Computational Astrophysics
Territory
of Implicit Solvers
for Dissipative Plasmaflows
and Magnetic Confinement
in Astrophysics


Contact:
Ahmad.Hujeirat (at) iwr.uniheidelberg.de
PD Dr. Ahmad A. Hujeirat (PD: Physics/Uni. Basel)
IWR/ Interdisciplinary Center for Scientific Computing
The University of Heidelberg
Im Neuenheimer Feld 368
69120 Heidelberg, Germany
Tel.: (+49) 6221  54****, Fax.: (+49) 6221  54  ****


Group Composition:
Prof. Dr. Max Camenzind
Sofie Fehlmann
Robert Prem
Dr. Steffen Brinkmann
Dipl. Phys. Bernhard W. Keil (pr.)
Dipl. Phys. Paul P. Hilscher (pr.)
Felix Brezinski (pr.)
Dave Gobrecht (pr.)

RESEARCH INTERESTS:
The focus of my research is to use mathematical and computer tools to study diverse
unresolved phenomena in high energy astrophysics.
The topics are:
 Mathematical and theoretical astrophysics
 Implicit numerical methods in astrophysical fluid dynamics
 Numerical general relativity
 Development of the ultimate solver: GRIMHD
Astrophysical applications:
 Collapse of clouds and generation of stars
 Accretion disks around compact stars and in AGNs
 Formation and acceleration of jets around stellar and supermassive black holes
 Current activities:Xray bursts on neutron stars and gammaray bursts
Students:
are welcome to pursue theoretical and/or numerical research in one of the
above
mentioned topics towards achieving
their Bachelor, Master, Diploma or PhD degrees.
Suggestions for Master & Doctorial Theses
Publications
Complete list at the Astrophysical Database (ADS)
Selected Publications
Mathematical physics: Matched asymptotic expansion

"A model for electromagnetic extraction of rotational energy and formation of accretionpowered jets in radio galaxies", 2004, A&A, 416 423, Hujeirat, A.
Implicit numerical methods in astrophysical fluid dynamics:
 "A problemorientable numerical algorithm for modeling multidimensional radiative MHD flows in astrophysicsâ€”the hierarchical solution scenario", 2005, CoPhC, 168, 1, Hujeirat, A.
 "A method for relaxing the CourantFriedrichLevy condition in timeexplicit schemes", 2005, A&A, 430, 893, Hujeirat, A.
Numerical general relativity:
 "An implicit numerical algorithm for solving the general relativistic hydrodynamical equations around accreting compact objects", 2008, NewA, 13, 436, Hujeirat, A., Camenzind, M., Keil, B. W.
Accretion disks, jets, Xray and GRBs:
 "Angular momentum transport during Xray bursts in neutron stars: a numerical general relativistic hydrodynamical study", 2009, A&A, 496, 609, Hujeirat, A., Thielemann, F.K.
Links:
 New
astropictures
 Modern Numerical Methods
 Unresolved problem in high energy astrophysics