Astrophysics
While it may not look like it, the interstellar space between stars is far from empty. Atoms, ions, molecules, and more reside in this ethereal environment known as the Interstellar Medium (ISM). The ISM has fascinated scientists for decades, as at least 200 unique molecules form in its cold, low-pressure environment. It鈥檚 a subject that ties together the fields of chemistry, physics, and astronomy, as scientists from each field work to determine what types of chemical reactions happen there.
Now, in the recently published cover article of the Journal of Physical Chemistry A, JILA Fellow and University of Colorado Boulder Physics Professor Heather Lewandowski and former JILA graduate student Olivia Krohn highlight their work to mimic ISM conditions by using Coulomb crystals, a cold pseudo-crystalline structure, to watch ions and neutral molecules interact with each other.
Astronomers have long sought to understand the early universe, and thanks to the James Webb Space Telescope (JWST), a critical piece of the puzzle has emerged. The telescope's infrared detecting 鈥渆yes鈥 have spotted an array of small, red dots, identified as some of the earliest galaxies formed in the universe.
This surprising discovery is not just a visual marvel, it's a clue that could unlock the secrets of how galaxies and their enigmatic black holes began their cosmic journey.
In a new paper in The Astrophysical Journal, JILA Fellow Jason Dexter, graduate student Kirk Long, and other collaborators compared two main theoretical models for emission data for a specific quasar, 3C 273. Using these theoretical models, astrophysicists like Dexter can better understand how these quasars form and change over time.
Colorado 9News recently interviewed JILA Fellow and University of Colorado Boulder physics professor Heather Lewandowski as she discussed a recent paper with over 1,000 authors. This recent paper, published in the聽Astrophysical Journal,聽focused on solving the mystery of the Sun's corona, a ring of significantly hotter temperatures surrounding the Sun compared to its core. Lewandowski recruited over 1,000 undergraduate students as researchers to study this phenomenon as they analyzed data from observations of the corona. The entire project took multiple years and culminated in over 56,000 hours of research.聽In the 9News interview, Lewandowski stated: "It's really important for us to understand our Sun because it has a large impact on Earth."
It is with heavy hearts that the JILA and NIST communities mourn the loss of renowned physicist Lewis Branscomb, who passed away on May 31, 2023, leaving behind an indelible legacy in the world of science and a profound impact on JILA. Branscomb, a brilliant mind and a cherished member of JILA will forever be remembered for his groundbreaking contributions to the field of physics and his unwavering commitment to advancing scientific knowledge. His dedication to founding JILA and serving as its first Fellow Chair will remain forever in JILA鈥檚 collective memory. His insatiable curiosity and intellectual prowess paved the way for a remarkable career that spanned over six decades.
The JILA and NIST communities are recently saddened by the passing of physicist James 鈥淛im鈥 E. Faller. Faller was a visionary whose scientific contributions have contributed to our understanding of the universe. Faller鈥檚 work as a JILA Fellow spanned over 50 years (since 1972), and he remained actively engaged in the scientific research process, serving as NIST QPD Division Chief for a time. With heavy hearts, we bid farewell to a brilliant mind, a passionate explorer, and a respected member of the scientific community.
JILA Fellow and University of Colorado physics professor Heather Lewandowski helped lead a group of more than 1,000 undergraduate students in a study looking at the temperatures of the Sun's corona. The corona, the outer layer, gets incredibly hot, and the study hoped to figure out why. Their research was featured in Popular Science Magazine,聽revealing the creativity and ingenuity of undergraduate students in scientific research.
Before graduating, JILA graduate student Connor Bice recently received the 2023 Richard Nelson Thomas Award. This annual award is given to the most outstanding graduate student in astrophysics at the University of Colorado Boulder in honor of Dr. Richard Nelson Thomas. Dr. Thomas was one of the founding members of JILA and an influential scientist in astrophysics.
For a new study, a team of physicists recruited roughly 1,000 undergraduate students at 蜜桃传媒破解版下载 to help answer one of the most enduring questions about the sun: How does the star鈥檚 outermost atmosphere, or 鈥渃orona,鈥 get so hot?
The research represents a nearly-unprecedented feat of data analysis: From 2020 to 2022, the small army of mostly first- and second-year students examined the physics of more than 600 real solar flares鈥攇igantic eruptions of energy from the sun鈥檚 roiling corona.
The researchers, partially lead by JILA fellow Heather Lewandowski, and including 995 undergraduate and graduate students,聽published their finding May 9 in The Astrophysical Journal. The results suggest that solar flares may not be responsible for superheating the sun鈥檚 corona, as a popular theory in astrophysics suggests.
For decades, black holes have fascinated scientists and nonscientists alike. Their ominous voids, like an open pair of jaws, has inspired a whole wave of science-fiction featuring the phenomenon. Physicists have also been similarly inspired, specifically to understand the dynamics of what is happening inside of the black hole, especially for objects that may fall in.