Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Mechanical heating by active galaxies.

Mitchell C Begelman1, Mateusz Ruszkowski

  • 1JILA, University of Colorado, 440 UCB, Boulder, CO 80309-0440, USA. mitch@jila.colorado.edu

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|February 1, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Collisionless Magnetorotational Turbulence in Pair Plasmas: Steady-State Dynamics, Particle Acceleration, and Radiative Cooling.

Physical review letters·2024
Same author

Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays.

The astronomy and astrophysics review·2023
Same author

Electron and Ion Energization in Relativistic Plasma Turbulence.

Physical review letters·2019
Same author

Kinetic Turbulence in Relativistic Plasma: From Thermal Bath to Nonthermal Continuum.

Physical review letters·2017
Same author

Advanced assessment of the endogenous hormone level as a potential biomarker of the urogenital tract cancer.

Combinatorial chemistry & high throughput screening·2013
Same author

Gamma-ray burst jet dynamics and their interaction with the progenitor star.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2007
Same journal

Inverse FIP effect plasma in the solar atmosphere: a synthesis of current understanding and new insights from AR 11967.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same journal

Signs of sulfur fractionation under high magnetic field strength.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same journal

First ionization potential fractionation of sulfur observed with spectral imaging of the coronal environment.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same journal

Chromospheric dynamics and turbulence regulate the solar FIP effect.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same journal

Exploring the link between wave activity in the photospheric velocity driver and the FIP bias in the solar corona.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same journal

Radiative hydrodynamic simulations of first ionization potential fractionation in solar flares.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
See all related articles

Active galactic nuclei (AGN) jets and winds provide mechanical heating to galaxy clusters. This study explores effervescent and episodic heating mechanisms to explain energy balance and observed excess entropy in galaxy clusters.

Area of Science:

  • Astrophysics
  • Galaxy Evolution
  • Plasma Physics

Background:

  • Accreting black holes generate jets and winds, significant energy loss mechanisms.
  • These outflows mechanically heat surrounding environments via shocks and gentler processes.
  • Understanding this heating is crucial for galaxy cluster dynamics.

Purpose of the Study:

  • Investigate the nature and distribution of mechanical heating by central active galactic nuclei (AGN) in galaxy clusters.
  • Assess if 'effervescent heating' can balance radiative losses in cluster cores.
  • Explain the origin of excess entropy observed at larger radii.

Main Methods:

  • Utilizing numerical simulations to model AGN feedback.
  • Employing analytic models to understand heating mechanisms.

Related Experiment Videos

  • Analyzing energy transfer processes in galaxy cluster environments.

    • Main Results:

    • Mechanical heating from AGN outflows plays a key role in galaxy cluster evolution.
    • Effervescent heating is explored as a mechanism for core energy compensation.
    • Episodic heating by AGN is considered for its impact on cluster entropy.

    Conclusions:

    • AGN-driven outflows are vital for regulating the thermal state of galaxy clusters.
    • Both gentle and violent heating mechanisms contribute to the energy budget.
    • Further research is needed to fully constrain the dominant heating processes.