In search of radio emission from exoplanets: GMRT observations of the binary system HD 41004
- Title
- In search of radio emission from exoplanets: GMRT observations of the binary system HD 41004
- Creator
- Narang M.; Manoj P.; Ishwara Chandra C.H.; Lazio J.; Henning T.; Tamura M.; Mathew B.; Ujwal N.; Mandal P.
- Description
- This paper reports Giant Metrewave Radio Telescope (GMRT) observations of the binary system HD 41004 that are among the deepest images ever obtained at 150 and 400 MHz in the search for radio emission from exoplanets. The HD 41004 binary system consists of a K1 V primary star and an M2 V secondary; both stars are host to a massive planet or brown dwarf. Analogous to planets in our Solar system that emit at radio wavelengths due to their strong magnetic fields, one or both of the planet or brown dwarf in the HD 41004 binary system are also thought to be sources of radio emission. Various models predict HD 41004Bb to have one of the largest expected flux densities at 150 MHz. The observations at 150 MHz cover almost the entire orbital period of HD 41004Bb, and about 20percent of the orbit is covered at 400 MHz. We do not detect radio emission, setting 3? limits of 1.8 mJy at 150 MHz and 0.12 mJy at 400 MHz. We also discuss some of the possible reasons why no radio emission was detected from the HD 41004 binary system. 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
- Source
- Monthly Notices of the Royal Astronomical Society, Vol-500, No. 4, pp. 4818-4826.
- Date
- 2021-01-01
- Publisher
- Oxford University Press
- Subject
- (stars:) planetary systems; radio continuum: planetary systems; stars: individual: HD 41004; techniques: interferometric
- Coverage
- Narang M., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Manoj P., 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; Lazio J., Jet Propulsion Laboratory, California Institute of Technology, Pasadena, 91106, CA, United States; Henning T., Max-Planck-Institut f Astronomie, Kigstuhl 17, Heidelberg, D-69117, Germany; Tamura M., The 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; Mathew B., Department of Physics and Electronics, CHRIST (Deemed to Be University), Bangalore, Karnataka, 560034, India; Ujwal N., Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India; Mandal P., Department of Physics and Electronics, CHRIST (Deemed to Be University), Bangalore, Karnataka, 560034, India
- Rights
- All Open Access; Green Open Access
- Relation
- ISSN: 358711; CODEN: MNRAA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Narang M.; Manoj P.; Ishwara Chandra C.H.; Lazio J.; Henning T.; Tamura M.; Mathew B.; Ujwal N.; Mandal P., “In search of radio emission from exoplanets: GMRT observations of the binary system HD 41004,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 26, 2025, https://archives.christuniversity.in/items/show/15866.