Results 131 to 140 of about 593,852 (287)

How Does a Low Surface Brightness Galaxy Form Spiral Arms?

The Astrophysical Journal
The formation and evolution of spiral arms in low surface brightness galaxies (LSBs) are not well understood. We study the dynamics of spiral arms in two prototypical LSBs, FGC 568-VI and FGC 568-01, using both analytical models and N -body ...
Ganesh Narayanan, Anagha A. G., Arunima Banerjee   +2 more
doaj   +1 more source

Geometry‐Encoded Actuation as a Structural Interaction Layer in Origami Robots

Advanced Science, EarlyView.
We present geometry‐encoded actuation (GEA), a design framework that integrates multistable origami with liquid crystal elastomer actuators to encode environmental interactions into autonomous structural responses. GEA enables programmable shape transformation without continuous sensing or complex control, achieving robust adaptive manipulation and ...
Jianshu Zhou, Yitong Li, Junda Huang, Ian Zhang, Haoran Liu, Boyuan Liang, Yiyuan Zhang, Xiaohui Xiao, Qiguang He   +8 more
wiley   +1 more source

Dynamically Driven Evolution of Molecular Gas in the Barred Spiral Galaxy M83 Traced by CO J = 2–1/1–0 Line Ratio Variations

The Astrophysical Journal
We show the variations of the CO J = 2–1/1–0 line ratio ( R _21/10 ) across the barred spiral galaxy M83, using the 46 pc resolution data from the Atacama Large Millimeter/submillimeter Array. The R _21/10 map clearly evidences the systematic large-scale
Jin Koda, Fumi Egusa, Akihiko Hirota, Amanda M Lee, Tsuyoshi Sawada, Fumiya Maeda   +5 more
doaj   +1 more source

With arms wide open: A VLT/MUSE view of the mechanisms driving unwinding spiral arms in cluster galaxies

Astronomy & Astrophysics
Context. The environmental mechanisms driving unwinding spiral arms in cluster galaxies remain debated. While earlier studies attributed this phenomenon primarily to gravitational interactions, more recent works suggest that ram-pressure stripping (RPS ...
Lassen Augusto E., Vulcani Benedetta, Fritz Jacopo, Poggianti Bianca M., Marasco Antonino, Jaffé Yara, Gullieuszik Marco, Moretti Alessia, Radovich Mario, Smith Rory, Tonnesen Stephanie, Tomičić Neven, George Koshy, Ignesti Alessandro, Matijević Luka, Giunchi Eric   +15 more
doaj   +1 more source

Spiral Arms [PDF]

Monthly Notices of the Royal Astronomical Society, 1967
openaire   +1 more source

RSF1‐Dependent PAR Turnover Promotes 53BP1 Liquid Condensate Formation at DNA Damage Sites

Advanced Science, EarlyView.
At sites of DNA damage, RSF1 recruits PARG to accelerate PAR turnover, triggering a switch from PAR‐driven condensates to 53BP1 condensates. This condensate transition enables p53‐dependent gene transcription and coordinates the DNA damage response.
Yungyeong Heo, Yonghyeon Kim, Nangyeong Hwang, Gwanho Sung, Sujin Jo, Yeonhu Lee, Ho‐Chul Kang, Jae‐Ho Lee, Yong Won Choi, Hyeseong Cho, Sunwoo Min   +10 more
wiley   +1 more source

Magnetic and gaseous spiral arms in M83

Context. The magnetic field configurations in several nearby spiral galaxies contain magnetic arms that are sometimes located between the material arms.
Beck R, Shukurov A, Sokoloff D, Ehle M, Frick P, Stepanov R, Lundgren A   +6 more
core   +3 more sources

Multiband ALMA Polarization Observations of BHB 07-11 Reveal Aligned Dust Grains in Complex Spiral Arm Structures

The Astrophysical Journal
Polarization-mode observations from the Atacama Large Millimeter/submillimeter Array (ALMA) are powerful tools for studying the dust grain populations in circumstellar disks.
Austen Fourkas, Leslie W. Looney, Zhe-Yu Daniel Lin, Martin Radecki, Zhi-Yun Li, John J. Tobin, Ian W. Stephens, Manuel Fernández-López, Haifeng Yang, Woojin Kwon, Rachel Harrison   +10 more
doaj   +1 more source

Switching Spike Plasticity Shapes ACE2 Engagement Across SARS‐CoV‐2 Variants

Advanced Science, EarlyView.
Conformational plasticity governs SARS‐CoV‐2 spike function and ACE2 recognition. Using high‐speed AFM and single‐molecule force spectroscopy, we analyzed the ancestral spike and nine variants, revealing progressive rigidification from Delta, variable plasticity in Omicron sublineages, and JN.1 compaction.
Sarah Stainer, Rong Zhu, Manuel Reithofer, Gerhard Stadlmayr, Katharina Stadlbauer, Panchika Prangkio, Christoph Rippel, Markus Hahn, Aniko Eva Kasztner, Stefanie Stohl, Petr Bednar, Daniel Ruzek, David Glück, Robert Tampé, Gordana Wozniak‐Knopp, Yoo Jin Oh, Miriam Klausberger, Peter Hinterdorfer   +17 more
wiley   +1 more source

Measurement of Cosmic-Ray Density in the Spiral Arms toward Galactic Anticenter

The Astrophysical Journal
Using nearly 17 yr of Fermi-LAT data, we analyzed the diffuse γ -ray emission associated with different spiral arms of the Milky Way in the ranges l  = 105 ^∘ –145 ^∘ and b  = −5 ^∘ to 5 ^∘ .
Jia-hao Liu, Bing Liu, Rui-zhi Yang
doaj   +1 more source