Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Mastrano, A."'
Autor:
Thalmann, J. K., Georgoulis, M. K., Liu, Y., Pariat, E., Valori, G., Anfinogentov, S., Chen, F., Guo, Y., Moraitis, K., Yang, S., Mastrano, A.
In this ISSI-supported series of studies on magnetic helicity in the Sun, we systematically implement different magnetic helicity calculation methods on high-quality solar magnetogram observations. We apply finite-volume, discrete flux tube (in parti
Externí odkaz:
http://arxiv.org/abs/2108.08525
We investigate the ability of a nonlinear force-free code to calculate highly-twisted magnetic field configurations using the Titov and D\'{e}moulin (1999) equilibrium field as a test case. The code calculates a force-free field using boundary condit
Externí odkaz:
http://arxiv.org/abs/2008.02985
We propose and discuss an alternative pulsar radio emission mechanism that relies on rotation-driven plasma oscillations, rather than on a beam-driven instability, and suggest that it may be the generic radio emission mechanism for pulsars. We identi
Externí odkaz:
http://arxiv.org/abs/2006.15487
We consider critically the three most widely favored pulsar radio emission mechanisms: coherent curvature emission (CCE), beam-driven relativistic plasma emission (RPE) and anomalous Doppler emission (ADE). We assume that the pulsar plasma is one dim
Externí odkaz:
http://arxiv.org/abs/2006.15243
Vector magnetogram data are often used as photospheric boundary conditions for force-free coronal magnetic field extrapolations. In general, however, vector magnetogram data are not consistent with the force-free assumption. In this article, we demon
Externí odkaz:
http://arxiv.org/abs/2004.12510
Beam-driven instabilities are considered in a pulsar plasma assuming that both the background plasma and the beam are relativistic J\"uttner distributions. In the rest frame of the background, the only waves that can satisfy the resonance condition a
Externí odkaz:
http://arxiv.org/abs/1906.01822
Weak heating events are frequent and ubiquitous in solar corona. They derive their energy from the local magnetic field and form a major source of local heating, signatures of which are seen in EUV and X-ray bands. Their radio emission arise from var
Externí odkaz:
http://arxiv.org/abs/1902.10426
Wave dispersion in a pulsar plasma is discussed emphasizing the relevance of different inertial frames, notably the plasma rest frame ${\cal K}$ and the pulsar frame ${\cal K}'$ in which the plasma is streaming with speed $\beta_{\rm s}$. The effect
Externí odkaz:
http://arxiv.org/abs/1812.07120
Wave dispersion in a pulsar plasma (a 1D, strongly magnetized, pair plasma streaming highly relativistically with a large spread in Lorentz factors in its rest frame) is discussed, motivated by interest in beam-driven wave turbulence and the pulsar r
Externí odkaz:
http://arxiv.org/abs/1812.07121
Rapid and stepwise changes of the magnetic field are often observed during flares but cannot be explained by models yet. Using a 45 min sequence of SDO/HMI 135 s fast-cadence vector magnetograms of the X1 flare on 2014-03-29 we construct, at each tim
Externí odkaz:
http://arxiv.org/abs/1808.07079