• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2021, Volume: 14, Issue: 8, Pages: 718-724

Original Article

Transit of the Sun across constellation Libra and variation of secondary gamma radiation flux in the month of October and November, 2020 at Udaipur, India

Received Date:09 February 2021, Accepted Date:03 March 2021, Published Date:15 March 2021


Background: During transit of the Sun across the constellation Libra in the month of October and November 2020 we experimentally observed the variation of secondary gamma radiation flux (SGR) at Udaipur (270 43’ 12.00”N, 750 28’ 48.01” E), India. We interpret such variation of SGR flux on the basis of gravitational lensing effect produced by the Sun and constellation Libra, radiation from constellation and gravitational pull-on background radiation by constellation Libra and Sun. Objective: The study is to observe secondary gamma radiation flux during transit of the Sun across the constellation Libra. Method: For this experimental study we used ground based NaI (Tl) Scintillation detector. Data were collected around time from 17.0 IST to 17.30 IST on date October 27, 28, 29, 30, 31 and November 2, 4, 6, 11, 12, 13, 14, 2020. The detector was pointed towards the Sun in this whole experimental study. Finding: Analyzed data showed significant variation of secondary gamma radiation flux (SGR) in month of October and November. Novelty: Due to transit of the Sun across the constellation Libra on the surface of Earth secondary gamma radiation flux varies. In the Month of October from 27 October to 31 October secondary gamma radiation flux decreases from 240084 to 230424 while in the month of November from November 2 onward dates up to 12 November the secondary radiation flux increases from 234414 to 242816 and then started to decrease on date 13, 14 November 2020.

Keywords: Cosmic radiation; solar radiation; secondary gamma radiation; the Sun; Libra constellation; gravitational pull; radiation from constellation; gravitational lensing effect


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© 2021 Pareek & Purohit.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)


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