TY - GEN
T1 - Optimized gyrosynchrotron algorithms and fast codes
AU - Kuznetsov, Alexey A.
AU - Fleishman, Gregory
N1 - Funding Information:
A.K. thanks the Leverhulme Trust for financial support. This work was supported in part by NSF grants ATM-0707319, AST-0908344, and AGS-0961867 and NASA grant NNX10AF27G to New Jersey Institute of Technology, and by the RFBR grants 08-02-92204, 08-02-92228, 09-02-00226, and 09-02-00624.
PY - 2010/9
Y1 - 2010/9
N2 - Gyrosynchrotron (GS) emission of charged particles spiraling in magnetic fields plays an exceptionally important role in astrophysics. In particular, this mechanism makes a dominant contribution to the continuum solar and stellar radio emissions. However, the available exact equations describing the emission process are extremely slow computationally, thus limiting the diagnostic capabilities of radio observations. In this work, we present approximate GS codes capable of fast calculating the emission from anisotropic electron distributions. The computation time is reduced by several orders of magnitude compared with the exact formulae, while the computation error remains within a few percent. The codes are implemented as the executable modules callable from IDL; they are made available for users via web sites.
AB - Gyrosynchrotron (GS) emission of charged particles spiraling in magnetic fields plays an exceptionally important role in astrophysics. In particular, this mechanism makes a dominant contribution to the continuum solar and stellar radio emissions. However, the available exact equations describing the emission process are extremely slow computationally, thus limiting the diagnostic capabilities of radio observations. In this work, we present approximate GS codes capable of fast calculating the emission from anisotropic electron distributions. The computation time is reduced by several orders of magnitude compared with the exact formulae, while the computation error remains within a few percent. The codes are implemented as the executable modules callable from IDL; they are made available for users via web sites.
KW - Sun: flares
KW - Sun: radio radiation
KW - methods: numerical
KW - radiation mechanisms: nonthermal
KW - radio continuum: general
KW - stars: flare
UR - http://www.scopus.com/inward/record.url?scp=79959213890&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79959213890&partnerID=8YFLogxK
U2 - 10.1017/S1743921311007204
DO - 10.1017/S1743921311007204
M3 - Conference contribution
AN - SCOPUS:79959213890
SN - 9780521197410
T3 - Proceedings of the International Astronomical Union
SP - 314
EP - 316
BT - Advances in Plasma Astrophysics
A2 - Bonanno, Alfio
A2 - de Gouveia Dal Pino, Elisabete
A2 - Kosovichev, Alexander
ER -