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Spectroscopic EUV observations of impulsive solar energetic particle event sources

Autor: Bucik, R., Fludra, A., Gomez-Herrero, R., Innes, D. E., Kellett, B., Kumar, R., Mackovjak, S.

Publikováno v: A&A 617, A40 (2018)

Context. The remote observations of solar flare ion acceleration are rather limited. There are theoretical predictions for signatures of ion acceleration in EUV line profiles. Previous tests involve observations of flares with no evidence for energet

Externí odkaz: http://arxiv.org/abs/1807.00861

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Formation of Lunar Swirls

Autor: Bamford, R. A., Alves, E. P., Cruz, F., Kellett, B. J., Fonseca, R. A., Silva, L. O, Trines, R. M. G. M., Halekas, J. S., Kramer, G., Harnett, E., Cairns, R. A., Bingham, R.

In this paper we show a plausible mechanism that could lead to the formation of the Dark Lanes in Lunar Swirls, and the electromagnetic shielding of the lunar surface that results in the preservation of the white colour of the lunar regolith. We pres

Externí odkaz: http://arxiv.org/abs/1505.06304

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A Multi-wavelength study of the M dwarf binary YY Geminorum

Autor: Butler, C. J., Erkan, N., Budding, E., Doyle, J. G., Foing, B., Bromage, G. E., Kellett, B. J., Frueh, M., Huovelin, J., Brown, A., Neff, J. E.

We review the results of the 1988 multi-wavelength campaign on the late-type eclipsing binary YY Geminorum. Observations include: broad-band optical and near infra-red photometry, simultaneous optical and ultraviolet (IUE) spectroscopy, X-ray (Ginga)

Externí odkaz: http://arxiv.org/abs/1501.03930

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Mapping lunar surface chemistry: new prospects with the Chandrayaan-2 Large Area Soft x-ray Spectrometer (CLASS)

Autor: Narendranath, S., Athiray, P. S., Sreekumar, P., Radhakrishnaa, V., Tyagi, A., Kellett, B. J., team, the CLASS

Surface chemistry of airless bodies in the solar system can be derived from remote x-ray spectral measurements from an orbiting spacecraft. X- rays from planetary surfaces are excited primarily by solar x-rays. Several experiments in the past have us

Externí odkaz: http://arxiv.org/abs/1305.6218

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Mini-magnetospheres above the lunar surface and the formation of lunar swirls

Autor: Bamford, R. A., Kellett, B., Bradford, W. J., Norberg, C., Thornton, A., Gibson, K. J., Crawford, I. A., Silva, L., Gargate, L., Bingham, R.

In this paper we present in-situ satellite data, theory and laboratory validation that show how small scale collisionless shocks and mini-magnetospheres can form on the electron inertial scale length. The resulting retardation and deflection of the s

Externí odkaz: http://arxiv.org/abs/1207.2076

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The Diagnostic Potential of Transition Region Lines under-going Transient Ionization in Dynamic Events

Autor: Doyle, J. G., Giunta, A., Singh, A., Madjarska, M. S., Summers, H., Kellett, B. J., O'Mullane, M.

We discuss the diagnostic potential of high cadence ultraviolet spectral data when transient ionization is considered. For this we use high cadence UV spectra taken during the impulsive phase of a solar flares (observed with instruments on-board the

Externí odkaz: http://arxiv.org/abs/1204.6598

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