Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A

Fong, W.; Dong, Yuxin; Leja, Joel; Bhandari, Shivani; Day, Cherie K.; Deller, Adam T.; Kumar, P.; Prochaska, J. X.; Scott, Danica R.; Bannister, K. W.; Eftekhari, T.; Gordon, Alexa C.; Heintz, K. E.; James, C. W.; Kilpatrick, C. D.; Mahony, E. K.; Escorial, A. Rouco; Ryder, S. D.; Shannon, R. M.; Tejos, Nicolás

doi:10.3847/2041-8213/ac242b

Cited by 65 publications

(64 citation statements)

References 123 publications

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“…The position of FRB 20201124A reported here is in agreement (within 2-σ) of the original EVN localisation reported in Marcote et al (2021) (which was determined using only the burst data from Epoch 1). Our position for FRB 20201124A is also in agreement with the independent measurements of the VLA (Ravi et al 2021), the Australian Square Kilometre Array Pathfinder (ASKAP) (Fong et al 2021), and the upgraded Giant Meterwave Radio Telescope (uGMRT; if one includes the estimated systematic errors they discuss; Wharton et al 2021a). These studies are approximately 3 orders of magnitude less precise than the localisation presented here (a comparison is shown in Figure 2).…”

Section: Localisationsupporting

confidence: 86%

“…The host galaxy of FRB 20201124A, SDSS J050803.48+260338.0 or hereafter J0508+2603 (Day et al 2021) is a massive, star-forming galaxy (Ravi et al 2021;Fong et al 2021) at a redshift of z = 0.098 (Kilpatrick et al 2021). The VLA (D-configuration; Ricci et al 2021) detected unresolved compact persistent emission at 3 GHz and 9 GHz, in addition to the uGMRT (Wharton et al 2021b) detection of unresolved persistent emission at 600 MHz.…”

Section: The Local Environment Of Frb 20201124amentioning

confidence: 99%

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Milliarcsecond localisation of the repeating FRB 20201124A

Nimmo,

Hewitt,

Hessels

et al. 2021

Preprint

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Very long baseline interferometric (VLBI) localisations of repeating fast radio bursts (FRBs) have demonstrated a diversity of local environments: from nearby star-forming regions to globular clusters. Here we report the VLBI localisation of FRB 20201124A using an ad-hoc array of dishes that also participate in the European VLBI Network (EVN). In our campaign, we detected 18 total bursts from FRB 20201124A at two separate epochs. By combining the visibilities from both observing epochs, we were able to localise FRB 20201124A with a 1-σ error of 4.5 milliarcseconds (mas). We use the relatively large burst sample to investigate astrometric accuracy, and find that for 20 baselines ( 7 dishes) that we can robustly reach milliarcsecond precision even using single-burst data sets. Sub-arcsecond precision is still possible for single bursts, even when only ∼ six baselines (four dishes) are available. We explore two methods for determining the individual burst positions: the peaks of the dirty maps and a Gaussian fit to the cross fringe pattern on the dirty maps. We found the latter to be more reliable due to the lower mean and standard deviation in the offsets from the FRB position. Our VLBI work places FRB 20201124A 705±26 mas (1-σ errors) from the optical centre of the host galaxy, and consistent with originating from within the recently-discovered extended radio structure associated with star-formation in the host galaxy. Future high-resolution optical observations, e.g. with Hubble Space Telescope, can determine the proximity of our FRB 20201124A VLBI position to nearby knots of star formation.

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Section: Localisationsupporting

confidence: 86%

Section: The Local Environment Of Frb 20201124amentioning

confidence: 99%

Milliarcsecond localisation of the repeating FRB 20201124A

Nimmo,

Hewitt,

Hessels

et al. 2021

Preprint

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“…Another active repeater FRB 20201124A (Lanman et al 2021;Kumar et al 2021;Nimmo et al 2021;Hilmarsson et al 2021) is found in a Milky-Way-sized, metal-rich, barred-spiral host galaxy at z = 0.098 (Xu et al 2021;Fong et al 2021;Ravi et al 2021;Piro et al 2021). This repeater indicates a significant, irregular, variation of the Faraday rotation over 36 days.…”

Section: Introductionmentioning

confidence: 92%

Temporal Scattering, Depolarization, and Persistent Radio Emission from Magnetized Inhomogeneous Environments Near Repeating Fast Radio Burst Sources

Yang,

Lu,

Feng

et al. 2022

Preprint

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Some repeating fast radio burst (FRB) sources exhibit complex polarization behaviors, including frequency-dependent depolarization, variation of rotation measure (RM), and oscillating spectral structures of polarized components. Very recently, Feng et al. (2022) reported that active repeaters exhibit conspicuous frequency-dependent depolarization and a strong correlation between RM scatter (σ RM ) and the temporal scattering time (τ s ), σ RM ∝ τ 1.0±0.2 s , both of which can be well described by multipath propagation through a magnetized inhomogeneous plasma screen. This observation strongly suggests that the temporal scattering and RM scatter originate from the same region. Besides, a particular finding of note in Feng et al. ( 2022) is that the FRBs with compact persistent radio sources (PRS) tend to have extreme σ RM . In this work, we analyze the temporal scattering, RM scatter and the PRS emission contributed by the magnetized inhomogeneous plasma screen near an FRB source. The behaviors of the RM scatter imply that the magnetized plasma environment is consistent with a supernova remnant or a pulsar wind nebula, and the predicted σ RM -τ s relation is σ RM ∝ τ (0.54−0.83) s for different astrophysical scenarios. We also show that the specific luminosity of a PRS should have a positive correlation with the RM contributed by the plasma screen. This is consistent with the observations of FRB 121102 and FRB 190520B.

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“…This places a strong upper limit on the persistent source luminosity of 𝜈𝐿 𝜈 7.6 × 10 35 erg s −1 at 1.6 GHz, which is three orders of magnitude lower than that of FRB 20121102A. Recently, the CHIME/FRB collaboration announced heightened activity in the repeating FRB 20201124A (Chime/FRB Collaboration 2021), which was localised to a host galaxy at a redshift of 𝑧 = 0.0979 ± 0.0001 (Fong et al 2021). Persistent radio emission was detected by the upgraded Giant Metrewave Radio Telescope (uGMRT) (Wharton et al 2021) and the Karl G. Jansky Very Large Array (JVLA) (Ricci et al 2021) on angular scales of a few arcseconds, but resolved out to scales of ∼ 0.1 arcseconds with the European VLBI Network (Marcote et al 2021).…”

Section: Introductionmentioning

confidence: 98%

A MeerKAT, e-MERLIN, H.E.S.S. and Swift search for persistent and transient emission associated with three localised FRBs

Chibueze,

Caleb,

Spitler

et al. 2022

Preprint

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We report on a search for persistent radio emission from the one-off Fast Radio Burst (FRB) 20190714A, as well as from two repeating FRBs, 20190711A and 20171019A, using the MeerKAT radio telescope. For FRB 20171019A we also conducted simultaneous observations with the High Energy Stereoscopic System (H.E.S.S.) in very high energy gamma rays and searched for signals in the ultraviolet, optical, and X-ray bands. For this FRB, we obtain a UV flux upper limit of 1.39 × 10 −16 erg cm −2 s −1 Å −1 , X-ray limit of ∼ 6.6 × 10 −14 erg cm −2 s −1 and a limit on the very-high-energy gamma-ray flux Φ(𝐸 > 120 GeV) < 1.7 × 10 −12 erg cm −2 s −1 . We obtain a radio upper limit of ∼15𝜇Jy beam −1 for persistent emission at the locations of both FRBs 20190711A and 20171019A, but detect diffuse radio emission with a peak brightness of ∼53𝜇Jy beam −1 associated with FRB 20190714A at 𝑧 = 0.2365. This represents the first detection of the radio continuum emission potentially associated with the host (galaxy) of FRB 20190714A, and is only the third known FRB to have such an association. Given the possible association of a faint persistent source, FRB 20190714A may potentially be a repeating FRB whose age lies between that of FRB 20121102A and FRB 20180916A. A parallel search for repeat bursts from these FRBs revealed no new detections down to a fluence of 0.08 Jy ms for a 1 ms duration burst.

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Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A

Cited by 65 publications

References 123 publications

Milliarcsecond localisation of the repeating FRB 20201124A

Milliarcsecond localisation of the repeating FRB 20201124A

Temporal Scattering, Depolarization, and Persistent Radio Emission from Magnetized Inhomogeneous Environments Near Repeating Fast Radio Burst Sources

A MeerKAT, e-MERLIN, H.E.S.S. and Swift search for persistent and transient emission associated with three localised FRBs

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