Testing the gamma-ray burst variability/peak luminosity correlation on a Swift homogeneous sample

Abstract

We test the gamma-ray burst correlation between temporal variability and peak luminosity of the $\gamma$-ray profile on a homogeneous sample of 36 Swift/BAT GRBs with firm redshift determination. This is the first time that this correlation can be tested on a homogeneous data sample. The correlation is confirmed, as long as the 6 GRBs with low luminosity (<5x10^{50} erg s^{-1} in the rest-frame 100-1000 keV energy band) are ignored. We confirm that the considerable scatter of the correlation already known is not due to the combination of data from different instruments with different energy bands, but it is intrinsic to the correlation itself. Thanks to the unprecedented sensitivity of Swift/BAT, the variability/peak luminosity correlation is tested on low-luminosity GRBs. Our results show that these GRBs are definite outliers.

Accepted for Publication in MNRAS. 10 pages, 5 figures, 3 tables

References in corpus (28)

• The Burst Alert Telescope (BAT) on the Swift MIDEX Mission
• Intrinsic spectra and energetics of BeppoSAX Gamma-Ray Bursts with known redshifts
• GRB Formation Rates inferred from the Spectral Peak Energy - Luminosity Relation
• Connection Between Energy-dependent Lags And Peak Luminosity In Gamma-ray Bursts
• The Fourth BATSE Gamma-Ray Burst Catalog (Revised)
• The Ep,i - Eiso correlation in GRBs: updated observational status, re-analysis and main implications
• A mean redshift of 2.8 for Swift gamma-ray bursts
• Model-Independent Multi-Variable Gamma-Ray Burst Luminosity Indicator and Its Possible Cosmological Implications
• A Possible Cepheid-Like Luminosity Estimator for the Long Gamma-Ray Bursts
• Making a Short Gamma-Ray Burst from a Long one: Implications for the Nature of GRB 060614
• Gamma Ray Bursts: new rulers to measure the Universe
• Probing Cosmic Chemical Evolution with Gamma-Ray Bursts: GRB060206 at z=4.048
• X-ray Rich GRB, Photospheres and Variability
• Peak Luminosity-Spectral Lag Relation Caused by the Viewing Angle of the Collimated Gamma-Ray Bursts
• On the consistency of the peculiar GRBs 060218 and 060614 with the Ep,i - Eiso correlation
• The peak luminosity - peak energy correlation in GRBs
• A new method optimized to use Gamma Ray Bursts as cosmic rulers
• On The Spectral Energy Dependence of Gamma-Ray Burst Variability
• Luminosity and Variability of Collimated Gamma-ray Bursts
• Discovery of a tight correlation between pulse lag/luminosity and jet-break times: a connection between gamma-ray burst and afterglow properties
• Confirmation of the $\eps$ -- $\eiso$ (Amati) relation from the X-ray flash XRF 050416A observed by Swift/BAT
• Beam Models for Gamma-Ray Bursts Sources: Outflow Structure, Kinematics and Emission Mechanisms
• The GRB Variability/Peak Luminosity Correlation: new results
• The slope of the GRB Variability/Peak Luminosity Correlation
• Testing the GRB Variability/Peak Luminosity correlation using the pseudo-redshifts of a large sample of BATSE GRBs
• Improved Correlation between the Variability and Peak Luminosity of Gamma-Ray Bursts
• Gamma-Ray Burst Intensity Distributions
• GRB050223: A faint Gamma-Ray Burst discovered by Swift

Cited by in corpus (21)

• Precursors of short gamma-ray bursts
• Gamma-ray Burst Cosmology
• Comparing the spectral lag of short and long gamma-ray bursts and its relation with the luminosity
• The Swift/Fermi GRB 080928 from 1 eV to 150 keV
• Gamma Ray Burst Prompt correlations
• The Possible Impact of GRB Detector Thresholds on Cosmological Standard Candles
• Individual power density spectra of Swift gamma-ray bursts
• A comprehensive statistical study on gamma-ray bursts
• Lowly polarized light from a highly magnetized jet of GRB 190114C
• GRB081028 and its late-time afterglow re-brightening
• Average power density spectrum of Swift long gamma-ray bursts in the observer and in the source rest frames
• The early afterglow of GRB 190829A
• Testing the E_p,i - L_p,iso - T_0.45 correlation on a BeppoSAX and Swift sample of gamma-ray bursts
• Does The Addition of a Duration Improve the L_iso - E_peak Relation For Gamma-Ray Bursts?
• Gamma Ray Burst studies with THESEUS
• Correlation between peak energy and Fourier power density spectrum slope in gamma-ray bursts
• A Multilevel Empirical Bayesian Approach to Estimating the Unknown Redshifts of 1366 BATSE Catalog Long-Duration Gamma-Ray Bursts
• Testing a new luminosity/redshift indicator for $\gamma$-ray bursts
• Hubble Diagram of Gamma-Rays Bursts calibrated with Gurzadyan-Xue Cosmology
• Possible correlations between gamma-ray burst and its host galaxy offset
• A New Frequency-Luminosity Relation for Long GRBs?