BINA

Abstract

The search for magnetic fields from exoplanetary systems is a subject that has caught the attention of the community for almost two decades. Only with the advancements in observational facilities during the past two decades, these detections have become possible. Along with Dr. Apurva Oza, Dr. Mayank Narang, Prof. Manoj Puravankara and Dr. Kaustubh Hakim, the collaboration is searching for an electron cyclotron maser instability (ECMI) emission from exoplanetary systems, essentially a Jupiter-Io-like decametric (DAM) radio emission from star-planet and planet-moon interactions. Within the collaboration, our unsuccessful attempts at detecting radio emission from exoplanet-exomoon interactions with uGMRT have set unprecedented upper limits on the exoplanet magnetic field strength with some of the deepest radio images of the field [ Pub-01,Pub-02]. The collaboration is further investigating instrumental facilities that can access even lower frequencies to detect weaker magnetic fields.

Collaborators

Name	Affiliation & Contact
Dr. Kaustubh Hakim	Royal Observatory of Belgium (Brussels, Belgium) Kaustubh in Brussels Katholieke Universiteit Leuven (Leuven, Belgium) Kaustubh at kuleuven
Dr. Mayank Narang	Tata Institute of Fundamental Research (TIFR)(Mumbai,India) Narang
Prof. Manoj Puravankara	Tata Institute of Fundamental Research (TIFR)(Mumbai, India)i Prof Puravankara
Dr. Apurva V. Oza	California Institute of Technology, Division of Geological and Planetary Sciences (Pasadena, USA) Dr Oza

Publications

Narang, M., Oza, A.V., Hakim, K., et al. 2023a, AJ, 165, 1. ,
Radio-loud Exoplanet-exomoon Survey: GMRT Search for Electron Cyclotron Maser Emission

Narang, M., Oza, A.V., Hakim, K., et al. 2023b, MNRAS, 522, 1662 ,
uGMRT observations of the hot-Saturn WASP-69b: Radio-Loud Exoplanet–Exomoon Survey II (RLEES II)

Proposals

• Apurva V. Oza, Kaustubh Hakim, Mayank Narang, Manoj Puravankara, Ravinder Kumar Banyal
  "Novel Method to Detect Active Exomoons : Moon-Induced Cyclotron Emission"
  Telescope: Giant Metrewave Radio Telescope (GMRT) ; Observing Cycle: Cycle no. 39 ; Time Requested: 36h ; Time Allocated: 12h
• Kaustubh Hakim, Apurva V. Oza, Mayank Narang, Himanshu Tyagi, Manoj Puravankara
  "Radio-Loud Exoplanet-Exomoon Survey (RLEES): A Search for Tidally-Enhanced ECMI"
  Telescope: Giant Metrewave Radio Telescope (GMRT) ; Observing Cycle: Cycle no. 41 ; Time Requested: 112h ; Time Allocated: 32h