SIMBAD references

2024MNRAS.529.1814H - Mon. Not. R. Astron. Soc., 529, 1814-1826 (2024/April-1)

Milliarcsecond localization of the hyperactive repeating FRB 20220912A.

HEWITT D.M., BHANDARI S., MARCOTE B., HESSELS J.W.T., NIMMO K., KIRSTEN F., BACH U., BEZRUKOVS V., BHARDWAJ M., BLAAUW R., BRAY J.D., BUTTACCIO S., CORONGIU A., GAWRONSKI M.P., GIROLETTI M., KEIMPEMA A., MACCAFERRI G.M., PARAGI Z., TRUDU M., SNELDERS M.P., VENTURI T., WANG N., WILLIAMS-BALDWIN D.R.A., WRIGLEY N.H., YANG J. and YUAN J.P.

Abstract (from CDS):

We present very long-baseline interferometry (VLBI) observations of the hyperactive repeating FRB 20220912A using the European VLBI Network (EVN) outside of regular observing sessions (EVN-Lite). We detected 150 bursts from FRB 20220912A over two observing epochs in 2022 October. Combining the burst data allows us to localize FRB 20220912A to a precision of a few milliarcseconds, corresponding to a transverse scale of less than 10 pc at the distance of the source. This precise localization shows that FRB 20220912A lies closer to the centre of its host galaxy than previously found, although still significantly offset from the host galaxy's nucleus. On arcsecond scales, FRB 20220912A is coincident with a persistent continuum radio source known from archival observations; however, we find no compact persistent emission on milliarcsecond scales. The 5σ upper limit on the presence of such a compact persistent radio source is 120 μJy, corresponding to a luminosity limit of (D/362.4 Mpc)$^2\, 1.8\times 10^{28}$erg s–1 Hz–1. The persistent radio emission is thus likely to be from star formation in the host galaxy. This is in contrast to some other active FRBs, such as FRB 20121102A and FRB 20190520B.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): techniques: high angular resolution - radio continuum: transients - fast radio bursts

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 19

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