TY - GEN

T1 - Two-Dimensional Hydrodynamic Escape Problem

AU - Gorbunova, K.D.

AU - Erkaev, N.V.

N1 - Conference code: 15

PY - 2026

Y1 - 2026

N2 - The article considers a two-dimensional formulation of the problem of hydrodynamic atmospheric escape by example of the warm mini-Neptune TOI-421c. The calculations use a spherical grid with interpolation of the EUV intensity function from a rectangular grid. The obtained two-dimensional profiles of physical parameters in the upper atmosphere are presented. It is shown that calculations in a one-dimensional formulation of the problem overestimate the mass-loss rate, and a fitting parameter has been established to refine this rate. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2026.

AB - The article considers a two-dimensional formulation of the problem of hydrodynamic atmospheric escape by example of the warm mini-Neptune TOI-421c. The calculations use a spherical grid with interpolation of the EUV intensity function from a rectangular grid. The obtained two-dimensional profiles of physical parameters in the upper atmosphere are presented. It is shown that calculations in a one-dimensional formulation of the problem overestimate the mass-loss rate, and a fitting parameter has been established to refine this rate. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2026.

KW - Atmospheric escape

KW - Exoplanet

KW - Mathematical modelling

KW - Two-dimensional problem

KW - Upper atmospheres

UR - https://www.mendeley.com/catalogue/b5c76f6a-1529-3ffa-b881-50d1c5d4b6f0/

U2 - 10.1007/978-3-031-92928-1_33

DO - 10.1007/978-3-031-92928-1_33

M3 - статья в сборнике материалов конференции

T3 - Springer Proceedings in Earth and Environmental Sciences

SP - 451

EP - 463

BT - Problems of Geocosmos—2024 (ICS 2024)

PB - Springer Nature

Y2 - 22 April 2024 through 26 April 2024

ER -