Updated results on the cosmic ray energy spectrum and composition from the GRAPES-3 experiment
F. Varsi, S. Ahmad, M. Chakraborty, A. Chandra, S. R. Dugad, U. D. Goswami, S. K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain , P. Jain, S. Kawakami, H. Kojima, S. Mahapatra, P. K. Mohanty, R. Moharana, Y. Muraki, P. K. Nayak, T. Nonaka, A. Oshima, B. P. Pant, D. Pattanaik, G. Pradhan, M. Rameez, K. Ramesh, L. V. Reddy, R. Sahoo, R. Scaria, S. Shibata, K. Tanaka, M. Zuberi
SciPost Phys. Proc. 13, 031 (2023) · published 29 September 2023
- doi: 10.21468/SciPostPhysProc.13.031
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21st International Symposium on Very High Energy Cosmic Ray Interactions
Abstract
Here, we present the updated results on the cosmic ray energy spectrum and composition analysis from the GRAPES-3 experiment over the energy range of 50 TeV to 1000 TeV since ICRC 2021. The simulation of cosmic ray showers was performed using the post-LHC high energy hadronic interaction model QGSJetII-04 and low energy hadronic model FLUKA. A detailed GEANT4 simulation of the GRAPES-3 muon telescope was performed. The composition was obtained by fitting simulated muon multiplicity distributions for proton, helium, nitrogen, aluminium, and iron primaries to the observed data. The energy spectrum connects to the direct measurements with a fairly good agreement in flux.
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Fahim Varsi,
- 2 S. Ahmad,
- 3 M. Chakraborty,
- 2 A. Chandra,
- 3 S. R. Dugad,
- 4 Umananda Dev Goswami,
- 3 S. K. Gupta,
- 3 B. Hariharan,
- 5 Y. Hayashi,
- 3 P. Jagadeesan,
- 3 A. Jain,
- 1 P. Jain,
- 5 S. Kawakami,
- 6 H. Kojima,
- 7 S. Mahapatra,
- 3 P. K. Mohanty,
- 8 R. Moharana,
- 9 Yasushi Muraki,
- 3 P. K. Nayak,
- 10 T. Nonaka,
- 6 A. Oshima,
- 8 B. P. Pant,
- 3 7 Diptiranjan Pattanaik,
- 11 G. Pradhan,
- 3 Mohamed Rameez,
- 3 K. Ramesh,
- 3 L. V. Reddy,
- 11 R. Sahoo,
- 11 R. Scaria,
- 6 S. Shibata,
- 12 K. Tanaka,
- 3 M. Zuberi
- 1 भारतीय प्रौद्योगिकी संस्थान कानपुर / Indian Institute of Technology Kanpur [IITK]
- 2 আলিগড় মুসলিম বিশ্ববিদ্যালয় / Aligarh Muslim University [AMU]
- 3 टाटा मूलभूत अनुसंधान संस्थान / Tata Institute of Fundamental Research [TIFR]
- 4 ডিব্রুগড় বিশ্ববিদ্যালয় / Dibrugarh University
- 5 大阪市立大学 / Osaka City University [OCU]
- 6 中部大学 / Chubu University
- 7 उत्कल विश्वविद्यालय / Utkal University
- 8 भारतीय प्रौद्योगिकी संस्थान राजस्थान,राष्ट्रीय प्रौद्योगिकी संस्थान / Indian Institute of Technology Jodhpur [IITJ]
- 9 名古屋大学 / Nagoya University
- 10 東京大学宇宙線研究所 / Institute for Cosmic Ray Research [ICRR]
- 11 भारतीय प्रौद्योगिकी संस्थान इंदौर / Indian Institute of Technology Indore [IITI]
- 12 広島市立大学 / Hiroshima City University [HCU]