Results 81 to 90 of about 5,254,583 (200)

Comparing image quality of synchrotron and laboratory nano‐CT scans: a round robin study

Journal of Synchrotron Radiation, Volume 33, Issue 2, Page 489-507, March 2026.
A multi‐facility round‐robin comparison of synchrotron‐ and laboratory‐based nano‐computed tomography using a standardized 3D phantom reveals superior resolution and acquisition speed at synchrotrons, while advanced laboratory systems achieve competitive image quality with extended scan times; phase contrast modalities further enhance structural ...
Simon Wittl, Simon Zabler, Jonas Fell, Julie Villanova, Pierre Lhuissier, Stefanie Hildebrandt, Hans-Georg Herrmann   +6 more
wiley   +1 more source

SWAG Water Masers in the Galactic Center

, 2018
The Galactic Center contains large amounts of molecular and ionized gas as well as a plethora of energetic objects. Water masers are an extinction-insensitive probe for star formation and thus ideal for studies of star formation stages in this highly ...
Yusef-Zadeh, F., Ott, J., Meier, D., Ginsburg, A., Krieger, N., Rickert, M., Team, S.   +6 more
core  

Statistical Analysis of Water Masers in Star-Forming Regions: Cepheus A and W75 N [PDF]

, 2010
Publicado en línea el 26 de abril de 2010.We have done a statistical analysis of Very Long Baseline Array (VLBA) data of water masers in the star-forming regions (SFRs) Cepheus A and W75 N, using correlation functions to study the spatial clustering and ...
Cantó, Jorge, Torrelles, José M., Patel, Nimesh A., Anglada Pons, Guillem Josep, Curiel, Salvador, Uscanga, Lucero, Gómez Rivero, José Francisco, Raga, Alejandro Cristian, Anglada, Guillem, Torrelles, José María   +9 more
core   +1 more source

East Asian VLBI Network Astrometry Toward the Star-forming Region G040.96+02.48 in the Extreme Outer Galaxy

The Astronomical Journal
Accurate astrometric measurements for star-forming regions located on the far side of the Milky Way remain scarce. In this work, we present the astrometric results for a 22 GHz water maser associated with star-forming region G040.96+02.48 located on the ...
Xianjin Shen, Zehao Lin, Nobuyuki Sakai, Ye Xu, Shuaibo Bian, Yuanwei Wu, Yan Sun, Dejian Liu, Jingjing Li, Bo Zhang, Shuangjing Xu, Tomoaki Oyama, Chungsik Oh, Wu Jiang, Lang Cui, Pengfei Jiang, Guanghui Li, Mareki Honma, Se-Jin Oh, Zhi-Qiang Shen, Na Wang   +20 more
doaj   +1 more source

Effects of Fruiting Neighborhood, Plant Traits, and Fruit Traits on Frugivore Visitation and Fruit Removal for an Understory Palm

Biotropica, Volume 58, Issue 2, March 2026.
We simultaneously evaluated how the fruiting neighborhood, defined as the number of fruiting palms in a 35 m radius, and relevant traits at the level of individual plants (e.g., height, crop size) and fruits (e.g., fruit and seed size, water, and sucrose content) influenced frugivore visitation and the number of fruits removed per visit in a common ...
Callie Rose Chenevert, Therese Lamperty, Domingo Cabrera, Jordan Karubian   +3 more
wiley   +1 more source

On the Structure of the Sagittarius Spiral Arm in the Inner Milky Way

The Astronomical Journal
We report measurements of trigonometric parallax and proper motion for two 6.7 GHz methanol and two 22 GHz water masers located in the far portion of the Sagittarius spiral arm as part of the BeSSeL Survey.
S. B. Bian, Y. W. Wu, Y. Xu, M. J. Reid, J. J. Li, B. Zhang, K. M. Menten, L. Moscadelli, A. Brunthaler   +8 more
doaj   +1 more source

Infrared variability, maser activity, and accretion of massive young stellar objects [PDF]

, 2017
Methanol and water masers indicate young stellar objects. They often exhibit flares, and a fraction shows periodic activity. Several mechanisms might explain this behavior but the lack of concurrent infrared (IR) data complicates the identification of ...
CARATTI O GARATTI, ALESSIO, Linz, Hendrik, MOSCADELLI, Luca, SANNA, ALBERTO, Linz, H., Garatti, A., Caratti o Garatti, A., Stecklum, Bringfried, Hodapp, K., Hodapp, Klaus, Sanna, A., Stecklum, B., Moscadelli, L.   +12 more
core   +1 more source

Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1

The Astronomical Journal
The high-mass young stellar object G358.93-0.03-MM1 underwent a rapid accretion burst event from 2019 January to June, resulting in flares observed in most class II methanol maser transitions starting in mid-January.
Dan Miao, Xi Chen, Olga S. Bayandina, Andrej M. Sobolev, Wan-jun Li, Koichiro Sugiyama   +5 more
doaj   +1 more source

Variability of water masers in evolved stars on timescales of decades [PDF]

, 2018
For several decades (1987-2015) we have been carrying out observations of water masers in the circumstellar envelopes (CSE's) of Mira variables, Red Supergiants (RSG's) and Semi-Regular Variables (SRV's) with the Medicina 32-m and Effelsberg 100-m ...
Winnberg, Anders, BRAND, JAN, Engels, Dieter   +2 more
core   +1 more source

SiO v = 1 J = 5 → 4 Maser Emission from the Root of the “Water Fountain” Source W 43A

The Astrophysical Journal
We report here the first mapping of SiO v = 1 J  = 5 → 4 maser emission toward the “water fountain” source W 43A in order to explore the central stellar system driving the collimated, bipolar, fast jet.
Hiroshi Imai, Takeshi Hoshino, Daniel Tafoya, José F. Gómez, Jun-ichi Nakashima, Gabor Orosz   +5 more
doaj   +1 more source