Landing page for project GG087

GRB221009A is the brightest gamma-ray burst (GRB) ever observed. Located at redshift z=0.151, it represents the perfect candidate to measure the expansion of the circumburst material shocked by the GRB blast wave for the second time ever. Therefore, we propose to observe GRB221009A with the global-VLBI network at C-band, for a total of two 24 hr-long epochs over a year: with the proposed campaign, we will use the size growth to (i) infer the position of the termination shock radius and (ii) derive the global and microphysical parameters governing the long lasting afterglow emission by modelling its light curve and spectra self-consistently, accounting for size information from VLBI.

This data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia. The EVN archive itself has the DOI https://handle.test.datacite.org/10.17616/R3Z197