TY - JOUR
T1 - WALLABY pilot survey : HI in the host galaxy of a fast radio burst
AU - Glowacki, M.
AU - Lee-Waddell, K.
AU - Deller, A.T.
AU - Deg, N.
AU - Gordon, A.C.
AU - Grundy, J.A.
AU - Marnoch, L.
AU - Shen, A.X.
AU - Ryder, S.D.
AU - Shannon, R.M.
AU - Wong, O.I.
AU - Dénes, H.
AU - Koribalski, B.S.
AU - Murugeshan, C.
AU - Rhee, J.
AU - Westmeier, T.
AU - Bhandari, S.
AU - Bosma, A.
AU - Holwerda, B.W.
AU - Prochaska, J.X.
PY - 2023/5/1
Y1 - 2023/5/1
N2 - We report on the commensal ASKAP detection of a fast radio burst (FRB), FRB 20211127I, and the detection of neutral hydrogen (H i) emission in the FRB host galaxy, WALLABY J131913-185018 (hereafter W13-18). This collaboration between the CRAFT and WALLABY survey teams marks the fifth, and most distant, FRB host galaxy detected in H i, not including the Milky Way. We find that W13-18 has an H i mass of M HI = 6.5 × 109 M ⊙, an H i-to-stellar mass ratio of 2.17, and coincides with a continuum radio source of flux density at 1.4 GHz of 1.3 mJy. The H i global spectrum of W13-18 appears to be asymmetric, albeit the H i observation has a low signal-to-noise ratio (S/N), and the galaxy itself appears modestly undisturbed. These properties are compared to the early literature of H i emission detected in other FRB hosts to date, where either the H i global spectra were strongly asymmetric, or there were clearly disrupted H i intensity map distributions. W13-18 lacks a sufficient S/N to determine whether it is significantly less asymmetric in its H i distribution than previous examples of FRB host galaxies. However, there are no strong signs of a major interaction in the optical image of the host galaxy that would stimulate a burst of star formation and hence the production of putative FRB progenitors related to massive stars and their compact remnants.
AB - We report on the commensal ASKAP detection of a fast radio burst (FRB), FRB 20211127I, and the detection of neutral hydrogen (H i) emission in the FRB host galaxy, WALLABY J131913-185018 (hereafter W13-18). This collaboration between the CRAFT and WALLABY survey teams marks the fifth, and most distant, FRB host galaxy detected in H i, not including the Milky Way. We find that W13-18 has an H i mass of M HI = 6.5 × 109 M ⊙, an H i-to-stellar mass ratio of 2.17, and coincides with a continuum radio source of flux density at 1.4 GHz of 1.3 mJy. The H i global spectrum of W13-18 appears to be asymmetric, albeit the H i observation has a low signal-to-noise ratio (S/N), and the galaxy itself appears modestly undisturbed. These properties are compared to the early literature of H i emission detected in other FRB hosts to date, where either the H i global spectra were strongly asymmetric, or there were clearly disrupted H i intensity map distributions. W13-18 lacks a sufficient S/N to determine whether it is significantly less asymmetric in its H i distribution than previous examples of FRB host galaxies. However, there are no strong signs of a major interaction in the optical image of the host galaxy that would stimulate a burst of star formation and hence the production of putative FRB progenitors related to massive stars and their compact remnants.
UR - https://hdl.handle.net/1959.7/uws:73682
U2 - 10.3847/1538-4357/acc1e3
DO - 10.3847/1538-4357/acc1e3
M3 - Article
SN - 0004-637X
VL - 949
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 25
ER -