| Name: | Yash Bhusare |
| Affiliation: | TIFR-NCRA |
| Conference ID : | ASI2024_972 |
| Title : | GMRT Regular Observations Of fast Transients (GROOT)- FRB20220912A: Burst Properties and Morphologies |
| Authors : | Yash Bhusare, Ajay Kumar, Arpan Pal, Banshi Lal, Puja Majee, Shriharsh Tendulkar, Visweshwar R. Marthi, Yogesh Maan |
| Authors Affiliation: | Yash Bhusare, Ajay Kumar, Arpan Pal, Banshi Lal, Puja Majee, Shriharsh Tendulkar, Visweshwar R. Marthi, Yogesh Maan, Affiliation ( National Centre for Radio Astrophysics, Pune-411007,India) |
| Mode of Presentation: | Poster |
| Abstract Category : | Galaxies and Cosmology |
| Abstract : | FRB 20220912A, a repeating fast radio burst, was in a state of high activity following its discovery in late 2022 last by CHIME/FRB. During this state, it was localized by DSA. Multiple follow-up observations have been conducted for FRB 20220912A during and after its hyperactive period, but most of them were at L or S-band.
We have been monitoring FRB 20220912A at low frequencies ranging from 300 MHz to 750 MHz using the upgraded Giant Metrewave Radio Telescope (uGMRT). We first observed FRB 20220912A on November 22nd and 24th, 2023 (ATel #15806). On the 24th, we observed simultaneously in two bands of uGMRT (300-500 MHz and 550-750 MHz). After that, we have been monitoring FR20220912A at regular intervals since January 2023. In a total of 11.3 hours of on-source time, our analysis has yielded over 350 bursts so far.
We have fitted the frequency-resolved profiles of all the bursts and derived their properties. We will present a detailed analysis of the burst properties, such as variations of dispersion measure, temporal and spectral width, and rate, with observing frequency and epoch. During all the observations, we recorded baseband data, enabling us to study the microstructure of the bursts and their properties. We shall show the detailed high-time resolution morphology of some noteworthy bursts. We will also present detection of a potential persistent radio source (PRS) associated with the FRB 20220912A. |
