New Sky Notes for October by Brian our Director of Observations
New Looking Forward to October-November Planetary notes By Alan Clitherow now online
New season winter 2025-2026 meetings start 10th October with a talk by Riccarda Beckman, ROE – Black hole spin
Astrophysical black holes are described by two properties: their mass and their spin. While the mass evolution of black holes in the context of their host galaxies has been the subject of many studies, comparatively little is understood about the spin of massive black holes. Much like the mass, the spin of black holes evolves over time, but unlike mass, which can only increase, spin can increase, decrease and reorient. This makes its evolution a much more complicated problem. In this talk I will discuss why black hole spin is central to understanding the evolution of massive black holes, and the galaxies that host them.
The Dundee Astronomical Society was formed in 1956 and is affiliated to the British Astronomical Association BAA (to whom we send observations). In addition the Society has a number of honorary members throughout the country.
We would normally hold member meetings once or twice a month at the Mills Observatory, Balgay Hill, Dundee in the months October through to March. The first part of the meeting consists of a talk lasting about an hour from a guest or member, followed by a short tea break, then a shorter session for members to make their contributions.
The Society has a healthy membership and welcomes new members. Please contact our Secretary for further information via the Links page.
