Northern Cross detection of a burst from the repeating FRB 20240209A at 408 MHz

ATel #16692; A. Geminardi (IUSS Pavia), D. Pelliciari (INAF-IRA), P. Esposito (IUSS Pavia), G. Bernardi (INAF-IRA), M. Pilia (INAF-OAC), G. Naldi (INAF-IRA) on behalf of a larger collaboration
on 5 Jul 2024; 10:27 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Paolo Esposito (paoloesp@iasf-milano.inaf.it)

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The Northern Cross FRB collaboration reports the detection of a burst from the recently announced FRB repeater FRB 20240209A (ATel #16670).

We observed the source from 2024-07-01 to 2024-07-04 for a total on-source time of 20 hours. Observations were carried out with a 16 MHz bandwidth at a central frequency of 408 MHz, with a 14.468 kHz channel width and a 138.24 μs sampling time. The FRB search was performed using Heimdall (Barsdell et al. 2012) and FETCH (Agarwal et al. 2020) spanning a DM range between 160 and 200 pc cm⁻³ with signal-to-noise ratio > 7.

The topocentric arrival time of the burst is 2024-07-02 21:24:24.540 UTC at 400 MHz at Medicina and the correspondent TDB at infinite frequency is 2024-07-02 21:22:42.718 UTC. The inferred DM for the burst was 176.56 pc cm⁻³, which is consistent with the previously reported detections (ATel #16670). The burst has a fluence of ∼ 90.5 ± 6.3 Jy ms and the best Gaussian fit of the peak returns a full width at half maximum of 11.9 ± 1.4 ms.

We will continue the monitoring over the next weeks. The link below shows the waterfall plot for this burst.

De-dispersed and DM-Time plots of the burst