Noémie  Globus

At COLIBRÍ.

​

​​​​​​​​To advance our understanding of high-energy astrophysical phenomena, I actively participate in several international collaborations that tightly integrate theoretical and observational approaches:

​​​​

I am a co-investigator in the Simons Collaboration on Extreme Electrodynamics of Compact Sources (SCEECS), an international effort, directed by Roger Blandford, dedicated to understanding how matter, radiation, and electromagnetic fields behave under the most extreme conditions in the universe, particularly around black holes and neutron stars. My goal is to elucidate the physics of the central engines of relativistic jets across a broad range of astrophysical environments, including AGNs, GRBs, and TDEs. In collaboration with Roger Blandford, I focus on developing a theoretical framework that emphasizes the role of interchange instabilities and electric zones in black hole magnetospheres, which allows energy to be transported across magnetic field lines rather than predominantly along them (Blandford & Globus, 2022). This approach naturally explains how disk winds may be energized and how energy can be efficiently transported from sub-parsec to kiloparsec scales, addressing a major challenge in jet theory.

​​​​​​​

I am also a member of the Telescope Array Collaboration, the largest cosmic-ray observatory in the Northern Hemisphere. The Telescope Array is designed to detect ultra-high-energy cosmic rays—charged particles, such as protons or atomic nuclei with energies exceeding a Joule, far beyond those achievable in terrestrial particle accelerators. Their sources remain unknown: classical astronomy with cosmic rays has long been hindered by the strong deflections experienced by charged nuclei as they traverse the largely unknown intergalactic and Galactic magnetic fields. This limitation was highlighted by the recent detection of the Amaterasu particle—the second highest-energy cosmic ray ever observed—which could not be traced back to its source due to our poor knowledge of the intervening magnetic fields. I am developing innovative approaches to ultra-high energy cosmic-ray astronomy, by analyzing the time structure of cosmic-ray arrivals, to distinguish between continuous and transient sources. I recently completed an Annual Review of Astronomy and Astrophysics on these remarkable particles.​​​​​​

​​

In January 2025, I became an official member of the COLIBRÍ telescope collaboration. COLIBRÍ is a robotic, wide-field optical telescope located at the San Pedro Mártir National Astronomical Observatory (OAN–SPM) in Baja California, Mexico. I am the Principal Investigator of TEQUILA (Transient Events Q, U, and I Light Analyzer), an imaging polarimeter for COLIBRÍ, currently being developed with Alan Watson (co-I). This rapid-response capability enables polarimetric observations of gamma-ray burst afterglows and other optical transients within one minute of an alert, providing direct probes of GRB jet early magnetic fields. TEQUILA will also investigate magnetic activity in relativistic jets more broadly, particularly those associated with high-energy neutrino events from IceCube, for which I serve as a science program convener within COLIBRÍ. 

​​​​​​

I have recently joined the Polarisation Sky Survey of the Universe’s Magnetism (POSSUM), a large-scale radio astronomy survey aimed at mapping magnetic fields throughout the Universe. My research interests focus on investigating the turbulent magnetic structure of supernova remnant shells in order to better constrain the physics of diffusive shock acceleration, one of the leading mechanisms responsible for cosmic-ray acceleration. This work aims to establish a strong link between observations and the theory to advance our understanding of cosmic-ray transport in magnetohydrodynamic turbulence.

​​​

​

​​​