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Low-frequency, wideband study of an active repeater, FRB 20240114A, with the GMRT

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arxiv 2405.09749 v3 pith:FXZ2UD7X submitted 2024-05-16 astro-ph.HE

Ujjwal Panda , Jayanta Roy , Siddhartha Bhattacharyya , Chahat Dudeja , Sanjay Kudale This is my paper · ORCID
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keywords distributionburstsmathrmwaitactiveemissionfollowlog-normal
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abstract

We report the detection of 167 bursts from an active repeater, FRB 20240114A, using the uGMRT. The observations were carried over a frequency range of 300 $-$ 750 MHz, and on 4 different dates over a period of 6 months. Our analysis indicates that the FRB's emission properties are evolving, with both the median flux and emission rate of the bursts decreasing over time. The properties of the bursts also vary widely, with a wide range of intrinsic widths (0.246 to 39.364 ms), scattering timescales (0.004 to 28.289 ms), dispersion measures (524.07 to 533.56 pc cm$^{-3}$), and band occupancies (9 to 180 MHz). The distribution for the waiting time, $t_{\mathrm{wait}}$, is bi-modal, and follows a Weibull distribution, with a shape parameter $k = 0.33$; however, when the two distributions are fit separately, they follow a Weibull distribution with $k = 0.63$ for $t_{\mathrm{wait}} < 1$ s, and a log-normal distribution with a width of $\sigma = 1.28$ for $t_{\mathrm{wait}} > 1$ s. The isotropic energy distribution is seen to follow a log-normal distribution as well, with a width of $\sigma = 0.83$.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A flaring radio counterpart to a fast radio burst reveals a newborn magnetized engine

    astro-ph.HE 2025-01 conditional novelty 8.0 of 10

    A compact flaring radio source detected 26 days after FRB 20240114A's first burst shows a synchrotron self-absorption peak, implying a newborn, highly magnetized FRB engine.

  2. The CHIME/FRB Discovery of the Extremely Active Fast Radio Burst Source FRB 20240114A

    astro-ph.HE 2025-05 conditional novelty 6.0 of 10

    FRB 20240114A, discovered by CHIME/FRB, is one of the most prolific repeating fast radio burst sources known: CHIME sees a stable dispersion measure near 528 pc cm^-3, a rotation measure near +320 rad m^-2, and a burs...

  3. Calibrating $\rm{DM_{IGM}}-z$ relation using host galaxies of FRBs

    astro-ph.GA 2025-07 reject novelty 5.0 of 10

    A claimed tight sSFR-DM_exc correlation is used to calibrate the DM_IGM-z relation, but the improvement is evaluated on the same data used to fit the model.

  4. Low-frequency Probes of the Persistent Radio Sources associated with Repeating FRBs

    astro-ph.HE 2024-12 accept novelty 5.0 of 10

    A 650 MHz detection toward repeating FRB 20240114A is a persistent radio source in its host galaxy, while two other repeaters show only star formation or upper limits.

  5. Reconciling the Waiting Time Peaks Variations of Repeating FRBs with an Eccentric Neutron Star--White Dwarf Binary

    astro-ph.HE 2025-04 conditional novelty 4.0 of 10

    The decreasing long-duration waiting-time peaks of FRBs 20121102A and 20201124A are attributed to orbital decay of eccentric neutron star-white dwarf binaries through stable or unstable mass transfer and common-envelo...

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