Multiple outflows and delayed ejections revealed by early imaging of novae.

ABSTRACT: Novae are thermonuclear eruptions on accreting white dwarfs in interacting binaries. Although most of the accreted envelope is expelled, the mechanism-impulsive ejection, multiple outflows or prolonged winds, or a common-envelope interaction-remains uncertain. Gigaelectronvolt γ-ray detections from >20 Galactic novae establish these eruptions as nearby laboratories for shock physics and particle acceleration, underscoring the need to determine how novae eject their envelopes. Here we report on near-infrared interferometry, supported by multiwavelength observations, of two γ-ray-detected novae. The images of the very fast 2021 nova V1674 Her, taken just 2-3 days after discovery, reveal the presence of two perpendicular outflows. The interaction between these outflows probably drives the obs

SUBMITTER: Aydi E 

PROVIDER: S-EPMC12923362 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature