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Testing the Intrinsic Randomnesses in the Angular Distributions of Gamma-Ray Bursts
Astrophysics · Submitted 3 Dec 1999
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Both tests suggest intrinsic non-randomnesses for the intermediate subclass; for the remaining three cases only the correlation function method.
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The abstract, sentence by sentence
The counts-in-cells and the two-point angular correlation function method are used to test the randomnesses in the angular distributions of both the all gamma-ray bursts collected at BATSE Catalog, and also their three subclasses ("short", "intermediate", "long"). The methods elimate the non-zero sky-exposure function of BATSE instrument. Both tests suggest intrinsic non-randomnesses for the intermediate subclass; for the remaining three cases only the correlation function method. The confidence levels are between 95% and 99.9%. Separating the GRBs into two parts ("dim half" and "bright half", respectively) we obtain the result that the "dim" half shows a non-randomness on the 99.3% confidence level from the counts-in-cells test.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The counts-in-cells and the two-point angular correlation function method are used to test the randomnesses in the angular distributions of both the all gamma-ray bursts collected at BATSE Catalog, and also their three subclasses ("short", "intermediate", "long"). | method 0.82 | 0.91 | 0.07 | asserted 0.86 |
| s1 | The methods elimate the non-zero sky-exposure function of BATSE instrument. | method 0.99 | 0.77 | 0.03 | asserted 1.00 |
| s2 | Both tests suggest intrinsic non-randomnesses for the intermediate subclass; for the remaining three cases only the correlation function method. | result 1.00 | 0.93 | 0.67 | hedged possibility 0.77 |
| s3 | The confidence levels are between 95% and 99.9%. | result 1.00 | 0.89 | 0.11 | asserted 0.99 |
| s4 | Separating the GRBs into two parts ("dim half" and "bright half", respectively) we obtain the result that the "dim" half shows a non-randomness on the 99.3% confidence level from the counts-in-cells test. | result 1.00 | 0.94 | 0.14 | asserted 1.00 |
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The paper
Original abstract
The counts-in-cells and the two-point angular correlation function method are used to test the randomnesses in the angular distributions of both the all gamma-ray bursts collected at BATSE Catalog, and also their three subclasses ("short", "intermediate", "long"). The methods elimate the non-zero sky-exposure function of BATSE instrument. Both tests suggest intrinsic non-randomnesses for the intermediate subclass; for the remaining three cases only the correlation function method. The confidence levels are between 95% and 99.9%. Separating the GRBs into two parts ("dim half" and "bright half", respectively) we obtain the result that the "dim" half shows a non-randomness on the 99.3% confidence level from the counts-in-cells test.
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