Discussions around tools and discoveries in the novel domain of multi-messenger and time domain astrophysics. We'll highlight recent publications, discuss tools to faciliate observations and generally talk about the cool science behind the most violent explosions in the universe.
Multi-messenger astrophysics
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109 episodes
Updated Daily
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Podcast Overview
Discussions around tools and discoveries in the novel domain of multi-messenger and time domain astrophysics. We'll highlight recent publications, discuss tools to faciliate observations and generally talk about the cool science behind the most violent explosions in the universe.
Language
🇺🇲
Publishing Since
10/6/2024
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Recent Episodes
July 13, 2026
The Dynamic Radio Sky: Unveiling Transients with the SKAO
<p>Welcome to a deep dive into the fast-paced, explosive universe of time-domain astronomy! In this episode, we explore how the upcoming Square Kilometre Array Observatory (SKAO) will revolutionize our understanding of astrophysical transients. Operating across a massive discovery space—from coherent radio bursts lasting just microseconds to the decades-long afterglows of cosmic collisions—radio transients serve as natural laboratories for fundamental physics. We discuss the diverse menagerie of extreme events SKAO will uncover and how new automated technologies will capture the universe in action.</p><p><br></p><p>Key Topics Discussed:</p><ul><li>Fast Radio Bursts (FRBs) & Long-Period Transients (LPTs): We explore the extremes of coherent radio emission. Discover how SKAO will track millisecond-duration extragalactic FRBs across broad frequency ranges and unveil the nature of a newly discovered class of sources—Long-Period Transients (LPTs)—which emit periodic radio bursts lasting minutes to hours and may be powered by highly-magnetized white dwarf binaries or magnetars. </li><li>The Multi-Messenger Era: We unpack the synergies between SKAO and next-generation multi-messenger observatories. Learn how SKAO will hunt for the radio afterglows of binary neutron star mergers detected by 3G gravitational wave detectors, and how it will survey the localization fields of high-energy neutrinos detected by IceCube and KM3NeT to find their elusive point sources.</li><li>Gamma-Ray Synergies with CTAO: A look at how SKAO will collaborate with the upcoming Cherenkov Telescope Array Observatory (CTAO). By combining radio and very-high-energy gamma-ray data, astronomers will probe particle acceleration and shocks in extreme environments, including supernovae, X-ray binaries, novae, and tidal disruption events (TDEs).</li><li>Rapid-Response Triggering & Commensal Surveys: How do you catch a flash you didn't know was coming? We delve into the cutting-edge operational modes of the SKAO, including "rapid-response" systems that will automatically repoint the telescope in seconds based on automated alerts (like VOEvents). We also cover "commensal" transient pipelines, which hitch a ride on other dedicated observations to continuously search for unexpected transients in the image plane without requiring extra telescope time. </li></ul><p><br></p><p>References (Chapters in Advancing Astrophysics with the SKA – II):</p><ul><li>Anderson, G. E., et al. Rapid Response Triggering for Radio Transients with the SKA Observatory.</li><li>Andersson, A., et al. Commensal image plane transient search methods with the SKAO.</li><li>Caleb, M., Qiu, H., et al. Long-Period Transients as a new frontier in time-domain astronomy.</li><li>Castignani, G., Rowell, G., et al. SKAO and Gamma-Ray Synergies.</li><li>Colombo, A., et al. Gamma-ray Bursts and Kilonovae from Gravitational Wave Events.</li><li>Curtin, A. P., et al. The Astrophysics of Fast Radio Bursts.</li><li>Miller-Jones, J. C. A., et al. Unveiling Radio Transients with SKAO Telescopes.</li><li>Rösch, F., et al. A Census of Variable and Transient Radio Sources Within High-Energy Neutrino Fields.</li></ul><p><br></p><p>Acknowledements: Podcast prepared with Google/NotebookLM. Illustration credits: SKAO</p>
July 8, 2026
X-Raying the Earth: Neutrino Tomography at the South Pole
<p>Welcome back to the podcast! Today, we are exploring a groundbreaking new way scientists are looking deep inside our planet. For a century, our understanding of the Earth's interior has relied almost entirely on seismic waves and gravity. But what if we could use cosmic "ghost particles" to scan the Earth instead? </p><p><br></p><p>In this episode, we dive into a fascinating new study from the IceCube Neutrino Observatory located deep in the glacial ice at the South Pole. Using 10.7 years of data, scientists have successfully mapped the Earth's radial density profile using high-energy muon neutrinos. We discuss how these neutrinos, which usually pass right through matter undetected, become partially blocked by the Earth at extremely high energies (above ~10 TeV). By measuring how these particles are absorbed as they travel through different layers of the planet at different angles, researchers can essentially take a tomographic scan of the Earth's interior using the weak nuclear force. </p><p><br></p><p>Tune in to hear how this cutting-edge method has been used to independently calculate the Earth's mass and polar moment of inertia, yielding results that are completely consistent with traditional seismology and the Preliminary Reference Earth Model (PREM). We also discuss what this means for the future of planetary science and how next-generation neutrino telescopes will bring even sharper resolution to the hidden layers beneath our feet.</p><p><br></p><p>Reference mentioned in this episode: Abbasi, R., et al. (IceCube Collaboration). "High-Energy Neutrino Tomography of the Earth’s Interior with IceCube." arXiv:2607.02644v1 (July 2026).</p><p><br></p><p>Acknowledements: Podcast prepared with Google/NotebookLM. Illustration credits: IceCube Collaboration</p>
July 6, 2026
SVOM's First Year: From Gamma-Ray Bursts to Blazars
<p>In this episode, we dive into the exciting early results from the SVOM (Space-based multi-band astronomical Variable Objects Monitor) mission, which launched in June 2024. Originally designed to hunt for Gamma-Ray Bursts (GRBs), SVOM has proven to be a highly versatile powerhouse for all kinds of high-energy transient phenomena. We discuss its first batch of discoveries, from ancient stellar explosions at the edge of the universe to the serendipitous detections of black holes, flaring stars, and active galaxies!</p><p><br></p><p>Key Topics Discussed:</p><ul><li>The Hunt for GRBs: We look at how SVOM successfully detected 86 GRBs in its first 9.3 months. We explore how its ECLAIRs and Gamma-Ray Monitor (GRM) instruments work together to capture everything from classical long GRBs to soft X-ray flashes and short GRBs tied to neutron star mergers. </li><li>Probing the Distant Universe: A special spotlight on GRB250314A, a massive star explosion detected at a redshift of roughly 7.3. This incredible detection allows astronomers to peer back into the universe's epoch of reionization.</li><li>The Observatory Science Program: We explore SVOM's secondary objective, which focuses on tracking non-GRB events. This program has already yielded hundreds of detections, primarily consisting of low-mass and high-mass X-ray binaries.</li><li>Serendipitous Discoveries: Hear about SVOM's fascinating unexpected catches, like an X-ray outburst from the blazar 1ES 1959+650, burst oscillations from the neutron star binary 4U 0614+091, and even hard X-ray stellar flares from the binary star system HD 22468.</li><li>Multi-Wavelength Synergy: We discuss how SVOM's onboard suite of instruments—which include wide-field coded-mask imagers and narrow-field X-ray and visible telescopes—work together. We also touch on how SVOM collaborates with other observatories like Swift and Einstein Probe to provide a rapid, comprehensive view of the high-energy sky.</li></ul><p><br></p><p>References / Mentioned Articles:</p><ul><li>Daigne, F., et al. (2026). First Gamma-Ray Burst Observations with SVOM. Research in Astronomy and Astrophysics. </li><li>Coleiro, A., et al. (2026). Early results from the SVOM Observatory Science program. Research in Astronomy and Astrophysics.</li></ul><p>Acknowledements: Podcast prepared with Google/NotebookLM. Illustration credits: CNES</p>
109 total episodes available
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