In this episode, we say goodbye to one of our beloved hosts, Sabrina Berger. We take a voyage through the depths and breadths of Sabrina’s research experience. Cole tells us how Sabrina investigates JWST’s ability to estimate the masses of galaxies through the glare of their quasars, and Lucia tells us how Sabrina used navigation satellites to calibrate radio telescopes. In between, we quiz Sabrina on her own ASB episodes and finish with Sabrina’s experience in 3 different countries and Sabrina’s advice for future grad students!
Episode 105.5: NASA Needs Your Help!
In this episode, the (domestic) American sector of Astro[sound]bites covers the recent proposed budget cuts to NASA, the largest in NASA’s entire history. We cover the downsides that these cuts would have for science and the economy, and what you can do to speak out.
Episode 105: Citizen Brain
In today’s episode, Cormac, Cole and Lucia catch you up with all things Citizen Science. In the epoch of ChatGPT, Grok and Gemini (no, not the telescope), it’s easy to forget about the 20 Watt computer you’re using to read this sentence. Yes, even YOU can contribute to cutting-edge astronomical research, as we present two examples of cosmic crowdfunding in action. Cole convinces us that nearby galaxies need some Clump Scouts, and Lucia shows us how volunteers have been the (tur)key to finding a new star-studded dwarf galaxy. We also discuss the non-research benefits of democratising science, and in a fourth-wall-shattering pivot, we ask you, yes YOU, what you’d like to hear more of on a[s]b!
Episode 104: Star Destroyers
That stars die will be old news for most listeners. But sometimes, stars don’t just die, they get ripped apart by supermassive black holes. Cormac, Cole, and Lucia discuss these so-called tidal disruption events. Specifically, how these events are connected to X-ray absorption features called extreme coronal lines. The hosts also take a look at one of the true superstars of supernova remnants: the Crab Nebula. As it turns out, studying the ejecta can give clues about the pulsar at the heart of the nebula. The discussion revolves around the every-day of doing science. Spoiler: it’s not all like solving exercise sheets.
Episode 103: Lambasting Lambda CDM
Shoot, someone made the mistake of letting Cole pick the episode topic. In this episode, Cole, Cormac, and Shashank talk about the big boy on cosmology campus: Lambda CDM. This model has gotten a bit too big for its britches we think: what are the things about the universe that this model can’t explain? Shashank gives us a tour through the dark matter hearts of galaxies which don’t match up with cosmological predictions and Cormac shows us how 1500 (ish? We’re not clear on this one.) supernovae could hint at a fundamental flaw in Lambda CDM.
Episode 102: Per-severance Ad Astra
In this episode, Cormac, Lucia and Cole lift the lid on the lifecycle of space missions by peering into a preponderance of proposals. If you’ve ever wondered how your favourite telescope, rover or probe made it into space, then wonder no more. Lucia brings us a novel way to track potentially hazardous space junk using 5G, while Cole teases us with some magnetic results from the LISA Pathfinder mission. We also discuss our favourite proposed space missions, and debate the right balance between risk and reward.
Episode 101: Weather Woes
In this episode, we take a dive into weather phenomena in space. Shashank, Cormac and Lucia discuss what the terms hot and cold mean in space and the temperature ranges we tend to see outside the Solar System and the galaxy. Then, Cormac tells us about the climate on Venus and Lucia delves into cold fronts between galaxies. Finally, we round off with some hot takes about the most underrated parts of the electromagnetic spectrum in astrophysics!
Episode 100: Be There or Be Ten Squared
Astrobites turns 100! For our ten squared-th episode we take a tour of all of the extremes of astrophysics: the heaviest and the lightest, the fastest and the slowest, the brightest and dimmest. In doing so, Shashank covers an astrobite on itty bitty particles that pack a big punch, Lucia talks about medium-ish galaxies and their black hole hearts, and Cormac panics about the danger of violent kilonovae. To help us celebrate, we meet up with some old friends to discuss dark matter, exoplanets, and how ridiculously long a Ph.D. takes.
Episode 99: The Grand Finale
Danger - explosive! This week’s episode is all about supernovae. These star-ripping, neutrino spewing explosions are important to various fields of astrophysics. Cormac, Cole, and Lucia discuss just when stars actually go supernova. And also, whether we can use gravitational waves to tell which compact object is left behind. Everybody gets to share their favourite supernova science and (as we all love to do) to complain about how much astronomers love old, inconsistent nomenclature. Enjoy!
Episode 98: When PIGS Fly
In this episode, Cormac, Shashank and Cole dig deep into Galactic Archaeology as we look into the past of our Milky Way. Cole brings us a catastrophic computational collision, while Shashank gives us the low-down on low-metallicity, and we see just how the (Gaia) sausage gets made. We also discuss the rights, wrongs and funnies of Astronomers trying to name things, and the diverse design philosophies behind some of our favourite observational facilities.
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