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  • Registered groups in the Register of Research Structures of the Universitat de València - (REIUV)

High Energy and Relativistic Astrophysics - HERA

Reference of the Group:

GIUV2026-012

 
Description of research activity:
This research group is focused on the study of scenarios related with high energy and relativistic Astrophysics (HERA group). Our focus is on galactic and extragalactic relativistic jets, their radiative production and dynamical effect on their environments. The approach we follow is based on the use of relativistic hydridynamics (RHD) and magnetohydrodynamics (RMHD) codes. These codes have proved very useful in the understanding of extragalactic and galactic jet physics and evolution (see, e.g., Martí 2019, Perucho & López-Miralles, 2023). Furthermore, we develop analytical models and participate in the interpretation of observational results from these objects. Regarding international collaborations, the group keeps long-term collaborations with the Max-Planck-Institut für Radioastronomie in Bonn and the University of Würzburg (both in Germany), and currently also the Leibniz Institut at Potsdam. Other collaborations include different institutions in Spain (Universitat de Barcelona, Instituto de Astrofísica de Andalucía (Granada), Finland (Aalto) or Sweden (Chalmers). In addition, Manel Perucho is currently a Mercator fellow of the DFG (Deutsche Forschungsgemeinschaft)...This research group is focused on the study of scenarios related with high energy and relativistic Astrophysics (HERA group). Our focus is on galactic and extragalactic relativistic jets, their radiative production and dynamical effect on their environments. The approach we follow is based on the use of relativistic hydridynamics (RHD) and magnetohydrodynamics (RMHD) codes. These codes have proved very useful in the understanding of extragalactic and galactic jet physics and evolution (see, e.g., Martí 2019, Perucho & López-Miralles, 2023). Furthermore, we develop analytical models and participate in the interpretation of observational results from these objects. Regarding international collaborations, the group keeps long-term collaborations with the Max-Planck-Institut für Radioastronomie in Bonn and the University of Würzburg (both in Germany), and currently also the Leibniz Institut at Potsdam. Other collaborations include different institutions in Spain (Universitat de Barcelona, Instituto de Astrofísica de Andalucía (Granada), Finland (Aalto) or Sweden (Chalmers). In addition, Manel Perucho is currently a Mercator fellow of the DFG (Deutsche Forschungsgemeinschaft) project Relativistic Jets in Active Galaxies (Coord: Matthias Kadler; Research Unit FOR5195). This project brings together all scientific groups in Germany devoted to active galactic nuclei (AGN) jet research, around 40 scientists from 9 institutions. Mercator fellows are appointed to complement the know-how of the collaboration.
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Web:

www.uv.es/daa

 
Scientific-technical goals:
  • Our aim is to contribute to the understanding of the various astrophysical scenarios in which relativistic and high-energy processes take place through the use of numerical simulations, theoretical models and observations.
 
Research lines:
  • Extragalactic relativistic jets at parsec scales.Study of the properties of extragalactic jets in the innermost regions of active galaxies, such as stability, or the role of the magnetic field in the dynamics of the jets. In addition, we collaborate in the interpretation of radio interferometric observations of these objects.
  • Relativistic flows in binary stars.Study of the evolution of relativistic jets and the interaction between relativistic pulsar winds and stellar winds in high-mass binary stars. These scenarios are interesting as potential sources of high-energy radiation.
  • Computational relativistic magnetohydrodynamics.Design of algorithms for the numerical solution of the equations of relativistic magnetohydrodynamics.
  • Extragalactic jets at kiloparsec scales.Study of the evolution of extragalactic jets and the relevant factors in the evolution (power, mass loading by gas clouds and stellar winds within the progenitor galaxy, development of instabilities...). Effects on the host galaxy and its environment.
  • The role of galactic activity through cosmic time.This line of work tackles the role that galactic activity may have played in the host galaxy and cluster evolution through the evolution of our Universe.
 
Group members:
Name Nature of participation Entity Description
MANEL PERUCHO PLADirectorUniversitat de València
Research team
JOSE MARIA MARTI PUIGMemberUniversitat de València
KIARA HERVELLA SEOANEMemberUniversitat de València
BRUNO LONGO MemberUniversitat de València
YANNIK HOCHE MemberUniversitat de València
GAETAN FRANK FICHET DE CLAIRFONTAINE MemberUniversitat de València
SANTIAGO JAVIER BONANAD HURTADOMemberUniversitat de València
JOSE LOPEZ MIRALLESCollaboratorAURORA TECHNOLOGY (SSC SPACE) FOR THE EUROPEAN SPACE AGENCYScientific
 
Associated structure:
  • Astronomy and Astrophysics
 
Keywords:
  • RELATIVISTIC HYDRODYNAMICS
  • HYPERBOLIC SYSTEMS OF CONSERVATION LAWS
  • RELATIVISTIC MAGNETOHYDRODYNAMICS
  • HIGH-RESOLUTION CONSERVATIVE METHODS
  • BINARY STARS
  • HIGH ENERGY RADIATION
  • GALAXY CLUSTERS
  • MAGNETOHYDRODYNAMIC PROCESSES
  • VLA OBSERVATIONS
  • X-RAYS
  • ACTIVE GALACTIC NUCLEI
  • GALAXY EVOLUTION
  • VERY LONG BASELINE INTERFEROMETRY
  • RADIOASTRONOMY
  • RELATIVISTIC JET PHYSICS
  • RADIOGALAXIES
  • AGN FEEDBACK AND CLUSTER HEATING