|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
University of Cambridge > Talks.cam > Informal Lunch Seminars in AFD > Creating a coronal hard X-ray source? Exploring the effect of binary collisions on electron acceleration in magnetic reconnection regions
Creating a coronal hard X-ray source? Exploring the effect of binary collisions on electron acceleration in magnetic reconnection regions
If you have a question about this talk, please contact Dr. Jaroslav Dudik.
An unexpectedly bright, coronal hard X-ray (HXR) source was first discovered using the HXT instrument on Yohkoh (Masuda et al. 1994) and several more examples have been found in RHESSI data. These sources have attracted great interest particularly because they may represent the location of the electron acceleration region. We know that electrons must undergo collisions in order to emit bremsstrahlung HXRs. Therefore self-consistent models for coronal HXR sources must include collisional energy loss and scattering alongside the accelerating agent.
In this talk I will describe work aimed at including the effects of binary collisions in reconnection test particle calculations. We used a numerical method to follow test particle trajectories, based on Honeycutt’s (1992) extension of the RK4 method to stochastic differential equations. This method led to the production of HXR -energy electrons, giving a viable (if highly idealised) model for coronal HXR production.
This talk is part of the Informal Lunch Seminars in AFD series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsTanner Lectures Entrepreneurship for a Zero Carbon Society Film screening - Salaam Bombay!
Other talksImmigrant Access in the Affordable Care Act: Legacies of the Confederacy Grand Rounds - Title to be confirmed A sting in the tail: evolutionary consequences of chemical anti-predator defence in animals Micro-Finance Innovation for Financial Inclusion in Developing Economies Mechanisms of lymphomagenesis: Developmental origins of a paediatric cancer Measuring Ethnicity in the NHS