Skip to main content Skip to navigation

Events in Physics

Show all calendar items

Mark Dieckmann (Linköping University): Interaction of a microscopic pair cloud and an ambient electron-proton plasma

- Export as iCalendar
Location: PS128
Abstract: Accreting black holes emit macroscopic collimated jets, which can reach relativistic bulk flow speeds. Black holes are usually surrounded by a dilute partially ionized gas. Radiation from the approaching jet will ionize most of the latter. This ambient plasma consists of electrons and ions and it interacts electromagnetically with the jet, which is composed of electrons, positrons and a minor fraction of ions. A boundary forms where both plasmas collide. It confines the pair plasma, it separates it from the ambient plasma and it is a source of intense
electromagnetic radiation. I present results of my recent particle-in-cell simulations that model the interaction between a spatially localized microscopic pair cloud and an initially unmagnetized electron-proton plasma for parameters that are representative for the jets of microquasars. I discuss the plasma instabilities at work, which involve carriers of positive charge with different charge-to-mass ratios. These instabilities heat up the plasma and collimate the pair cloud into a magnetized jet.
Tags: CFSA Seminar

Show all calendar items

Academic Leave Diary

Click here


Physics Days

Event listing

Research Group Events




Particle Physics



Condensed Matter Physics


Open Funder Deadlines

UKRI - Daphne Jackson Fellowship

Diamond Studentships 2024


UKRI Deadlines

Due to the implementation of a new UKRI funding system (TFS) there will be a fixed quarterly deadlines for some grants which would previously have been on open calls, this is to allow necessary system amendments and updates.

The first deadline after implementation will be 28th September 2023 and applies to those calls listed below:

EPSRC New Investigator Award

EPSRC Network Grant

EPSRC Post Doctoral Fellowship

EPSRC Open Fellowship

EPSRC Open Plus Fellowship

EPSRC Working with overseas scientists

EPSRC Standard research grant

EPSRC Discipline hopping in ICT

EPSRC Overseas travel grant