Fakultät für Physik und Astronomie

Physikalisches Kolloquium am 30.01.2023: Thema: Electron-Astrophysics — How the Smallest Scales in Space Power the Biggest Structures in the Universe

23.01.23 | Physikalisches Kolloquium, Veranstaltung

Am Montag (30.01.2023) um 12.00 Uhr c.t. findet der nächste Termin unseres Physikalischen Kolloquiums statt.

Referent ist Dr. Daniel Verscharen (University College London) zum Thema: „Electron-Astrophysics — How the Smallest Scales in Space Power the Biggest Structures in the Universe“.

Almost all of the visible matter in the Universe is in the plasma state. The smallest characteristic scales, at which electron dynamics determines the plasma behaviour, are the next frontier in space and astrophysical plasma research. The analysis of astrophysical processes at these scales lies at the heart of the research theme of electron-astrophysics. Electron scales are the ultimate bottleneck for dissipation of plasma turbulence, which is a fundamental process not understood in the electron-kinetic regime. In addition, plasma electrons often play an important role for the spatial transfer of thermal energy due to the high heat flux associated with their velocity distribution. The regulation of this electron heat flux and the role of plasma instabilities for the energetics and thermodynamics of plasmas are likewise not understood. By focussing on these and other fundamental electron processes, the research theme of electron-astrophysics links outstanding science questions of great importance to the fields of space physics, astrophysics, and laboratory plasma physics. Electron-astrophysics heavily builds upon the use of in-situ plasma measurements in accessible near-Earth space plasmas to understand the universal and fundamental processes in cosmic plasmas throughout the Universe. I will review a selection of the outstanding science questions, discuss their importance, and present a roadmap for answering them through existing and novel space-mission concepts.

Abstract Vortrag Dr. Daniel Verscharen

Die Einführung erfolgt durch Prof. Dr. Maria Elena Innocenti.

Die Fakultät lädt alle Interessierten herzlich ein. Die Veranstaltung findet im Hörsaal HNC 10 und hybrid via Zoom statt. Vor dem Kolloquium bieten wir Ihnen Kaffee und Kekse an. Über diesen Link gelangen Sie zur Zoom-Veranstaltung (MeetingID: 632 5520 9938, Passwort: 526977). Alle Termine des Physikalischen Kolloquiums finden Sie hier.

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