Results 11 to 20 of about 419,985 (168)

Probing 3D Magnetic Fields Using Starlight Polarization and Grain Alignment Theory [PDF]

The Astrophysical Journal
Polarization of starlight induced by dust grains aligned with the magnetic field (hereafter B -field) is widely used to measure the 2D B -fields projected onto the plane-of-sky.
Bao Truong, Thiem Hoang
doaj   +5 more sources

Interstellar Polarization Survey. V. Galactic Magnetic Field Tomography of the Spiral Arms Using Optical and Near-infrared Starlight Polarization

The Astronomical Journal
Interstellar linear polarization occurs when starlight passes through elongated dust grains aligned by interstellar magnetic fields. The observed polarization can come from different dust structures along the line of sight (LOS).
Y. Angarita, M. J. F. Versteeg, M. Haverkorn, V. Pelgrims, C. V. Rodrigues, A. M. Magalhães, R. Santos-Lima, Koji S. Kawabata   +7 more
doaj   +2 more sources

A Compilation of Optical Starlight Polarization Catalogs

The Astrophysical Journal Supplement Series
Polarimetry of stars at optical and near-infrared wavelengths is an invaluable tool for tracing interstellar dust and magnetic fields. Recent studies have demonstrated the power of combining stellar polarimetry with distances from the Gaia mission, in ...
G. V. Panopoulou, L. Markopoulioti, F. Bouzelou, M. A. Millar-Blanchaer, S. Tinyanont, D. Blinov, V. Pelgrims, S. Johnson, R. Skalidis, A. Soam   +9 more
doaj   +2 more sources

The Environmental Light Characteristics of Forest Under Different Logging Regimes. [PDF]

Ecol Evol
The environmental light field system excels at measuring fundamental attributes of the whole scene natural light regime in different forest types. ABSTRACT Light is a fundamental attribute and key abiotic driver in forest ecosystems. Although the ecological effects of light itself is well studied, capturing the complex parameters that constitute the ...
Coetzee BWT, van Zyl L.
europepmc   +2 more sources

A Bio-Inspired Navigation Strategy Fused Polarized Skylight and Starlight for Unmanned Aerial Vehicles

IEEE Access, 2020
The migratory animals are capable of traveling long distances by fusing varied information, such as the halteres, the star positions, and the polarization pattern.
Qingyun Zhang, Jian Yang, Xin Liu, Lei Guo   +3 more
doaj   +1 more source

Interstellar Polarization Survey. II. General Interstellar Medium

The Astronomical Journal, 2023
Magnetic fields permeate the entire Galaxy and are essential to, for example, the regulation of several stages of the star formation process and cosmic-ray transportation.
M. J. F. Versteeg, A. M. Magalhães, M. Haverkorn, Y. Angarita, C. V. Rodrigues, R. Santos-Lima, Koji S. Kawabata   +6 more
doaj   +1 more source

The EUV Reflectance of Mercury's Surface Measured by BepiColombo/PHEBUS

Journal of Geophysical Research: Planets, Volume 128, Issue 3, March 2023., 2023
Abstract On 9 and 10 October 2021, Probing the Hermean Exosphere by Ultraviolet Spectroscopy aboard BepiColombo observed the disk‐integrated reflected light from the Sun by Mercury in the spectral range 90–160 nm at a phase angle of 70°. These observations are used to derive the EUV reflectance of the surface of Mercury in this wavelength range for the
J.‐Y. Chaufray, E. Quémerais, D. Koutroumpa, R. Robidel, F. Leblanc, A. Réberac, I. Yoshikawa, K. Yoshioka, G. Murakami, O. Korablev, D. Belyaev, M. G. Pelizzo, A. J. Corso   +12 more
wiley   +1 more source

A Primer on Underwater Quantum Key Distribution

Quantum Engineering, Volume 2023, Issue 1, 2023., 2023
The growing importance of underwater networks (UNs) in mission‐critical activities at sea enforces the need for secure underwater communications (UCs). Classical encryption techniques can be used to achieve secure data exchange in UNs. However, the advent of quantum computing will pose threats to classical cryptography, thus challenging UCs. Currently,
Pietro Paglierani, Amir Hossein Fahim Raouf, Konstantinos Pelekanakis, Roberto Petroccia, João Alves, Murat Uysal, YuBo Sheng   +6 more
wiley   +1 more source

Harmonic generation with multi‐layer dielectric metasurfaces

Nanophotonics, Volume 10, Issue 7, Page 1837-1843, May 2021., 2021
Abstract Metasurfaces have recently gained extensive interest because of their extraordinary optical behavior as artificial material interfaces with ultrahigh compactness. In this framework, dielectric platforms have newly become very promising for nonlinear nanophotonics, providing opportunities, especially for ultrafast optical switching, and high ...
Giuseppe Marino, Davide Rocco, Carlo Gigli, Grégoire Beaudoin, Konstantinos Pantzas, Stéphan Suffit, Pascal Filloux, Isabelle Sagnes, Giuseppe Leo, Costantino De Angelis   +9 more
wiley   +1 more source

Assessing long‐term effects of artificial light at night on insects: what is missing and how to get there

Insect Conservation and Diversity, Volume 14, Issue 2, Page 260-270, March 2021., 2021
The garden tiger moth (Arctia caja) is a species particularly affected by light pollution. Photo credit: Marian Schut We provide an overview of existing studies that have assessed long‐term effects of artificial light at night (ALAN) on insect populations and communities Almost no study to date has combined repeated, multiple samplings per year over ...
Gregor Kalinkat, Maja Grubisic, Andreas Jechow, Roy H. A. van Grunsven, Sibylle Schroer, Franz Hölker   +5 more
wiley   +1 more source