|Omar Ould-Boukattine, Richard Blaauw & Jason Hessels
| Earlier this week, on Feb 5th, we detected a bright FRB originating from the recently discovered repeater FRB 20240114A using the Westerbork RT-1 telescope. We have been monitoring this source at a central frequency of 327 MHz (P-band) for up to 10 hours per day since its discovery and publication by CHIME/FRB (Jan 26th, ATel #16420).
After 19 hours of observing we had a burst detection with a peak signal-to-noise of 8-sigma. What is remarkable about the detection is the brightness of the burst. The system equivalent flux density (SEFD) of the P-band receiver is quite high: 2100 Jy. Therefore, this 8-sigma detection corresponds to a burst fluence of ~220 Jy ms, making this a very bright FRB, despite the low S/N of this detection. The Westerbork RT-1 telescope remains one of the only telescopes in Europe able to observe at P-band.
The figure shows the Westerbork RT-1 telescope and the dynamic spectrum of the burst where we plot frequency channels vs. time. The data has been corrected for the effects of dispersion using a dispersion measure (DM) of 527.7 pc cm^-3. The burst is plotted at a time and frequency resolution of 1024 us and 15.625 kHz, respectively. Read all the details in the Astronomers telegram!
We will continue to monitor repeating FRB sources with the RT-1 telescope and observe the brightest FRBs in the Universe. This research will be part of the PhD thesis of Omar Ould-Boukattine, member of the AstroFlash team.
Hungry for more reading material? Check out this exciting paper / daily image where we try and connect repeating and non-repeating FRBs while we make use of an observational campaign which totals over 3500 hours. Or find the WesterFlash poster in the ASTRON building in the hall across from the operators room.