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Browsing by Author "Yadav, Rakesh K."

Browsing by Author "Yadav, Rakesh K."

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  • Approaching a realistic force balance in geodynamo simulations 
    Yadav, Rakesh K.; Gastine, Thomas; Christensen, Ulrich R.; Wolk, Scott J.; Poppenhaeger, Katja (2016)
    Earth sustains its magnetic field by a dynamo process driven by convection in the liquid outer core. Geodynamo simulations have been successful in reproducing many observed properties of the geomagnetic field. However, ...
  • Coronal and Chromospheric Emission in A-type Stars 
    Günther, Hans Moritz; Melis, Carl; Robrade, J.; Schneider, P. C.; Wolk, Scott J.; Yadav, Rakesh K. (2022)
    Cool stars on the main sequence generate X-rays from coronal activity, powered by a convective dynamo. With increasing temperature, the convective envelope becomes smaller and X-ray emission fainter. We present Chandra/HRC-I ...
  • Coronal Response to Magnetically Suppressed CME Events in M-dwarf Stars 
    Alvarado-Gómez, Julián D.; Drake, Jeremy J.; Moschou, Sofia P.; Garraffo, Cecilia; Cohen, Ofer; NASA LWS Focus Science Team: Solar-Stellar Connection; Yadav, Rakesh K.; Fraschetti, Federico (2019)
    We report the results of the first state-of-the-art numerical simulations of coronal mass ejections (CMEs) taking place in realistic magnetic field configurations of moderately active M-dwarf stars. Our analysis indicates ...
  • Explaining the Coexistence of Large-scale and Small-scale Magnetic Fields in Fully Convective Stars 
    Yadav, Rakesh K.; Christensen, Ulrich R.; Morin, Julien; Gastine, Thomas; Reiners, Ansgar; Poppenhaeger, Katja; Wolk, Scott J. (2015)
    Despite the lack of a shear-rich tachocline region, low-mass fully convective (FC) stars are capable of generating strong magnetic fields, indicating that a dynamo mechanism fundamentally different from the solar dynamo ...
  • Magnetic Cycles in a Dynamo Simulation of Fully Convective M-star Proxima Centauri 
    Yadav, Rakesh K.; Christensen, Ulrich R.; Wolk, Scott J.; Poppenhaeger, Katja (2016)
    The recent discovery of an Earth-like exoplanet around Proxima Centauri has shined a spot light on slowly rotating fully convective M-stars. When such stars rotate rapidly (period ?20 days), they are known to generate very ...
  • The stellar rotation-activity relationship in fully convective M dwarfs 
    Wright, Nicholas J.; Newton, Elisabeth R.; Williams, Peter K. G.; Drake, Jeremy J.; Yadav, Rakesh K. (2018)
    The coronal activity-rotation relationship is considered to be a proxy for the underlying stellar dynamo responsible for magnetic activity in solar and late-type stars. While this has been studied in considerable detail ...
  • Tuning the Exospace Weather Radio for Stellar Coronal Mass Ejections 
    Alvarado-Gómez, Julián D.; Drake, Jeremy J.; Fraschetti, Federico; Garraffo, Cecilia; Cohen, Ofer; Vocks, Christian; Poppenhäger, Katja; Moschou, Sofia P.; Yadav, Rakesh K.; Manchester, Ward B.,IV (2020)
    Coronal mass ejections (CMEs) on stars other than the Sun have proven very difficult to detect. One promising pathway lies in the detection of type II radio bursts. Their appearance and distinctive properties are associated ...

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