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JOURNALS // Sibirskii Zhurnal Industrial'noi Matematiki // Archive

Sib. Zh. Ind. Mat., 2020 Volume 23, Number 2, Pages 51–62 (Mi sjim1087)

On the angular moment operators of attenuated ray transforms of scalar 3D-fields

E. Yu. Derevtsovab

a Sobolev Institute of Mathematics SB RAS, pr. Acad. Koptyuga 4, Novosibirsk 630090, Russia
b Novosibirsk State University, ul. Pirogova 1, Novosibirsk 630090, Russia

Abstract: Under consideration are the operators of angular moments which maps the values of generalized attenuated ray transforms (ART) into the set of symmetric $p$-tensor fields. The differential relations between the values of ARTs of various orders, acting on stationary or dynamic source distributions $f$, serve as the basis for establishing the differential connections between the tensor fields of angular moments of various orders $k$ and ranks $p$. The particular cases are indicated allowing to obtain some previously known results. Connections of the ARTs of order $k$ with the problems of tomography and integral geometry as well as the established properties and connections between ARTs and angular moments can be useful as additional information when constructing the iterative algorithms for solving the problems of dynamic refraction tensor tomography.

Keywords: attenuated ray transform, back projection, operator of angular moment, tensor field, transport equation. .

UDC: 517.44:517.95

Received: 19.05.2019
Revised: 21.02.2020
Accepted: 09.04.2020

DOI: 10.33048/SIBJIM.2020.23.204


 English version:
Journal of Applied and Industrial Mathematics, 2020, 14:2, 256–264

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© Steklov Math. Inst. of RAS, 2026