Dr. Carolyn Kierans, a renowned astrophysicist at NASA's Goddard Space Flight Center, is set to deliver a plenary lecture at the 248th meeting of the American Astronomical Society. Her talk, titled 'The MeV Gap: Unveiling the Mysteries of Antimatter', will delve into the intriguing world of antimatter and its elusive nature. In this article, we explore her journey, her groundbreaking research, and her insights into the challenges and rewards of pursuing a career in astronomy and astrophysics.
A Journey into Antimatter
Dr. Kierans' fascination with antimatter began during her undergraduate studies, where she discovered the unexpected presence of antimatter within everyday objects, such as bananas. This led her to explore the broader implications of antimatter in the universe, particularly the enigmatic 511 keV glow observed in the center of our galaxy. This glow, attributed to the annihilation of positrons and electrons, remains unexplained due to the lack of known sources in our galaxy.
Her research focuses on the 'MeV gap', a region of medium-energy gamma rays that is notoriously difficult to study. Despite its importance in understanding some of the universe's most energetic processes, from exploding stars to black hole environments, the gap remains largely unexplored. Dr. Kierans' work aims to bridge this gap by developing innovative instruments and missions, such as ComPair, which she leads as Principal Investigator.
A Passion for Instrument Building
Dr. Kierans' interest in astronomy and astrophysics was sparked during her summer co-op placement at TRIUMF, Canada's national particle physics laboratory. She discovered a passion for building and testing instruments, which led her to pursue a master's in quantum optics and eventually a PhD in gamma-ray astronomy at UC Berkeley. Her PhD research involved flying a detector into space on a giant balloon, capturing the galaxy's 511 keV antimatter glow for the first time.
This success paved the way for the development of COSI, a NASA satellite scheduled for launch in 2027. Dr. Kierans is now working on the data pipeline for COSI, ensuring the successful processing and analysis of the satellite's data.
Mentorship and the Importance of Instrument Building
Dr. Kierans emphasizes the importance of mentorship, especially for young women in STEM. Her own journey was influenced by a female mentor who had a PhD in physics and encouraged her to pursue her dreams. This mentorship played a pivotal role in her decision to attend graduate school, despite initial doubts and challenges.
She also highlights the often-overlooked aspect of instrument building and development. Behind every great observatory are years of hard work by graduate students and postdocs who soldered, calibrated, and coaxed the hardware into working. These individuals often become the leaders of future missions, and Dr. Kierans' talk aims to pay tribute to their contributions.
The Future of Astronomy: A Call to Action
Dr. Kierans' plenary lecture serves as a call to action for aspiring astronomers and astrophysicists, particularly young women. She encourages them to find mentors who look like them and emphasizes the importance of hard work and perseverance. Her talk will also showcase the next generation of instrument-builders and pipeline-writers, who are currently undergraduates, and may be reading this article.
In conclusion, Dr. Kierans' research and mentorship exemplify the power of curiosity, perseverance, and collaboration in advancing our understanding of the universe. Her work in the MeV gap and her commitment to inspiring the next generation of scientists make her a true pioneer in her field.
