An international collaboration of astronomers led by Armagh Observatory and Planetarium has launched a groundbreaking study into the most massive stars in our local dwarf galaxies, the Small and Large Magellanic Clouds. Led by the organisation’s Professor Jorick Vink, the XShootU consortium collaborated with the Space Telescope Science Institute to Read more…
The first planet to be discovered around a regular star was made in 1995 and orbits its host star 51 Peg every 4.2 days. In the nearly 30 years since the first discovery of an exoplanet (as planets orbiting stars other than our Sun are called) we now know of Read more…
Regular readers of these notes may have heard of the Gravitational-wave Optical Transient Observer (GOTO) project which aims to detect the optical counterpart of Gravitational Wave events. These events are due to the collision of neutron stars, or a neutron star colliding with a black hole. The scientists involved in Read more…
Armagh is a partner in two telescope projects whose key goal is to detect the optical counterpart of colliding massive dead stars. Albert Einstein predicted that when two massive objects spiral around each other, eventually merging to become one more massive object, gravitational waves would be emitted. Scientists spent a Read more…
by AOP Astronomer Gavin Ramsay Today the European Space Agency (ESA) successfully launched its Jupiter Icy Moons Explorer (JUICE) mission from Kourou in French Guiana on an Ariane 5 launcher after it was delayed for a day due to a weather forecast of potential storms. In the planning stage for Read more…
Solving a 40 year cosmic mystery about interstellar gas only to uncover an even deeper one. Author: Michael Burton, Director of the Armagh Observatory and Planetarium Hydrogen molecules have been found in clouds of shocked gas in interstellar space that are at temperatures of around 5,000 degrees. This is much Read more…
Want to know more detail about the research described in this Astronotes article on ultra-hot hydrogen molecules? Here are five papers spanning more than four decades of research that helped lead to this discovery of ultra-hot molecular hydrogen: Velocity profiles in the 2.1 micron molecular hydrogen line emission line in the Orion Molecular Cloud Read more…
World renowned astronomical research centre, Armagh Observatory and Planetarium, has co-authored a research paper that announces the discovery of eight new and very hot stars with effective temperatures exceeding 100,000K. Published by the Royal Astronomical Society, the paper* is based on data gathered using the Southern African Large Telescope Read more…
An international collaboration of ten partners, including Armagh Observatory and Planetarium, has developed an innovative new telescope, made up of two identical arrays on opposite sides of the planet, which will track down sources of gravitational waves such as merging Neutron Stars and Black Holes. The Gravitational-wave Optical Transient Observer Read more…
Written by Gavin Ramsay A number of Armagh astronomers travelled this week to the University of Warwick in England to take part in the first `in-person’ UK National Astronomy Meeting since 2019. Over 800 people participated either in person or remotely. For many PhD students it was the first big Read more…
The NASA/ESA/CSA James Webb Space Telescope reveals emerging stellar nurseries and individual stars in Carina Nebula that were previously obscured. The new images showcase how Webb’s cameras can peer through cosmic dust, shedding new light on how stars form. Objects in earliest, rapid phases of star formation difficult to capture, Read more…
Burcu Gunay, Ege University, Turkey We have developed a new method to look for carbon compounds in space, akin to prospecting for oil on Earth. Between the stars lie vast amounts of interstellar gas and dust, spread thinly throughout our Galaxy. The dust can contain compounds of carbon. When it Read more…
Returning for the first time since the pandemic, the International Astronomical Union hosted IAU Symposium 361: Massive Stars Near and Far; in the Slieve Russell; with Armagh Observatory and Planetarium taking part in the research discussions and educational outreach. This international conference bought together over 230 observational and theoretical astrophysicists Read more…
Astronomers using a network of radio telescopes across the entire planet have finally been able to take the first picture of the supermassive black hole at the centre of the Milky Way. Members of the Armagh Observatory and Planetarium were present to hear this news live. Commenting from Read more…
Astronomy, and I’m sure you’d agree, is the most wonderous science of all. You are dealing with, literally, the biggest questions in the Universe from “how was the Universe formed?” to “Is there other life out there?”, but it is also, arguably, the easiest science to do yourself. If you Read more…
It’s been just over two months since The James Webb Space Telescope was launched into space. On Christmas Day 2021, Professor Michael Burton watched the launch online, whilst enjoying his Christmas dinner! So, what has happened since launch day and where is the telescope now? We find out more from Read more…
The story of Jocelyn Bell Burnell’s discovery of pulsars is one of the best known in astronomy. The story of how, as a graduate student at the University of Cambridge, she detected “a bit of scruff” on the chart recorder of the radio telescope designed by her supervisor Anthony Hewish. Read more…
It wasn’t long after the invention of radio technology towards the end of the 19th century that scientists considered using the new medium to contact beings on other planets in the Solar System with Mars being the first target. However, with the early probes to Mars and Venus showing no Read more…
The month of December offers us the most intense meteor shower of the year. These are the Geminids, so-called because they appear to emanate from the constellation of Gemini the Twins. At the peak of the shower, over 120 meteors – two meteors every minute – can be spotted under Read more…
Hubble Space Telescope (HST) has been in space since 1990 and has resolved many long-standing problems in astronomy, whilst raising new ones thus improving our knowledge and curiosity significantly. It has been the most important telescope we had for 31 years. Now it’s time to relay the mission to its Read more…
Archbishop John McDowell, Chair of the Armagh Observatory and Planetarium (AOP) Board of Governors welcomed invited guests to the Planetarium today (Wednesday 6 October) to formally launch its ambitious new 2021-2026 Strategy. In his opening address Archbishop McDowell reflected on how impressed he has been since taking up the role Read more…
At least one out of four white dwarfs will end its life as a magnetic star! At the end of their life, most of the stars shrink in size to the dimension of a small planet, a stage of the stellar evolution which is called “white dwarf”. In a new Read more…
by Apostolos Christou During the past week, Earth passed through the core of the Perseid meteor shower. The peak of the shower – when up to 100 Perseids could be observed under clear conditions away from light pollution – occurred between the 11th and 13th of August. Three bright Perseids Read more…
A team of astronomers have used the European Southern Observatory’s Very Large Telescope (ESO’s VLT) in Chile to shed new light on planets around a nearby star, L 98-59, that resemble those in the inner Solar System. Amongst the findings are a planet with half the mass of Venus — Read more…
Armagh Observatory and Planetarium is delighted to announce its latest elected members to the organising committees of the prestigious International Astronomical Union (IAU), cementing its place as a leading research institution of influence on the global stage. Three Astronomers working at the Armagh Observatory, Stefano Bagnulo, Michael Burton, and Simon Read more…
When Apollo 15 astronauts David Scott and Jim Irwin touched down near the lunar Appenine mountains in the summer of 1971, they brought along a rover to aid them in their exploits. The use of this Lunar Roving Vehicle – or LRV as it was called – was the first Read more…
Do you remember comet 67P/Churyumov-Gerasimenko? It was the target of the ESA’s Rosetta spacecraft, which visited and ultimately crash landed into the comet in its previous passage close to the Sun in 2014-2016. Rosetta made history as being the first spacecraft to ever orbit and land (with Philae) on a Read more…
PDRA Stellar Astrophysics – Armagh Observatory and Planetarium Armagh Observatory and Planetarium (AOP) invites applications for a Postdoctoral Research Fellow in Stellar Astrophysics. The successful applicant will work with Professor Simon Jeffery on a programme entitled “helium-rich subluminous stars and connections in stellar evolution”. The context for this programme is Read more…
AOP scientists lauded for ground-breaking computer model Scientists at Armagh Observatory and Planetarium (AOP) have developed a ground-breaking new computer model which will play a key role in explaining how Supermassive Black Holes are formed as well as having the potential to shape the world of Astrophysics for the next Read more…
Scientists track comet which has been in orbit for millions of years in another solar system An international team of scientists led by Armagh Observatory and Planetarium astronomer, Dr Stefano Bagnulo has conducted ground-breaking research on a comet which has been in orbit for millions of years in another solar Read more…
Armagh Observatory and Planetarium (AOP), in partnership with the Institute of Physics (IoP), delivered its first UK Research and Innovation (UKRI) Introductory Course for starting PhD students in Astronomy. The course, which was to take place in the summer of 2020, was postponed due to Covid-19. AOP and IoP put Read more…
The Armagh Robotic Telescope (ART) is the youngest, and most advanced, telescope housed at the Armagh Observatory and Planetarium (AOP). It has been 10 years since first light was achieved, and we would like to take this opportunity to talk to the man behind the telescope. Professor Simon Jeffery has Read more…
AOP’s Dr. Andreas Sander has been involved in a scientific first unravelling the mysteries of rare stars! Within the constellation Cygnus, an elderly star and its massive companion are having one last hurrah, flinging off mass at an incredible rate before they explode as supernovae and collapse into a black Read more…
It’s easy to forget that it was only 25 years ago that the first planet around another Sun-like star was discovered. Since then, research into ‘exoplanets’ has become one of the most active areas of astronomy, with links being made with groups working on theoretical models of how planetary systems Read more…
Written by Dr. Gavin Ramsay One of humankinds greatest achievements was made on 14th Sept 2015 when the first direct detection of a gravitational wave event was made using the aLIGO observatories in Washington State and Louisana in the USA. This event was the result of two Black Holes, each Read more…
By Prof. Simon Jeffery Enter the name ‘PHL 417’ in the public database which tells you nearly everything known about nearly every star in the sky, and you will find an almost blank entry. It is enigmatically identified as a ‘Blue object’ of the 17th magnitude, or about 200,000 times fainter than the faintest stars visible to the naked eye. It has no other names, and no scientific Read more…
by Apostolos Christou An international team of planetary scientists led by astronomers at AOP have found an asteroid trailing behind Mars with a composition very similar to the Moon’s. The asteroid could be an ancient piece of debris, dating back to the gigantic impacts that formed the Moon and the Read more…
by Galin Borisov and Apostolos Christou This September, we had the first opportunity to make astronomical observations while physically present at the telescope since the start of the COVID19 pandemic. Our instrument of choice was the 2-m RCC telescope at Rozhen Observatory on the Rhodope mountains in SW Bulgaria. So here we are at 1700m above sea level with a forecast for good weather and ready for new discoveries! One Read more…
The NASA/ESA’s Hubble Space Telescope has tracked the fading light of a supernova in the spiral galaxy NGC 2525, located 70 million light years away. Supernovae like this one can be used as cosmic tape measures, allowing astronomers to calculate the distance to their galaxies. Hubble captured these images as Read more…
The answer is possibly, after an international team of astronomers announced the discovery of a rare molecule, phosphine, in the clouds of Venus. Phosphine, which is a molecule made up of one phosphorus atom and three hydrogen atoms, is a gas only made industrially on Earth or by microbes that thrive Read more…
In a new paper, Simon Jeffery reports the discovery of standing waves on two small hot stars similar to the pattern of jet streams seen in the Earth’s atmosphere.
By Simon Jeffery, AOP Research Astronomer In 1930, Dorrit Hoffleit reported that star number #4749 in the Harvard List of variables had faded four times between 1897 and 1929, and identified it as an R Coronae Borealis (RCB) variable. RCB stars are luminous low-mass stars (red giants) with surfaces around Read more…
Research Astronomer Dr Apostolos Christou reports on a new model to explain the two “oddball’’ moons of Neptune: Triton, a >2000 km diameter satellite that circles Neptune in the opposite direction that the planet rotates; and 300-km Nereid, the planetary moon with the most elongated orbit in the solar system. Read more…
Breaking astronomy news! The European Southern Observatory, in combination with other institutes, has discovered a black hole – and it’s a mere 1000 lightyears from Earth! This newly discovered Black Hole forms part of a triple system (called HR6819) that can be seen with the naked eye. Petr Hadrava, Emeritus Read more…
The transition region in the Sun is the atmospheric layer that separates the cooler chromosphere from the hotter corona. Studying the structure and dynamics of the transition region requires greater attention as these provide critical information on the supply of mass and energy from the lower atmosphere to the corona and Read more…
By Christopher Duffy Studies of the sun, our closest star, have shown that sun spot activity and solar eruptions, also known as solar flares, are strongly correlated – regions of the sun with many sun spots are found to be the typical point of origin for most solar flares. This Read more…
By Professor Gerry Doyle The solar chromosphere is a complex magneto-plasma system that offers the evolution of a variety of plasma dynamics (e.g., jets, mass motions, shocks) as well as magnetic waves. It is separated by the inner corona through the particular discontinuities of mass, density, temperature, characteristic speeds, etc. Read more…
By Marc Sarzi, AOP Head of Research In an age dominated by fast-paced but also dispersive and often incorrect communications, we are often exposed to misleading or irrelevant information. Obtaining reliable news and advice is particularly important today as we live through the middle of the COVID-19 pandemic. For this Read more…
By Bill Napier, AOP Visiting Astronomer A comet typically comprises about 50% fine dust embedded in a frozen matrix of water, methane, carbon dioxide and other organic compounds. Approaching the inner planetary system it begins to disintegrate, with fragments splitting off along with dust and gas. The fragments spread around Read more…
Just released are first images and videos from the National Science Foundation’s (NSF) Daniel K. Inouye Solar Telescope (DKIST) – revealing unprecedented detail of the Sun’s surface, with experts saying it will enable a new era of solar science and a leap forward in understanding the Sun and its impacts Read more…
AOP researchers have used data from a NASA space mission to shed light on one of the most violent phenomena in our solar system – magnetic explosions on the surface of the Sun. Abhishek Srivastava, formerly a research associate at AOP and now a solar scientist at the Indian Institute Read more…
Lying somewhere between young main-sequence stars and old white dwarfs, hot subdwarfs are blue stars with about half the mass, a tenth the diameter and ten times the brightness of the Sun.
The Sun’s corona is maintained at a temperature in excess of a million degrees. The corona lies above the solar photosphere which is maintained at 6000 degrees. These regions are only a few hundred kilometers apart. A major scientific problem in solar physics is how and why is the corona Read more…
If you are a professional astronomer working on this island, then all roads lead to Armagh for you this Autumn! AOP and the City of Armagh are proud to be hosting the Irish National Astronomy Meeting or INAM from the 4th to the 6th of September. Held each year and Read more…