Programme

I.8 -- Invited, VCTP-46

Date: Tuesday, 5 October 2021

Time: 16:00 - 16:30

Study on radio emission from extensive air showers by using MGMR3D

Trinh Thi Ngoc Gia (1), Olaf Scholten (2), Nguyen Thanh Phong (3), Dang Trung Si (4), Nguyen Thi Kim Ngoc (3), Huynh Anh Huy (1)

(1) Physics Education Department, School of Education, Can Tho University; (2) Vrije Universiteit Brussel, Dienst ELEM, Brussels, Belgium; (3) Physics Department, School of Science, Can Tho University; (4) Chau Van Liem High School, Can Tho City

High-energy cosmic rays going into the atmosphere can generate a particle avalanche called an extensive air shower. The charged particles in the air shower emit radiation. During thunderstorms, radio emission from extensive air showers is influenced by atmospheric electric fields. Thus, strong electric fields in the atmosphere can be determined by radio emission from extensive air showers. MGMR3D is a code that calculates the complete radio footprint, i.e. intensity, polarization and pulse shapes, for a parametrized shower-current density using a semi-analytic approach. This non-Monte-Carlo code is fast (typically 10 seconds for a complete footprint) and thus can be used in a chi-square optimization calculation of atmospheric electric fields. In order to improve parametrization for MGMR3D, a comparison between the results of a microscopic model of radio emission, CoREAS, and the ones of MGMR3D is made. Acknowledgement: This research is funded by the Vietnam National Foundation for Science andTechnology Development (NAFOSTED) under Grant 103.01-2019.378.

Presenter: Trịnh Thị Ngọc Gia