Update on the angular resolution of GRAPES-3 experiment based on Moon shadow analysis-Reference-Cited by-同舟云学术

Update on the angular resolution of GRAPES-3 experiment based on Moon shadow analysis

Published:2023-09-29 Issue:13 Volume: Page:
ISSN:2666-4003
Container-title:SciPost Physics Proceedings
language:
Short-container-title:SciPost Phys. Proc.

Author:

Pattanaik Diptiranjan¹²,Ahmad S.³,Chakraborty M.¹,Dugad S. R.¹,Goswami Umananda Dev⁴,Gupta S. K.¹,Hariharan B.¹,Hayashi Y.⁵,Jagadeesan P.¹,Jain A.¹,Jain P.⁶,Kawakami S.⁵,Kojima H.⁷,Mahapatra S.²,Mohanty P. K.¹,Moharana R.⁸,Muraki Yasushi⁹,Nayak P. K.¹,Nonaka T.¹⁰,Oshima A.⁷,Pant B. P.⁸,Rameez Mohamed¹,Ramesh K.¹,Reddy L. V.¹,Shibata S.⁷,Varsi Fahim⁶,Zuberi M.¹

Affiliation:

1. Tata Institute of Fundamental Research

2. Utkal University

3. Aligarh Muslim University

4. Dibrugarh University

5. Osaka City University

6. Indian Institute of Technology Kanpur

7. Chubu University

8. Indian Institute of Technology Jodhpur

9. Nagoya University

10. Institute for Cosmic Ray Research

Abstract

GRAPES-3 is an extensive air shower array located at Ooty (11.6

^\circ

°N, 76.7

^\circ

°E, 2200 m a.s.l.) in southern India. Recently, the angular resolution of the GRAPES-3 array has been improved by correcting the shower front curvature based on the shower size and age. Here, we present the results of the angular resolution and pointing accuracy of the array through observation of the Moon shadow. We have analyzed the data for the period of 2014-2016 containing

\sim

∼ 3

\times

× 10

9 air shower events with a median energy of 15 TeV. A significant improvement in the angular resolution has been observed compared to the earlier analysis by the group through the Moon shadow method and is comparable to the arrays located at a 2 km higher altitude than the GRAPES-3 experiment.

Funder

Chubu University

Department of Atomic Energy, Government of India

Nagoya University

University of Tokyo

Publisher

Stichting SciPost

Subject

General Medicine

Link

https://scipost.org/10.21468/SciPostPhysProc.13.033/pdf

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