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XXV DAE-BRNS High Energy Physics Symposium 2022

12–16 Dec 2022
IISER Mohali
Asia/Kolkata timezone

10-300 TeV Isotropic Diffuse Gamma-rays with the GRAPES-3 Experiment

15 Dec 2022, 15:15
15m
LH5 (IISER Mohali)

LH5

IISER Mohali

Lecture Hall Complex, IISER Mohali, Sector 81, Knowledge city, SAS Nagar, Punjab, India

Speaker

Mr B.P. Pant (Indian Institute of Technology Jodhpur)

Description

Diffuse gamma-ray emission by interactions of ultra-high-energy cosmic rays (UHECRs) with the 2.7K cosmic microwave background (CMB) is expected to have an isotropic distribution around 10—100 TeV. This radiation carries the information on the distribution of energetic sources and hence the cosmological evolution of the universe. The GRAPES-3 array comprises ∼ 400 densely packed scintillator detectors deployed over an area of 25,000 m$^2$ and a large area tracking muon telescope (560 m$^2$). The muon telescope has the ability to differentiate the gamma-rays from charged cosmic rays through their muon content. Based on the data measured by the GRAPES-3 experiment, we place 90% C.L. upper limits on the intensity of gamma-rays relative to cosmic rays at energies from 10–300TeV.

Session Astroparticle Physics and Cosmology

Author

Mr B.P. Pant (Indian Institute of Technology Jodhpur)

Co-authors

Medha Chakraborty Shashi Dugad (Tata Institute of Fundamental Research) U.D. Goswami (Dibrugarh University, Dibrugarh 786004, India) S.K. Gupta (Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India) B Hariharan (Tata Insitute of Fundamental Research) Y Hayashi (Graduate School of Science, Osaka City University) P Jagadeesan (Tata Institute of Fundamental Research) Atul Jain (Tata Institute of Fundamental Research) Pankaj Jain (I.I.T. Kanpur) S Kawakami (Graduate School of Science, Osaka City University) H. Kojima (College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan) S. Mahapatra (Utkal University, Bhubaneshwar 751004, India) P.K. Mohanty (Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India) R. Moharana (Indian Institute of Technology Jodhpur) Y Muraki (Institute for Space-Earth Environmental Research, Nagoya University) Dr Pranaba Nayak (Tata Institute of Fundamental Research) T. Nonaka (Institute for Cosmic Ray Research, Tokyo University, Kashiwa, Chiba 277-8582, Japan) A. Oshima (College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan) D Pattanaik (Tata institute of fundamental research) A. K. Pradhan (Indian Institute of Technology Jodhpur) Mohamed Rameez (Tata Institute of Fundamental Research) KAVITI RAMESH (TIFR) LV Reddy (Tata Institute of Fundamental Research) S. Shibata (College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan) Fahim Varsi (Indian Institute of Technology, Kanpur, India) M. Zuberi (Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India)

Presentation materials

bhanu_DAE-HEP22.pdf
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