Results 101 to 110 of about 36,135 (283)

NIR/VIS Dual‐Comb Spectroscopy Comparing High and Low Repetition Rate Regimes

Laser &Photonics Reviews, EarlyView.
This work compares dual‐comb spectroscopy at lower and higher repetition rates, emphasizing the inherent trade‐off between spectral and temporal resolution. The 80 MHz system provides high‐resolution spectra suitable for analyzing complex molecular structures, whereas the free‐running 1 GHz platform enables fast measurements for real‐time trace gas ...
Alexander Eber, Mithun Pal, Lukas Fürst, Emily Hruska, Christoph Gruber, Marcus Ossiander, Birgitta Bernhardt   +6 more
wiley   +1 more source

Outer Solar System Spacecraft to Probe the μHz Gravitational-wave Frontier

The Astrophysical Journal
The microhertz frequency band of gravitational waves probes the merger of supermassive black holes, as well as many other gravitational-wave phenomena. However, space-interferometry methods that use test masses would require further development of test ...
Matthew McQuinn, Casey McGrath
doaj   +1 more source

Planetary Radio Interferometry and Doppler Experiment (PRIDE) of the JUICE mission

, 2023
Leonid Gurvits, Giuseppe Cimò, Dominic Dirkx, Vidhya Pallichadath, Alex Akins, N. Altobelli, Tatiana Bocanegra-Bahamón, Stephanie M. Cazaux, P. Charlot, Dmitry A. Duev, Marie Fayolle, Judit Fogasy, S. Frey, V. Lainey, Guifre Molera Calvés, Krisztina Perger, S. V. Pogrebenko, N. M. M. Said, C. Vallat, Bert Vermeersen, Pieter Visser, Kuo-Nung Wang, Konrad Willner   +22 more
openalex   +1 more source

Aliasing from Galactic Plane Setting in Widefield Radio Interferometry [PDF]

, 2023
N. Barry, J. Line, C. Lynch, Michael A. Kriele, J. H. Cook   +4 more
openalex   +1 more source

Blinking Optical Tweezers for Atom Rearrangements

Advanced Quantum Technologies, EarlyView.
The work introduces an energy‐efficient method for holding and rearranging an N ×$\times$ M array of atoms using only N optical tweezers, using just 1M of the optical power per atom. In the proof‐of‐concept experiments, single blinking tweezer holds M = 9 atoms and further facilitates rearrangement M = 4 ∼$\sim$ 5 atoms in various configurations ...
Kangjin Kim, Kangheun Kim, Jaewook Ahn
wiley   +1 more source

Kalman filter for radio source power and direction of arrival estimation

EURASIP Journal on Advances in Signal Processing
Images are an important source of information for spacecraft navigation. Based on an image and a known attitude, triangulation techniques (intersection or resection) are often used for positioning and navigation.
Cyril Cano, Nawel Arab, Éric Chaumette, Pascal Larzabal, Mohammed Nabil El Korso, Isabelle Vin   +5 more
doaj   +1 more source

Precision surveying using very long baseline interferometry [PDF]

Radio interferometry measurements were used to measure the vector baselines between large microwave radio antennas. A 1.24 km baseline in Massachusetts between the 36 meter Haystack Observatory antenna and the 18 meter Westford antenna of Lincoln ...
Clark, T. A., Coates, R., Corey, B. E., Counselman, C. C., Hinteregger, H. F., Ma, C., Robertson, D. S., Ryan, J. W., Shapiro, I. I., Wittels, J. J.   +9 more
core   +1 more source

Ultrabroadband Spacetime Nanoscopy of Terahertz Polaritons in a van der Waals Cavity

Small, EarlyView.
This work introduces SYnchrotron SpaceTimE Mapping (SYSTEM), which captures real‐time evolution of polariton wave packets with ∼10 nm spatial and sub‐100 fs temporal resolution across an ultrabroadband 5 to 50 THz range. Here, SYSTEM directly visualizes the creation, interference, and decay of multiple high‐quality Fabry‐Pérot phonon polariton cavity ...
Lukas Wehmeier, Suheng Xu, Xinzhong Chen, Shang‐Jie Yu, Yuchen Lin, Zhenbing Dai, Heng Wang, Helen Yao, Jenny Hu, Christopher C. Homes, Eli Janzen, James H. Edgar, Xiaolin Zheng, Tony F. Heinz, Jonathan A. Fan, D.N. Basov, G.L. Carr, Mengkun Liu   +17 more
wiley   +1 more source

VaDAR: Varstrometry for Dual AGN Using Radio Interferometry

The Astrophysical Journal
Binary and dual active galactic nuclei (AGNs) are an important observational tool for studying the formation and dynamical evolution of galaxies and supermassive black holes.
Emma Schwartzman, Tracy E. Clarke, Kristina Nyland, Nathan J. Secrest, Ryan W. Pfeifle, Henrique Schmitt, Shobita Satyapal, Barry Rothberg   +7 more
doaj   +1 more source

Demonstration of a family of X‐ray dark‐field retrieval approaches on a common set of samples

Journal of Synchrotron Radiation, EarlyView.
This study aims to guide users of dark‐field imaging in selecting the most suitable technique for their imaging goals. To this end, we provide a summary table and highlight opportunities for future research into the sources of dark‐field contrast across emerging methods.There are various imaging setups capable of capturing dark‐field images, each with ...
Samantha J. Alloo, Ying Ying How, Jannis N. Ahlers, David M. Paganin, Michelle K. Croughan, Kaye S. Morgan   +5 more
wiley   +1 more source