284 citations · 1.6k across the 29 of their papers we have counts for
29 papers
Strong resemblance between surface and deep zonal winds inside Jupiter revealed by high-degree gravity moments
Hao Cao, Jeremy Bloxham, Ryan S. Park +5
Jupiter's atmosphere-interior is a coupled fluid dynamical system strongly influenced by the rapid background rotation. While the visible atmosphere features east-west zonal winds…
A Global Simulation of the Dynamo, Zonal Jets, and Vortices on Saturn
Rakesh Kumar Yadav, Hao Cao, Jeremy Bloxham
The fluid dynamics in planet Saturn gives rise to alternating east-west jet streams, large cyclonic and anticyclonic vortices, and a dipole-dominant magnetic field which is highly…
Coronal and chromospheric emission in A-type stars
Hans Moritz Günther, Carl Melis, J. Robrade +3
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-ra…
A dynamo simulation generating Saturn-like small magnetic dipole tilts
Rakesh K. Yadav, Hao Cao, Jeremy Bloxham
Among planetary dynamos, the magnetic field of Saturn stands out in its exceptional level of axisymmetry. One of its peculiar features is that the magnetic dipole mode is tilted wi…
Investigating Barotropic Zonal Flow in Jupiter's Deep Atmosphere using Juno Gravitational Data
Laura Kulowski, Hao Cao, Rakesh K. Yadav +1
The high-precision Juno gravitational measurements allow us to infer the structure of Jupiter's deep atmospheric zonal flow. Since this inference is nonunique, it is important to e…
Deep convection-driven vortex formation on Jupiter and Saturn
Rakesh Kumar Yadav, Moritz Heimpel, Jeremy Bloxham
The surface of both Jupiter and Saturn has magnificent vortical storms which help shape the dynamic nature of their atmospheres. Land- and space-based observational campaigns over…
An Earth-like stellar wind environment for Proxima Centauri c
Julián D. Alvarado-Gómez, Jeremy J. Drake, Cecilia Garraffo +4
A new planet has been recently discovered around Proxima Centauri. With an orbital separation of au and a minimum mass of about , Proxima c is a prime…
Deep rotating convection generates the polar hexagon on Saturn
Rakesh Kumar Yadav, Jeremy Bloxham
Numerous land and space-based observations have established that Saturn has a persistent hexagonal flow pattern near its north pole. While observations abound, the physics behind i…
Tuning the Exo-Space Weather Radio for Stellar Coronal Mass Ejections
Julián D. Alvarado-Gómez, Jeremy J. Drake, Federico Fraschetti +7
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 appearanc…
(Simulating) Coronal Mass Ejections in Active Stars
Julián D. Alvarado-Gómez, Jeremy J. Drake, Cecilia Garraffo +4
The stellar magnetic field completely dominates the environment around late-type stars. It is responsible for driving the coronal high-energy radiation (e.g. EUV/X-rays), the devel…
Coronal response to magnetically-suppressed CME events in M-dwarf stars
Julián D. Alvarado-Gómez, Jeremy J. Drake, Sofia P. Moschou +4
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 act…
Magnetism in the Brown Dwarf Regime
Melodie M. Kao, J. Sebastian Pineda, Peter Williams +8
A suite of discoveries in the last two decades demonstrate that we are now at a point where incorporating magnetic behavior is key for advancing our ability to characterize substel…
Astro2020 Science White Paper: Fundamental Physics with Brown Dwarfs: The Mass-Radius Relation
Adam Burgasser, Isabelle Baraffe, Matthew Browning +17
The lowest-mass stars, brown dwarfs and giant exoplanets span a minimum in the mass-radius relationship that probes the fundamental physics of extreme states of matter, magnetism,…
The stellar rotation--activity relationship in fully convective M dwarfs
Nicholas J. Wright, Elisabeth R. Newton, Peter K. G. Williams +2
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…
Estimating the magnetic field strength in hot Jupiters
Rakesh K. Yadav, Daniel P. Thorngren
A large fraction of known Jupiter like exoplanets are inflated as compared to Jupiter. These "hot" Jupiters orbit close to their parent star and are bombarded with intense starligh…
Magnetic cycles in a dynamo simulation of fully convective M-star Proxima Centauri
Rakesh K. Yadav, Ulrich R. Christensen, Scott J. Wolk +1
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…
Giant coronal loops dominate the quiescent X-ray emission in rapidly rotating M stars
O. Cohen, R. Yadav, C. Garraffo +5
Observations indicate that magnetic fields in rapidly rotating stars are very strong, on both small and large scales. What is the nature of the resulting corona? Here we seek to sh…
Approaching a realistic force balance in geodynamo simulations
Rakesh K. Yadav, Thomas Gastine, Ulrich R. Christensen +2
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 propert…
Explaining the coexistence of large-scale and small-scale magnetic fields in fully convective stars
Rakesh K. Yadav, Ulrich R. Christensen, Julien Morin +4
Despite the lack of a shear-rich tachocline region low-mass fully convective stars are capable of generating strong magnetic fields, indicating that a dynamo mechanism fundamentall…
Effect of shear and magnetic field on the heat-transfer efficiency of convection in rotating spherical shells
Rakesh K. Yadav, Thomas Gastine, Ulrich R. Christensen +2
We study rotating thermal convection in spherical shells. We base our analysis on a set of about 450 direct numerical simulations of the (magneto)hydrodynamic equations under the B…
Formation of starspots in self-consistent global dynamo models: Polar spots on cool stars
Rakesh K. Yadav, Thomas Gastine, Ulrich R. Christensen +1
Observations of cool stars reveal dark spot-like features on their surfaces. Compared to sunspots, starspots can be bigger or cover a larger fraction of the stellar surface. While…
From solar-like to anti-solar differential rotation in cool stars
T. Gastine, R. K. Yadav, J. Morin +2
Stellar differential rotation can be separated into two main regimes: solar-like when the equator rotates faster than the poles and anti-solar when the polar regions rotate faster…
Bridging planets and stars using scaling laws in anelastic spherical shell dynamos
Rakesh K. Yadav, Thomas Gastine, Ulrich R. Christensen +1
Dynamos operating in the interiors of rapidly rotating planets and low-mass stars might belong to a similar category where rotation plays a vital role. We quantify this similarity…
Consistent scaling laws in anelastic spherical shell dynamos
Rakesh K. Yadav, Thomas Gastine, Ulrich R. Christensen +1
Numerical dynamo models always employ parameter values that differ by orders of magnitude from the values expected in natural objects. However, such models have been successful in…