3 papers
astro-ph.SR2026
Stationary Resistive MHD Solutions Near an Isolated Three-Dimensional Magnetic Null
Kuljeet Singh Saddal, Dieter H. Nickeler, Rodrigo Meneses Pacheco +1
Magnetic null points define the magnetic field topology in stellar coronae, planetary magnetospheres, and astrospheres, and are commonly associated with magnetic reconnection. We i…
astro-ph.SR2026
The existence of null points of flow and magnetic fields as prerequisites for the presence of astropauses and their co-location
Dieter H. Nickeler, Kuljeet S. Saddal, Rodrigo Meneses Pacheco +1
Astropauses can be defined via magnetic or fluid separatrices. For the boundary layer between the stellar wind and the local interstellar medium, two separatrices can occur, the ma…
astro-ph.SR2026
An Halpha survey of infrared bow-shocks around OB-type stars
Kuljeet Singh Saddal, Michaela Kraus, Dieter H. Nickeler +3
Bow shocks (BSs) around massive stars are commonly identified in mid-infrared (MIR) surveys. In contrast, systematic optical investigations of these structures remain scarce with o…