Astronomy

Map of the line emission of hydrogen (in red and blue) and oxygen (in green) in the PJ308-21 system, shown after masking the light from the central quasar ("QSO"). The different colors of the quasar's host galaxy and companion galaxies in this map reveal the physical properties of the gas within them. Credit: Decarli/INAF/A&A 2024 An international research group led by the Italian National Institute for Astrophysics (INAF) and comprising 34 research institutes and universities worldwide utilized the Near-Infrared Spectrograph (NIRSpec) on board the James Webb Space Telescope (JWST) to witness the dramatic interaction between a quasar inside the PJ308–21 system and two massive satellite galax...

AOP is a statutory body as set out in The Armagh Observatory and Planetarium (Northern Ireland) Order 1995. It is overseen by a Board of Governors, with the Board having delegated primary responsibility for the governance and management of the organisation to a Management Committee. AOP is sponsored by the Department for Communities (DfC). Armagh Observatory was established in 1790, with it being the oldest scientific institution in Northern Ireland and the longest continuously operating astronomical research facility in the United Kingdom and Ireland. Armagh Planetarium is the oldest operating Planetarium in the UK and Ireland, having been in operation for more than 50 years as the public face of space and astronomy in Northern Ireland. Biographical Details: Prof Ruth Hunter is a Profess...

Sunspots were widely spread on the Sun on 1 August 2023. Image: Sheri Lynn Karl. The Sun is our very own special star, which we rely on totally for our continued existence. The long summer days, hopefully blessed with the year’s best weather conditions, when the Sun rides high in the sky, are ideal for becoming better acquainted with our life-giver. When thinking of astronomy, the Sun isn’t the first thing that springs to mind but you would be missing out on glimpsing an extremely dynamic world. How is it possible to see anything when the Sun is so intensively hot and bright and what will I be able to see anyway?  A suitably filtered small telescope can reveal a wealth of detail at various wavelengths, including spectacularly in hydrogen-alpha (at 656.3nm), but observing sunspots crossing...

Multiwavelength finding chart of the inner ≈0.4 pc of the Galactic center observed in the K-band (red) and L-band (blue) observed with NACO (VLT). Credit: Astronomy & Astrophysics (2024). DOI: 10.1051/0004-6361/202449729 Observational astronomy shows that newly discovered young stellar objects (YSOs) in the immediate vicinity of the supermassive black hole Sagittarius A* located in the center of our galaxy behave differently than expected. They describe similar orbits to already known young evolved stars and are arranged in a particular pattern around the supermassive black hole. Studies show that Sgr A* causes th...