113 citations · 395 across the 14 of their papers we have counts for
14 papers
Deposition of steeply infalling debris around white dwarf stars
John C. Brown, Dimitri Veras, Boris T. Gaensicke
High-metallicity pollution is common in white dwarf (WD) stars hosting remnant planetary systems. However, they rarely have detectable debris accretion discs, possibly because much…
Destruction and Observational Signatures of Sun-Impacting Comets
John C. Brown, Robert W. Carlson, Mark P. Toner
Motivated by recent data on comets in the low corona, we discuss destruction of sun impacting comets in the dense lower solar atmosphere. Perihelion distances q less than the solar…
Solar Hard X-ray Source Sizes in a Beam-Heated and Ionised Chromosphere
A. O'Flannagain, J. C. Brown, P. T. Gallagher
Solar flare hard X-rays (HXRs) are produced as bremsstrahlung when an accelerated population of electrons interacts with the dense chromospheric plasma. HXR observations presented…
Stellar Polarimetry: Where Are We and Where Are We Going?
Jennifer L. Hoffman, John C. Brown, Kenneth Nordsieck +2
On the final day of the Stellar Polarimetry conference, participants split up into three "breakout sessions" to discuss the future of the field in the areas of instrumentation, upc…
Electrons re-acceleration at the footpoints of Solar Flares
Rim Turkmani, John Brown
Hinode's observations revealed a very dynamic and complex chromosphere. This require revisiting the assumption that the chromospheric footpoints of solar flares are areas where acc…
Electron-Electron Bremsstrahlung Emission and the Inference of Electron Flux Spectra in Solar Flares
Eduard P. Kontar, A. Gordon Emslie, Anna Maria Massone +3
Although both electron-ion and electron-electron bremsstrahlung contribute to the hard X-ray emission from solar flares, the latter is normally ignored. Such an omission is not jus…