110 citations · 359 across the 14 of their papers we have counts for
14 papers
Using in-situ solar-wind observations to generate inner-boundary conditions to outer-heliosphere simulations, 1: Dynamic time warping applied to synthetic observations
Mathew Owens, Jonathan Nichols
The structure and dynamics of the magnetospheres of the outer planets, particularly Saturn and Jupiter, have been explored both through remote and in-situ observations. Interpretin…
Searching for Saturn's X-rays during a rare Jupiter Magnetotail Crossing using Chandra
D. M. Weigt, W. R. Dunn, C. M. Jackman +6
Every 19 years, Saturn passes through Jupiter's 'flapping' magnetotail. Here, we report Chandra X-ray observations of Saturn planned to coincide with this rare planetary alignment…
The search for radio emission from the exoplanetary systems 55 Cancri, Andromedae, and Boötis using LOFAR beam-formed observations
Jake D. Turner, Philippe Zarka, Jean-Mathias Grießmeier +8
Observing planetary auroral radio emission is the most promising method to detect exoplanetary magnetic fields, the knowledge of which will provide valuable insights into the plane…
Magnetohydrodynamic modelling of star-planet interaction and associated auroral radio emission
Sam Turnpenney, Jonathan D. Nichols, Graham A. Wynn +1
We present calculations of auroral radio powers of magnetised hot Jupiters orbiting Sun-like stars, computed using global magnetohydrodynamic (MHD) modelling of the magnetospheric…
Closing gaps to our origins. The UV window into the Universe
Ana I. Gomez de Castro, Martin A. Barstow, Fréderic Baudin +23
The investigation of the emergence of life is a major endeavour of science. Astronomy is contributing to it in three fundamental manners: (1) by measuring the chemical enrichment o…
A Swift view of X-ray and UV radiation in the planet-forming T-Tauri system PDS 70
Simon Joyce, John Pye, Jonathan Nichols +4
PDS 70 is a 5 Myr old star with a gas and dust disc in which several proto-planets have been discovered. We present the first UV detection of the system along with X-ray obse…
Exoplanet host-star properties: the active environment of exoplanets
John P. Pye, David Barrado, Rafael A. Garcia +12
The primary objectives of the ExoplANETS-A project are to: establish new knowledge on exoplanet atmospheres; establish new insight on influence of the host star on the planet atmos…
Exoplanet-induced radio emission from M-dwarfs
S. Turnpenney, J. D. Nichols, G. A. Wynn +1
We consider the magnetic interaction of exoplanets orbiting M-dwarfs, calculating the expected Poynting flux carried upstream along Alfvén wings to the central star. A region of em…
Auroral Radio Emission from Ultracool Dwarfs: a Jovian Model
Sam Turnpenney, Jonathan Nichols, Graham Wynn +1
A number of fast-rotating ultra cool dwarfs (UCDs) emit pulsed coherent radiation, attributed to the electron cyclotron maser instability, a phenomenon that occurs in the solar sys…
Magnetospheres of hot Jupiters: hydrodynamic models & ultraviolet absorption
R. D. Alexander, G. A. Wynn, H. Mohammed +2
We present hydrodynamic simulations of stellar wind-magnetosphere interactions in hot Jupiters such as WASP-12b. For fiducial stellar wind rates we find that a planetary magnetic f…
Observing Jupiter's polar stratospheric haze with HST/STIS. An HST White Paper
Denis Grodent, Bertrand Bonfond, Jonathan Nichols
The purpose of this HST white paper is to demonstrate that it is possible to monitor Jupiter's polar haze with HST/STIS without breaking the ground screening limit for bright objec…
The crucial role of HST during the NASA Juno mission: a "Juno initiative"
Denis Grodent, Bertrand Bonfond, Jean-Claude Gérard +5
In 2016, the NASA Juno spacecraft will initiate its one-year mission around Jupiter and become the first probe to explore the polar regions of Jupiter. The HST UV instruments (STIS…
Building galaxies, stars, planets and the ingredients for life between the stars. A scientific proposal for a European Ultraviolet-Visible Observatory (EUVO)
Ana I. Gómez de Castro, Thierry Appourchaux, Martin Barstow +36
The growth of luminous structures and the building blocks of life in the Universe began as primordial gas was processed in stars and mixed at galactic scales. The mechanisms respon…
Origin of electron cyclotron maser-induced radio emissions at ultra-cool dwarfs: magnetosphere-ionosphere coupling currents
J. D. Nichols, M. R. Burleigh, S. L. Casewell +4
A number of ultra-cool dwarfs emit circularly polarised radio waves generated by the electron cyclotron maser instability. In the solar system such radio is emitted from regions of…