3 papers
astro-ph.HE2019
New hard-TeV extreme blazars detected with the MAGIC telescopes
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +175
Extreme high-frequency peaked BL Lac objects (EHBLs) are blazars which exhibit extremely energetic synchrotron emission. They also feature non-thermal gamma-ray emission whose peak…
astro-ph2004
Phase diversity restoration of sunspot images I. Relations between penumbral and photospheric features
J. A. Bonet, I. Marquez, R. Muller +2
We investigate the dynamics of and the relations between small-scale penumbral and photospheric features near the outer penumbral boundary: penumbral grains (PGs), dark penumbral f…
astro-ph2003
Dynamo action in turbulent flows
Vasilis Archontis, Bertil Dorch, Aake Nordlund
We present results from numerical simulations of nonlinear MHD dynamo action produced by three-dimensional flows that become turbulent for high values of the fluid Reynolds number.…