Limitations and rotation of the two-armed phase spiral in the Milky Way stellar disc
Context. The Milky Way’s history of recent disturbances is vividly demonstrated by a structure in the vertical phase-space distribution known as the Gaia phase spiral. A one-armed phase spiral has been seen widely across the Milky Way disc, while a two-armed one has only been observed in the solar neighbourhood.Aims. This study aims to determine the properties of the two-armed phase spiral and to