Search Publications
Stellar Evolution and Axion-Like Particles: New Constraints and Hints from Globular Clusters in the GAIA DR3 Data
Troitsky, S. V.
Axion-like particles (ALPs) are hypothetical pseudoscalar bosons, natural in extensions of the Standard Model. Their interactions with ordinary matter and radiation are suppressed, making it challenging to detect them in laboratory experiments. However, these particles, produced within stellar interiors, can provide an additional mechanism for ene…
On nonlinear cascades and resonances in the outer magnetosphere
Kozak, L.; Amata, E.; Kronberg, E. A. +10 more
The paper addresses nonlinear phenomena that control the interaction between plasma flow (solar wind) and magnetic barrier (magnetosphere). For the first time we demonstrate that the dominant solar wind kinetic energy: (i) excites boundary resonances and their harmonics which modulate plasma jets under the bow shock; (ii) produces discrete three-w…
Anomalous interaction of a plasma flow with the boundary layers of a geomagnetic trap
Zhang, H.; Kozak, L.; Amata, E. +14 more
Using the data from the Interball-1, GEOTAIL, THEMIS and CLUSTER satellites, we propose a mechanism of anomalous magnetosheath dynamics. This mechanism yields that plasma boundaries can be locally deformed over distances comparable to its thickness. In particular, the magnetospheric boundary, the magnetopause, is deformed over distances up to a fe…
High energy jets in the Earth's magnetosheath: Implications for plasma dynamics and anomalous transport
Lucek, E.; Khotyaintsev, Y.; Amata, E. +16 more
High energy density jets in the magnetosheath near the Earth magnetopause were observed by Interball-1 [1]. In this paper, we continue the investigation of this important physical phenomenon. New data provided by Cluster show that the magnetosheath kinetic energy density during more than one hour exhibits an average level and a series of peaks far…
Strong space plasma magnetic barriers and Alfvénic collapse
Zelenyi, L. M.; Khotyaintsev, Y.; Dunlop, M. +9 more
High-magnitude magnetic barriers in space and solar plasma are proposed to be attributed to the pile up of magnetic field lines and their Alfvénic collapse for MHD flows. The analysis of experimental data from both the Interball and Cluster spacecrafts shows that high-magnitude magnetic structures found in the Earth magnetosheath and near the magn…