Results 31 to 40 of about 536 (173)

Interactions of Sublimated Frost With Volcanic Plumes: Modeling Io's SO2 Atmosphere Using the DSMC Method

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Io's tenuous atmosphere consists primarily of sulfur dioxide (SO2 ${\text{SO}}_{2}$) with observed column densities of approximately 1016−1017 $1{0}^{16}-1{0}^{17}$ cm−2 ${\text{cm}}^{-2}$. However, it remains uncertain whether the sublimation of SO2 ${\text{SO}}_{2}$ surface frost or volcanic outgassing is the primary source of the SO2 ...
Leander Schlarmann, Audrey Vorburger, Tim Mosimann, Nicolas Thomas, Peter Wurz   +4 more
wiley   +1 more source

Structured light illumination for order sorting in Echelle spectrometers

Optics Express, 2017
نبلغ عن تشغيل مطياف الدرجة تحت إضاءة ضوئية منظمة. يتم ترميز كل ترتيب حيود لمقياس الطيف ببنية دورية معينة تسمح بفرز الترتيب عن طريق التحليل العددي بعد الكشف. على النقيض من مقاييس طيف الدرجة المتقاطعة، تتداخل الطلبات في هذا النهج عند مستوى الكشف بحيث يمكن إجراء المعايرة الطيفية بسهولة بطول موجي مرجعي واحد.
Óscar Martínez-Matos, Pablo Vaveliuk, Carolina Rickenstorff-Parrao   +2 more
openaire   +3 more sources

Nanoscale Ordering of Magnetosomes Under the Influence of a Magnetic Field Investigated by Small‐Angle X‐Ray Scattering

Small Structures, Volume 7, Issue 6, June 2026.
Recently, the synthetic Rhodospirillum rubrum ‘magneticum’ has been shown to enable the light‐driven production of magnetosomes (MAGs) in high yields. These membrane‐enveloped magnetic nanoparticles represent promising alternatives to their chemically synthesized analogs for many applications in the biotechnological and biomedical field.
Dieter Skroblin, Sabine Rosenfeldt, Simon Markert, Jakob J. Beierl, Dirk Schüler, Anna S. Schenk, Frank Mickoleit, Christian Gollwitzer   +7 more
wiley   +1 more source

THE OPTICAL HIGH-RESOLUTION SPECTROSCOPY AS A METHOD OF X-RAY BINARY CYG X-1 INVESTIGATION

Odessa Astronomical Publications, 2017
Recently a lot of photometric effects were revealed during the investigation of the first can- didate to black hole Cyg X-1. Besides of orbital vari- ations different kinds of flares, so-called precession period 147/294 days and a significant correlation
E. A. Karitskaya, A. V. Bondar, N. G. Bochkarev, G. A. Galazutdinov, F. A. Musaev, A. A. Sapar   +5 more
doaj   +1 more source

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

The Canadian Journal of Chemical Engineering, Volume 104, Issue 5, Page 2206-2224, May 2026.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa, Jildimara de Jesus Santana, Viviane de Oliveira Campos, Felipe Fernandes Barbosa, Gregory S. Patience   +4 more
wiley   +1 more source

The Kepler Giant Planet Search. I. A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory

The Astrophysical Journal Supplement Series, 2023
Despite the importance of Jupiter and Saturn to Earth’s formation and habitability, there has not yet been a comprehensive observational study of how giant exoplanets correlate with the architectural properties of close-in, sub-Neptune-sized exoplanets ...
Lauren M. Weiss, Howard Isaacson, Andrew W. Howard, Benjamin J. Fulton, Erik A. Petigura, Daniel Fabrycky, Daniel Jontof-Hutter, Jason H. Steffen, Hilke E. Schlichting, Jason T. Wright, Corey Beard, Casey L. Brinkman, Ashley Chontos, Steven Giacalone, Michelle L. Hill, Molly R. Kosiarek, Mason G. MacDougall, Teo Močnik, Alex S. Polanski, Emma V. Turtelboom, Dakotah Tyler, Judah Van Zandt   +21 more
doaj   +1 more source

Long‐Term Variations of Jupiter's Stratospheric Planetary Waves Modulated by the Quasi‐Quadrennial Oscillation

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Planetary wave activity on Jupiter has been consistently observed since the Voyager mission. This study uses NASA Infrared Telescope Facility 7.6–7.9 μm long‐term ground‐based observations from 1984 to 2011 and global maps from the Cassini flyby in November and December 2000 to analyze Jupiter's stratospheric planetary wave activity.
Jialin Zhang, Dexin Lai, Tao Li, Chengyun Yang, Xin Fang, Yihuang Tang, Yuming Wang   +6 more
wiley   +1 more source

Optical System Design of an Echelle Spectrometer Based on a Digital Micromirror Device

Optics
The echelle spectrometer utilizes an echelle grating as the primary dispersive element, combined with a prism or planar grating for cross-dispersion, to form a two-dimensional spectral image on an area-array Charge-Coupled Device (CCD).
Jia Liu, Ruikai Zhang, Yangdong Zhou, Dewu Li, Yixin Wang, Lu Yin   +5 more
doaj   +1 more source

The Great Cold Spot in Jupiter's upper atmosphere

Geophysical Research Letters, 2017
Past observations and modeling of Jupiter's thermosphere have, due to their limited resolution, suggested that heat generated by the aurora near the poles results in a smooth thermal gradient away from these aurorae, indicating a quiescent and diffuse ...
Tom S. Stallard, Henrik Melin, Steve Miller, Luke Moore, James O'Donoghue, John E. P. Connerney, Takehiko Satoh, Robert A. West, Jeffrey P. Thayer, Vicki W. Hsu, Rosie E. Johnson   +10 more
doaj   +1 more source

New Climatology of Martian Water Vapor Column Abundance Derived From NOMAD LNO Nadir Observations Over Martian Years 34–38

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract We present a new climatology of Martian water vapor column abundance derived from nadir dayside observations made by the Nadir and Occultation for MArs Discovery (NOMAD) instrument suite as part of the ExoMars Trace Gas Orbiter (TGO) mission. H2O vertical column densities are retrieved by applying an Optimal Estimation inversion scheme to the ...
F. Hendrick, S. Robert, I. Thomas, S. Aoki, F. Daerden, L. Trompet, L. Neary, J. Erwin, Y. Willame, A. Piccialli, Z. Flimon, B. Ristic, M. R. Patel, G. Bellucci, M. A. López‐Valverde, M. D. Smith, A. C. Vandaele   +16 more
wiley   +1 more source