What powers Ly a blobs?
Ao, Y; Matsuda, Y; Beelen, A; Henkel, C; Cen, R; De Breuck, C; Francis, Paul; Kovacs, A; Lagache, G; Lehnert, Matthew; Mao, Minnie Y; Menten, K M; Norris, R.P.; Omont, A; Tatemasu, K.; Weiß, A.; Zheng, Z.
Lyα blobs (LABs) are spatially extended Lyα? nebulae seen at high redshift. The origin of Lyα emission in the LABs is still unclear and under debate. To study their heating mechanism(s), we present Australia Telescope Compact Array (ATCA) observations of the 20 cm radio emission and Herschel PACS and SPIRE measurements of the far-infrared (FIR) emission toward the four LABs in the protocluster J2143-4423 at z = 2.38. Among the four LABs, B6 and B7 are detected in the radio with fluxes of 67±17...[Show more]
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