Timo Laitinen
Timo Laitinen
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Astrophysics - Solar and Stellar Astrophysics
Drift-induced Deceleration of Solar Energetic Particles
We investigate the deceleration of solar energetic particles (SEPs) during their propagation from the Sun through interplanetary space, …
S. Dalla
,
M. S. Marsh
,
T. Laitinen
Cite
DOI
arXiv
Correcting for Interplanetary Scattering in Velocity Dispersion analysis of Solar Energetic Particles
To understand the origin of Solar Energetic Particles (SEPs), we must study their injection time relative to other solar eruption …
T. Laitinen
,
K. Huttunen-Heikinmaa
,
E. Valtonen
,
S. Dalla
Cite
DOI
arXiv
SPARX: A modeling system for Solar Energetic Particle Radiation Space Weather forecasting
The capability to predict the parameters of an SEP event such as its onset, peak flux, and duration is critical to assessing any …
M. S. Marsh
,
S. Dalla
,
M. Dierckxsens
,
T. Laitinen
,
N. B. Crosby
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DOI
arXiv
Injection of thermal and suprathermal seed particles into coronal shocks of varying obliquity
Context. Diffusive shock acceleration in the solar corona can accelerate solar energetic particles to very high energies. Acceleration …
M. Battarbee
,
R. Vainio
,
T. Laitinen
,
H. Hietala
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DOI
arXiv
Solar energetic particle drifts in the Parker spiral
Drifts in the Parker spiral interplanetary magnetic field are known to be an important component in the propagation of galactic cosmic …
S. Dalla
,
M. S. Marsh
,
J. Kelly
,
T. Laitinen
Cite
DOI
arXiv
Drift-induced Perpendicular Transport of Solar Energetic Particles
Drifts are known to play a role in galactic cosmic ray transport within the heliosphere and are a standard component of cosmic ray …
M. S. Marsh
,
S. Dalla
,
J. Kelly
,
T. Laitinen
Cite
DOI
arXiv
Energetic Particle Cross-field Propagation Early in a Solar Event
Solar energetic particles (SEPs) have been observed to easily spread across heliographic longitudes, and the mechanisms responsible for …
T. Laitinen
,
S. Dalla
,
M. S. Marsh
Cite
DOI
arXiv
Particle scattering in turbulent plasmas with amplified wave modes
High-energy particles stream during coronal mass ejections or flares through the plasma of the solar wind. This causes instabilities, …
S. Lange
,
F. Spanier
,
M. Battarbee
,
R. Vainio
,
T. Laitinen
Cite
DOI
arXiv
Energetic Particle Diffusion in Critically Balanced Turbulence
Observations and modeling suggest that the fluctuations in magnetized plasmas exhibit scale-dependent anisotropy, with more energy in …
T. Laitinen
,
S. Dalla
,
J. Kelly
,
M. Marsh
Cite
DOI
arXiv
Cross-field Transport of Solar Energetic Particles in a Large-scale Fluctuating Magnetic Field
The trajectories of solar energetic particles in an interplanetary magnetic field exhibiting large-scale fluctuations due to footpoint …
J. Kelly
,
S. Dalla
,
T. Laitinen
Cite
DOI
arXiv
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