Astrophysics

  • RN Thomas 2026 Constanza Echiburú‑Trujillo and nominee Drake Miller III
    Graduate students Kirk Long and Constanza Echiburú‑Trujillo have been awarded the 2026 Richard Nelson Thomas Award, an honor rooted in JILA’s astronomy tradition that recognizes outstanding experimental contributions by graduate students. Drake Miller III and Sajal Gupta were also nominated, underscoring the depth of student research across the institute.
  • Interstellar formation of PAHs terminates at C6H5+
    JILA Fellow and University of Colorado Boulder Physics Professor Heather Lewandowski and members of her lab have shattered a 25-year-old theory about how benzene forms in the interstellar medium, revealing that the long-accepted chemical recipe doesn’t work under space-like conditions. Their groundbreaking laser-cooling experiments open a new chapter in understanding the origins of complex carbon molecules in the cosmos.
  • Photo of Dr. Taeho Ryu.
    JILA is delighted to welcome Dr. Taeho Ryu as an Associate Fellow and Assistant Professor in the Department of Astrophysical and Planetary Sciences at the University of Colorado Boulder.
  • Artist render of a black hole surrounded by a highly magnetized thin disk.
    JILA postdoctoral researcher Prasun Dhang, and JILA Fellows and University of Colorado Boulder Astrophysical and Planetary Sciences professors Mitch Begelman and Jason Dexter, turned to advanced computer simulations to model black holes surrounded by thin, highly magnetized accretion disks, to uncover the underlying physics that drives these enigmatic systems. Their findings, published in The Astrophysical Journal, offer crucial insights into the complex physics around black holes and could redefine how we understand their role in shaping galaxies.
  • Mitchell Begelman
    JILA Fellow and the Department of Astrophysical and Planetary Sciences (APS) at the University of Colorado Boulder Distinguished Professor Mitch Begelman has been inducted as a 2025 American Astronomical Society (AAS) Fellow. Joining Professor Begelman in this recognition are APS Professors James Green and J. Michael Shull, now an Adjunct Professor of Physics and Astronomy at the University of North Carolina, Chapel Hill. Together, their contributions underscore ÃÛÌÒ´«Ã½ÆÆ½â°æÏÂÔØ leadership in astrophysics and planetary sciences.
  • JILA graduate student Tatsuya Akiba (left) celebrates with advisor JILA Fellow and Astrophysical and Planetary Sciences Associate Professor Ann-Marie Madigan
    JILA graduate student Tatsuya Akiba, a Ph.D. candidate in the Astrophysical & Planetary Sciences department at the University of Colorado Boulder, has received the prestigious 2024 Richard Nelson Thomas Award. This honor is bestowed annually to an outstanding APS graduate student at JILA and recognizes excellence in research and academic achievements.
  • Planetesimal orbits around a white dwarf. Initially, every planetesimal has a circular, prograde orbit. The kick forms an eccentric debris disk which with prograde (blue) and retrograde orbits (orange).
    Dead stars known as white dwarfs, have a mass like the Sun while being similar in size to Earth. They are common in our galaxy, as 97% of stars are white dwarfs. As stars reach the end of their lives, their cores collapse into the dense ball of a white dwarf, making our galaxy seem like an ethereal graveyard.

    Despite their prevalence, the chemical makeup of these stellar remnants has been a conundrum for astronomers for years. The presence of heavy metal elements—like silicon, magnesium, and calcium—on the surface of many of these compact objects is a perplexing discovery that defies our expectations of stellar behavior.
  • Mitchell Begelman
    JILA is thrilled to announce that Dr. Mitch Begelman, a JILA Fellow and esteemed professor in the Department of Astrophysical and Planetary Sciences at the University of Colorado Boulder, has been elected as a member of the National Academy of Sciences. This prestigious honor is bestowed in recognition of his distinguished and ongoing contributions to original research in astrophysics.
  • Peter L. Bender
    Dr. Peter L. Bender, an esteemed experimental physicist and a foundational member of JILA (formerly the Joint Institute for Laboratory Astrophysics) at the University of Colorado Boulder, passed away recently, leaving behind a legacy marked by significant contributions to the fields of geophysics, astrophysics, and precision measurement.

    As a JILA Fellow from 1963 to 1995 and later a Fellow Adjoint, Bender was deeply and actively involved in pioneering research that has shaped our understanding of the universe.
  • Undergraduate research assistant Aaron Barrios
    JILA undergraduate student Aaron Barrios has recently been honored with the prestigious Jacob Van Ek Scholarship, an accolade conferred by the University of Colorado Boulder College of Arts and Sciences to a select group of exceptional undergraduates. This year, Barrios is among 23 distinguished students to receive one of the college's highest honors, reflecting his outstanding contributions and academic excellence in the fields of Physics, Astronomy, and Mathematics.
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