A5092829397- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Characterization and Applications of Magnetic Nanoparticles
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Solar and Space Plasma Dynamics
- Pulsars and Gravitational Waves Research
- Astronomy and Astrophysical Research
- Astro and Planetary Science
Indian Institute of Technology Bombay
2024-2025
Abstract The time-variable emission from the accretion flow of Sgr A*, supermassive black hole at Galactic center, has long been examined in radio-to-millimeter, near-infrared (NIR), and X-ray regimes electromagnetic spectrum. However, until now, sensitivity angular resolution have insufficient crucial mid-infrared (MIR) regime. MIRI instrument on JWST changed that, we report first MIR detection A*. was during a flare that lasted about 40 minutes, duration similar to NIR flares, source's...
Abstract Bok globules are small, dense clouds that act as isolated precursors for the formation of single or binary stars. Although recent dust polarization surveys, primarily with Planck, have shown molecular strongly magnetized, significance magnetic fields in has largely been limited to individual case studies, lacking a broader statistical understanding. In this work, we introduce comprehensive optical polarimetric survey 21 globules. Using Gaia and near-IR photometric data, produce...
During the first half of fourth observing run (O4a) International Gravitational Wave Network (IGWN), Zwicky Transient Facility (ZTF) conducted a systematic search for kilonova (KN) counterparts to binary neutron star (BNS) and star-black hole (NSBH) merger candidates. Here, we present comprehensive study five high-significance (FAR < 1 per year) BNS NSBH candidates in O4a. Our follow-up campaigns relied on both target-of-opportunity observations (ToO) re-weighting nominal survey schedule...
Abstract Many known FU Orionis stars are projected on the sky at peripheries of star-forming regions. Physical association is assumed, but not yet firmly established. We investigate cases two such stars, Ori and V883 Ori, seeking kinematic evidence their membership in young clusters associated with Orion molecular clouds. Using astrometric data from Gaia DR3, we search for consistent 2D velocities, also use more limited radial velocity to assess 3D velocities. Considering +/ − 25 pc boxes...
Bok globules are small, dense clouds that act as isolated precursors for the formation of single or binary stars. Although recent dust polarization surveys, primarily with Planck, have shown molecular strongly magnetized, significance magnetic fields in has largely been limited to individual case studies, lacking a broader statistical understanding. In this work, we introduce comprehensive optical polarimetric survey 21 globules. Using Gaia and near-IR photometric data, produce extinction...
We use kinematic data of proper motions from Gaia forty-two globular and open clusters Large Magellanic Cloud (LMC) to explore the possibility them having extragalactic origins. find difference between cluster stars a surrounding patch young LMC in each case. five towards north-east showing high (> 0.11 mas/yr, or > 25 km/s). also examine statistical significance this taking into account both measurement errors as well inherent dispersion stellar local galactic environment. The (NGC 2005,...