radio halon.2
/ˌreɪdɪəʊˈheɪləʊ/, U.S. /ˌreɪdioʊˈheɪloʊ/ Astronomy.
A diffuse region of radio-emitting material surrounding an object such as a radio galaxy or a pulsar.
ΚΠ
1959 R. D. Davies & H. P. Palmer Radio Stud. of Universe iv. 47 In some cases the radio isophotes are far more extensive than their optical counterparts, suggesting an invisible radio halo around the source.
1973 Astron. & Astrophysics 23 145 Old pulsars are expected to be surrounded by radio halos caused by relativistic electrons generated by the pulsar and diffusing away.
1993 Monthly Notices Royal Astron. Soc. 263 31 Radio haloes are rarely found in galaxy clusters with cooling flows.
This is a new entry (OED Third Edition, June 2008; most recently modified version published online March 2022).
<
n.21959