Luis Felipe Rodríguez, IRyA
Host: Ramandeep Gill
Radio Observations of a Jupiter-Mass Binary Object (JuMBO24) in Orion
Using JWST near-infrared data of the inner Orion Nebula, Pearson & McCaughrean (2023) detected 40 binary systems they proposed to be Jupiter-Mass Binary Objects (JuMBOs) – although their actual nature is still in debate. Only one of the objects, JuMBO24, was detected by us in the radio continuum. We have used archive as well as new VLA observations to reach the following conclusions: 1) We set an upper limit of ≃ 6 km s−1 to the velocity of the radio source in the plane of the sky. This upper limit favors an origin for this source similar to that of stars, that is, from a stationary contracting core. 2) We searched unsuccessfully at 5 GHz for very compact continuum emission with the High Sensitivity Array (HSA). 3) The nature of the radio emission remains uncertain but the lack of strong variability (all VLA observations are consistent with a steady flux of ∼50 μJy), of detection on long HSA baselines, and of detectable circular polarization in VLA data do not favor a non-thermal origin.