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HI 21cm emission observations of nearest GRB host galaxy

Maryam Arabsalmani

Évènements associés

  • Le lundi 19 juin 2017 de 11:00 à 12:00

The host galaxy of GRB 980425, the nearest known GRB only 37 Mpc away, hosts an uncommonly bright Wolf-Rayet region about 800 pc from the location of the GRB, and with extreme star formation properties whose existence was somewhat of a mystery. I will present our study on mapping the HI 21 cm emission from this host galaxy, using the Giant Metrewave Radio Telecope (GMRT) array. Using the hybrid configuration of GMRT we were able to map the spatial and velocity structure of the atomic gas at varying spatial resolutions. Our study sheds light on the cause behind the extreme properties of the WR region and the GRB environment. I will also report on our recent simulations on modeling a system with properties similar to the host galaxy of GRB 980425.