The Oldest Starlight
What if some of JWST’s most extreme high-redshift galaxy candidates aren’t galaxies at all, but the explosive deaths of the very first stars?
Global Calm, Local Chaos: How AGN-Driven Cosmic Rays Reshape Galaxies from the Inside
Massive galaxies all seem to end up quiet and quenched—but the physics inside them can look wildly different. This story explores how AGN-driven cosmic rays reshape galaxies from the inside out, changing local conditions without altering their ultimate fate.
It’s a bird! It’s a plane! It’s a neutrino observatory calibration source!
Title: Radio emission from airplanes as observed with RNO-G Authors: The RNO-G Collaboration S. Agarwal, J. A. Aguilar, N. Alden, S. Ali, P. Allison, M. Betts, D. Besson, A. Bishop, O. Botner, S. Bouma, S. Buitink, R. Camphyn, J. Chan, S. Chiche, B. A. Clark, A. Coleman, K. Couberly, S. de Kockere, K. D. de Vries, C. Deaconu, P. Giri, C. Glaser, T. Glüsenkamp, H. Gui, A. Hallgren, S. Hallmann, J. C. Hanson, K. Helbing, B. Hendricks, J. Henrichs, N. Heyer, C. Hornhuber, E. Huesca Santiago, K. Hughes, A. Jaitly, T. Karg, A. Karle, J. L. Kelley, J. Kimo, C. Kopper, M. Korntheuer, M. Kowalski, I. Kravchenko, R. Krebs, M. Kugelmeier, R. Lahmann, C.-H. Liu, M. J. Marsee, Z. S. Meyers, K. Mulrey, M. Muzio, A. Nelles, A. Novikov, A. Nozdrina, E. Oberla, B. Oeyen, N. Punsuebsay, L. Pyras, M. Ravn, A. Rifaie, D. Ryckbosch, O. Schlemper, F. Schlüter, O. Scholten, D. Seckel, M. F. H. Seikh, J. Stachurska, J. Stoffels, S. Toscano, D. Tosi, J. Tutt, D. J. Van Den Broeck, N. van Eijndhoven, A. G. Vieregg, A. Vijai, C. Welling, D. R. Williams, P. Windischhofer, S. Wissel, R. Young, A. Zink First Author’s Institution: Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander-University Erlangen-Nürnberg; Deutsches Elektronen-Synchrotron DESY Status: Published in the Journal of Instrumentation [open access] Neutrinos: Long-Distance Travelers If, in the middle of an intercontinental flight, you’ve ever looked out your window over, say, Greenland and wondered how this trip still isn’t over…just remember that your long-distance travels have nothing on the neutrino’s. This particle only very rarely interacts with other matter, so it can travel far across...
I Survived a Type Ia, and All I Got Was This Kick Velocity
Some type Ia supernovae involve a companion star that somehow survives the energetic explosion. What can we learn from these companions?
Low, Low, and Lower: A Binary Ultracool Dwarf System is Detected at 340 MHz
The lowest mass stars have been well-studied across the mid and high frequency radio bands. However, lower frequencies can reveal larger-scale magnetic structures and may even be the key to the first direct radio detection of an exoplanet. Learn about the first detection of a low-mass ultracool dwarf–one or both stars in a binary system–at the low frequency of 340 MHz!
A tale of two toy models: towards understanding the geometry of cosmic rays in the Milky Way
Today’s astrobite looks at how we can use observations of gamma-rays and neutrinos to test our models of cosmic rays.