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A uGMRT search for radio emission from planets around evolved stars.
- Source :
-
Monthly Notices of the Royal Astronomical Society . Apr2024, Vol. 529 Issue 2, p1161-1168. 8p. - Publication Year :
- 2024
-
Abstract
- In this work, we present the results from a study using the Giant Meterwave Radio Telescope (GMRT) to search for radio emission from planets around three evolved stars namely α Tau, β UMi, and β Gem. Both α Tau and β UMi host massive ∼ 6 MJ mass planets at about ∼1.4 au from the central star, while β Gem is host to a 2.9 MJ mass planet at 1.7 au from the host star. We observe α Tau and β UMi at two upgraded GMRT bands: band 3 (250–500 MHz) and band 4 (550–900 MHz). We also analysed the archival observations from β Gem at 150 MHz from GMRT. We did not detect any radio signals from these systems. At 400 MHz, the 3σ upper limit is 87 μ Jy beam−1 for α Tau b and 77.4 μ Jy beam−1 for β UMi b. From our observations at 650 MHz, we place a 3σ upper limit of 28.2 μ Jy beam−1 for α Tau b and 33.6 μ Jy beam−1 for β UMi b. For β Gem b, at 150 MHz, we place an upper limit of 2.5 mJy. At 400 and 650 MHz, our observations are the deepest radio images for any exoplanetary system. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00358711
- Volume :
- 529
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Publication Type :
- Academic Journal
- Accession number :
- 176103745
- Full Text :
- https://doi.org/10.1093/mnras/stae536