A uGMRT search for radio emission from planets around evolved stars
- Title
- A uGMRT search for radio emission from planets around evolved stars
- Creator
- Narang M.; Puravankara M.; Ishwara Chandra C.H.; Banerjee B.; Tyagi H.; Tamura M.; Henning T.; Mathew B.; Lazio J.; Surya A.; Nayak P.K.
- Description
- 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 ? Tau, ? UMi, and ? Gem. Both ? Tau and ? UMi host massive ? 6 MJ mass planets at about ?1.4 au from the central star, while ? Gem is host to a 2.9 MJ mass planet at 1.7 au from the host star. We observe ? Tau and ? UMi at two upgraded GMRT bands: band 3 (250500 MHz) and band 4 (550900 MHz). We also analysed the archival observations from ? Gem at 150 MHz from GMRT. We did not detect any radio signals from these systems. At 400 MHz, the 3? upper limit is 87 ?Jy beam?1 for ? Tau b and 77.4 ?Jy beam?1 for ? UMi b. From our observations at 650 MHz, we place a 3? upper limit of 28.2 ?Jy beam?1 for ? Tau b and 33.6 ?Jy beam?1 for ? UMi b. For ? 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. The Author(s) 2024.
- Source
- Monthly Notices of the Royal Astronomical Society, Vol-529, No. 2, pp. 1161-1168.
- Date
- 2024-01-01
- Publisher
- Oxford University Press
- Subject
- exoplanets; planets and satellites: aurorae; planets and satellites: detection; planets and satellites: gaseous planets; radio continuum: planetary systems; radio continuum: stars
- Coverage
- Narang M., Academia Sinica Institute of Astronomy and Astrophysics, 11F of Astro-Math Bldg, No.1, Section 4, Roosevelt Rd, Taipei, 10617, Taiwan, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Puravankara M., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Ishwara Chandra C.H., National Centre for Radio Astrophysics, TIFR, Post Bag 3, Ganeshkhind, Pune, 411007, India; Banerjee B., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Tyagi H., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Tamura M., University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan, Astrobiology Center, 2-21-1, Osawa, Mitaka, Tokyo, 181-8588, Japan, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan; Henning T., Max-Planck-Institut f Astronomie, Kigstuhl 17, Heidelberg, D-69117, Germany; Mathew B., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bangalore, 560034, India; Lazio J., Jet Propulsion Laboratory, California Institute of Technology, Pasadena, 91106, CA, United States; Surya A., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Nayak P.K., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India, Institute of Astrophysics, Pontificia Universidad Catica de Chile, Av. Vicu MacKenna 4860, Santiago, 7820436, Chile
- Rights
- All Open Access; Gold Open Access; Green Open Access
- Relation
- ISSN: 358711; CODEN: MNRAA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Narang M.; Puravankara M.; Ishwara Chandra C.H.; Banerjee B.; Tyagi H.; Tamura M.; Henning T.; Mathew B.; Lazio J.; Surya A.; Nayak P.K., “A uGMRT search for radio emission from planets around evolved stars,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 26, 2025, https://archives.christuniversity.in/items/show/13189.