Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Browning, Philippa"'
Twisted magnetic flux ropes are reservoirs of free magnetic energy. In a highly-conducting plasma such as the solar corona, energy release through multiple magnetic reconnections can be modelled as a helicity-conserving relaxation to a minimum energy
Externí odkaz:
http://arxiv.org/abs/2308.08277
Particle acceleration and their escape into the heliosphere in solar flares with open magnetic field
Autor:
Gordovskyy, Mykola, Browning, Philippa K., Kusano, Kanya, Inoue, Satoshi, Vekstein, Gregory E.
Energetic particle populations in the solar corona and in the heliosphere appear to have different characteristics even when produced in the same solar flare. It is not clear what causes this difference: properties of the acceleration region, the lar
Externí odkaz:
http://arxiv.org/abs/2305.19449
Publikováno v:
In Fundamental Plasma Physics June 2024 10
Autor:
Gordovskyy, Mykola, Browning, Philippa K., Inoue, Satoshi, Kontar, Eduard P., Kusano, Kanya, Vekstein, Grigory E.
The aim of this study is to generate maps of the hard X-ray emission produced by energetic electrons in a solar flare and compare them with observations. The ultimate goal is to test the viability of the combined MHD/test-particle approach for data-d
Externí odkaz:
http://arxiv.org/abs/2009.10130
Autor:
Kontar, Eduard P., Chen, Xingyao, Chrysaphi, Nicolina, Jeffrey, Natasha L. S., Emslie, A. Gordon, Krupar, Vratislav, Maksimovic, Milan, Gordovskyy, Mykola, Browning, Philippa K.
The observed properties (i.e., source size, source position, time duration, decay time) of solar radio emission produced through plasma processes near the local plasma frequency, and hence the interpretation of solar radio bursts, are strongly influe
Externí odkaz:
http://arxiv.org/abs/1909.00340
Publikováno v:
A&A 623, A15 (2019)
Forced magnetic reconnection, a reconnection event triggered by external perturbation, should be ubiquitous in the solar corona. Energy released during such cases can be much greater than that which was introduced by the perturbation. It is unclear h
Externí odkaz:
http://arxiv.org/abs/1901.02392
Autor:
O'Flannagain, Aidan M., Maloney, Shane A., Gallagher, Peter T., Browning, Philippa, Refojo, Jose
Publikováno v:
A&A 617, A9 (2018)
Magnetic reconnection is believed to be the primary mechanism by which non-potential energy stored in coronal magnetic fields is rapidly released during solar eruptive events. Unfortunately, owing to the small spatial scales on which reconnection is
Externí odkaz:
http://arxiv.org/abs/1806.09365
Publikováno v:
A&A 604, A116 (2017)
Magnetic reconnection and particle acceleration due to the kink instability in twisted coronal loops can be a viable scenario for confined solar flares. Detailed investigation of this phenomenon requires reliable methods for observational detection o
Externí odkaz:
http://arxiv.org/abs/1611.02237
Autor:
Gordovskyy, Mykola, Browning, Philippa
The goal of this study is to develop an approximate self-consistent description of particle motion in strongly magnetised solar corona. We derive a set of reduced drift-kinetic equations based on the assumption that the gyro-velocity distribution is
Externí odkaz:
http://arxiv.org/abs/1602.00341
Autor:
De Moortel, Ineke, Browning, Philippa
Publikováno v:
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 373, issue 2042, pp. 20140269-20140269
The solar corona, the tenuous outer atmosphere of the Sun, is orders of magnitude hotter than the solar surface. This 'coronal heating problem' requires the identification of a heat source to balance losses due to thermal conduction, radiation and (i
Externí odkaz:
http://arxiv.org/abs/1510.00977