11 citations · 38 across the 11 of their papers we have counts for
11 papers
GMRT Survey of Radio Emission from Magnetic Massive Stars -- I: Emission from Single Stars at sub-GHz Frequencies
Ayan Biswas, Gregg A. Wade, Barnali Das +2
With the growing subset of magnetic massive stars, it is now possible to conduct a systematic survey of radio emission from magnetic hot stars to better understand the underlying e…
Discovery of a rapidly evolving global magnetic field in the M-dwarf YZ Cet and constraints on the magnetic field of its planet YZ Cet b
Ayan Biswas, Colin P. Folsom, James A. Barron +3
We present a spectropolarimetric study of the nearby M4.5V exoplanet host star YZ Cet, based on near-infrared observations obtained with the SpectroPolarimètre InfraRouge (SPIRou)…
A Non-Stop Aurora? The Intriguing Radio Emission from the Rapidly Rotating Magnetic Massive Star HR 5907
Ayan Biswas, Barnali Das, James A. Barron +2
HR 5907 (HD 142184) stands out among magnetic OB stars for its rapid rotation, exceptionally hard X-ray emission, and strong magnetic field. High-frequency (>5 GHz) radio emission…
XMM-Newton Perspective of the Unique Magnetic Binary- Lupi
Ayan Biswas, Gregg A. Wade, Poonam Chandra +3
The Lupi A (HD 136504) system stands out among magnetic massive binaries as the only short-period binary system in which both components have detectable magnetic fields. The pr…
Characterizing the Spectral Structure of Weak Impulsive Narrowband Quiet Sun Emissions
Surajit Mondal, Divya Oberoi, Ayan Biswas +1
Weak Impulsive Narrowband Quiet Sun Emissions (WINQSEs) are a newly discovered class of radio emission from the solar corona. These emissions are characterized by their extremely i…
An unsupervised machine learning based algorithm for detecting Weak Impulsive Narrowband Quiet Sun Emissions and characterizing their morphology
Shabbir Bawaji, Ujjaini Alam, Surajit Mondal +2
The solar corona is extremely dynamic. Every leap in observational capabilities has been accompanied by unexpected revelations of complex dynamic processes. The ever more sensitive…
Discovery of Magnetospheric Interactions in the Doubly-Magnetic Hot Binary Lupi
Ayan Biswas, Barnali Das, Poonam Chandra +6
Magnetic fields are extremely rare in close, hot binaries, with only 1.5\% of such systems known to contain a magnetic star. The eccentric Lupi system stands out in this popula…
Star-Planet Interaction at radio wavelengths in YZ Ceti: Inferring planetary magnetic field
Corrado Trigilio, Ayan Biswas, Paolo Leto +13
In exoplanetary systems, the interaction between the central star and the planet can trigger Auroral Radio Emission (ARE), due to the Electron Cyclotron Maser mechanism. The high b…
Discovery of extraordinary X-ray emission from magnetospheric interaction in the unique binary stellar system Lupi
B. Das, V. Petit, Y. Nazé +12
We report detailed X-ray observations of the unique binary system Lupi, the only known short-period binary consisting of two magnetic early-type stars. The components have comp…
Study of radio transients from the quiet Sun during an extremely quiet time
Surajit Mondal, Divya Oberoi, Ayan Biswas
In this work we study a class of recently discovered metrewave solar transients referred to as Weak Impulsive Narrowband Quiet Sun Emission \citep[WINQSEs,][]{mondal2020}. Their st…
Robust absolute solar flux density calibration for the Murchison Widefield Array
Devojyoti Kansabanik, Surajit Mondal, Divya Oberoi +2
Sensitive radio instruments are optimized for observing faint astronomical sources, and usually need to attenuate the received signal when observing the Sun. There are only a handf…