-Ray Burst Luminosity Functions Based On a Newly Discovered Correlation Between Peak Spectral Energy and V/V_max