Observatoire de la Côte d’Azur

Earliest simultaneous multi-color optical observations of GRB 230328B: from 41 seconds to the host-galaxy identification

Abstract We present a multiwavelength study of the long-duration gamma-ray burst GRB 230328B, combining prompt γ-ray observations with exceptionally early simultaneous optical photometry and extensive X-ray, radio, and host-galaxy follow-up. NUTTELA-TAO began simultaneous g′r′i′...

Dynamical Controlof Non-Hermitian Coupling betweenSubthreshold Nanolasers Enables Q-Switched Pulse Generation

Abstract Non-Hermitian photonics provides a framework to engineer the gain and loss of optical modes in open systems, enabling the control of their spectral and dynamical properties. In particular, the ability to dynamically tune modal losses offers a route to implement functiona...

STARSFLUX: an all-sky catalogue of absolute spectro-photometric calibrators from 0.3 to 30 μ m

Abstract Obtaining accurate fluxes of faint sources from the ground in near- and mid-infrared wavelengths is challenging because of the rapidly changing atmospheric absorption. A common limitation is the lack of a nearby spectro-photometric calibrator. We present the STellar Abso...