Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Osborne, Christopher M."'
Non-LTE radiative transfer is a key tool for modern astrophysics: it is the means by which many key synthetic observables are produced, thus connecting simulations and observations. Radiative transfer models also inform our understanding of the prima
Externí odkaz:
http://arxiv.org/abs/2408.14425
Autor:
Hudson, Hugh S., Cliver, Edward. W., Fletcher, Lyndsay, Diver, Declan A., Gallagher, Peter T., Li, Ying, Osborne, Christopher M. J., Stark, Craig, Su, Yang
The geomagnetic "solar flare effect" (SFE) results from excess ionization in the Earth's ionosphere, famously first detected at the time of the Carrington flare in 1859. This indirect detection of a flare constituted one of the first cases of "multim
Externí odkaz:
http://arxiv.org/abs/2407.09233
We explored the impact that Doppler dimming and brightening effects from bulk motions of solar prominences have on the formation of Lya, Ha, and MgII h line profiles. We compared two schemes in which these effects manifest; when the prominence is mov
Externí odkaz:
http://arxiv.org/abs/2406.12551
Solar prominences observed close to the limb commonly include a bright feature that, from the perspective of the observer, runs along the interface between itself and the underlying chromosphere. Despite several idealised models being proposed to exp
Externí odkaz:
http://arxiv.org/abs/2403.09931
Numerical models of solar flares typically focus on the behaviour of directly-heated flare models, adopting magnetic field- aligned, plane-parallel methodologies. With high spatial- and spectral-resolution ground-based optical observations of flares,
Externí odkaz:
http://arxiv.org/abs/2209.03238
The forward fitting of solar flare observations with radiation-hydrodynamic simulations is a common technique for learning about energy deposition and atmospheric evolution during these explosive events. A frequent spectral line choice for this proce
Externí odkaz:
http://arxiv.org/abs/2107.11145
Autor:
Osborne, Christopher M J, Milić, Ivan
Tools for computing detailed optically thick spectral line profiles out of local thermodynamic equilibrium have always been focused on speed, due to the large computational effort involved. With the Lightweaver framework, we have produced a more flex
Externí odkaz:
http://arxiv.org/abs/2107.00475
Gyrosynchrotron radiation is produced by solar flares, and can be used to infer properties of the accelerated electrons and magnetic field of the flaring region. This microwave emission is highly dependent on many local plasma parameters, and the vie
Externí odkaz:
http://arxiv.org/abs/1903.04219
Publikováno v:
ApJ 2019 873:128
During a solar flare, it is believed that reconnection takes place in the corona followed by fast energy transport to the chromosphere. The resulting intense heating strongly disturbs the chromospheric structure, and induces complex radiation hydrody
Externí odkaz:
http://arxiv.org/abs/1901.08626
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters; Sep2024, Vol. 533 Issue 1, pL19-L24, 6p
