A uGMRT search for radio emission from planets around evolved stars
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| Natura: | Preprint |
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2024
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| author | Narang, Mayank Manoj, P. Chandra, Ishwara Banerjee, Bihan Tyagi, Himanshu Tamura, Motohide Henning, Thomas Mathew, Blesson Lazio, Joseph Surya, Arun Nayak, Prasanta K. |
| author_facet | Narang, Mayank Manoj, P. Chandra, Ishwara Banerjee, Bihan Tyagi, Himanshu Tamura, Motohide Henning, Thomas Mathew, Blesson Lazio, Joseph Surya, Arun Nayak, Prasanta K. |
| contents | 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 $\sim$ 6 $M_J$ mass planets at about $\sim$1.4 au from the central star, while $β$~Gem is host to a 2.9 $M_J$ mass planet at 1.7 au from the host star. We observe $α$~Tau and $β$~ UMi at two u(upgraded)GMRT bands; band~3 (250-500~MHz) and band~4 (550-900~MHz). We also analyzed 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 3$σ$ upper limit is 87 $μ$Jy/beam for $α$~Tau~{b} and 77.4 $μ$Jy/beam for $β$~UMi~{b}. From our observations at 650~MHz, we place a 3$σ$ upper limit of 28.2 $μ$Jy/beam for $α$~Tau~b and 33.6 $μ$Jy/beam for $β$~UMi~b. For $β$ Gem b, at 150~MHz, we place an upper limit of 2.5 mJy. At 400~MHz and 650~MHz, our observations are the deepest radio images for any exoplanetary system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_11182 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A uGMRT search for radio emission from planets around evolved stars Narang, Mayank Manoj, P. Chandra, Ishwara Banerjee, Bihan Tyagi, Himanshu Tamura, Motohide Henning, Thomas Mathew, Blesson Lazio, Joseph Surya, Arun Nayak, Prasanta K. Earth and Planetary Astrophysics Solar and Stellar Astrophysics 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 $\sim$ 6 $M_J$ mass planets at about $\sim$1.4 au from the central star, while $β$~Gem is host to a 2.9 $M_J$ mass planet at 1.7 au from the host star. We observe $α$~Tau and $β$~ UMi at two u(upgraded)GMRT bands; band~3 (250-500~MHz) and band~4 (550-900~MHz). We also analyzed 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 3$σ$ upper limit is 87 $μ$Jy/beam for $α$~Tau~{b} and 77.4 $μ$Jy/beam for $β$~UMi~{b}. From our observations at 650~MHz, we place a 3$σ$ upper limit of 28.2 $μ$Jy/beam for $α$~Tau~b and 33.6 $μ$Jy/beam for $β$~UMi~b. For $β$ Gem b, at 150~MHz, we place an upper limit of 2.5 mJy. At 400~MHz and 650~MHz, our observations are the deepest radio images for any exoplanetary system. |
| title | A uGMRT search for radio emission from planets around evolved stars |
| topic | Earth and Planetary Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2402.11182 |