Results 61 to 70 of about 468,326 (252)

Optical Color of Type Ib and Ic Supernovae and Implications for Their Progenitors

The Astrophysical Journal, 2023
Type Ib and Ic supernovae (SNe Ib/Ic) originate from hydrogen-deficient massive star progenitors, of which the exact properties are still much debated.
Harim Jin, Sung-Chul Yoon, Sergei Blinnikov   +2 more
doaj   +1 more source

Thermodynamics and Self-Gravitating Systems [PDF]

, 2002
This work assembles some basic theoretical elements on thermal equilibrium, stability conditions, and fluctuation theory in self-gravitating systems illustrated with a few examples. Thermodynamics deals with states that have settled down after sufficient
Katz, Joseph
core   +2 more sources

Exploring Short-GRB afterglow parameter space for observations in coincidence with gravitational waves

, 2018
Short duration Gamma Ray Bursts(SGRB) and their afterglows are among the most promising electro-magnetic (EM) counterparts of Neutron Star (NS) mergers.
Arun, K. G., Misra, Kuntal, Pai, Archana, Resmi, L., Saleem, M.   +4 more
core   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Magnetically Actuated Drops‐on‐Stilts Microrobots for Transport and Delivery of Hydrophobic Cargo

Advanced Materials Interfaces, EarlyView.
Iron oxide nanoparticles and oil droplets in external magnetic fields form “drops‐on‐stilts” microrobots that transport hydrophobic cargo. Tunable nanoparticle–droplet interactions generate stilt‐like structures. Field rotation enables walking, obstacle navigation, and collective motion.
Oluwafemi Ligan, Hrishabh Singh, Sahil Kulkarni, Hong Huy Tran, James M. Kikkawa, Daeyeon Lee, Ravi Radhakrishnan, Edward Steager, Hyun Koo, Kathleen Stebe   +9 more
wiley   +1 more source

MOSEL Survey: Spatially Offset Lyman-continuum Emission in a New Emitter at z = 3.088 Can Explain the Low Number Density of Observed LyC Leakers

The Astrophysical Journal
We present the discovery of a unique Lyman-continuum (LyC) emitter at z = 3.088. The LyC emission was detected using the Hubble Space Telescope WFC3/UVIS F336W filter, covering a rest-frame wavelength range of 760–900 Å. The peak signal-to-noise ratio of
Anshu Gupta, Cathryn M. Trott, Ravi Jaiswar, E. V. Ryan-Weber, Andrew J. Bunker, Ayan Acharyya, Alex J. Cameron, Ben Forrest, Glenn G. Kacprzak, Themiya Nanayakkara, Kim-Vy Tran, Aman Chokshi   +11 more
doaj   +1 more source

The GALAH survey: Searching for and characterizing halo substructures with the GALAH DR4 survey

Astronomy & Astrophysics
Context. Recent studies have revealed that the Milky Way’s stellar halo is a composite of stellar populations of different origins, including multiple accretion events.
Kushniruk Iryna, Youakim Kristopher, Lind Karin, Buder Sven, Kos Janes, Feuillet Diane, Martell Sarah L., de Grijs Richard, Lewis Geraint F., Bland-Hawthorn Joss, Da Costa Gary, Hayden Michael, Zucker Daniel, Zwitter Tomaz, Sharma Sanjib   +14 more
doaj   +1 more source

Layered Nanoporous Platforms for SERS Sensing

Advanced Materials Interfaces, EarlyView.
Here, we present a detailed investigation of the SERS performance of layered nanoporous metals. The controlled deposition of well‐defined, stacked porous layers enabled a systematic analysis of the effects of multimetallic systems in SERS experiments. Numerical models are also used to support the experimental findings.
Yanqiu Zou, Anastasiia Sapunova, Tommaso Giovannini, Chen Wang, Huaizhou Jin, Vincenzo Caligiuri, Sergio Marras, Andrea Schirato, Luca Bursi, Alessandro Alabastri, Shukun Weng, Ali Douaki, German Lanzavecchia, Ivan Marri, Roman Krahne, Nicolò Maccaferri, Zhenrong Zheng, Shangzhong Jin, Denis Garoli   +18 more
wiley   +1 more source

Spatially Resolved Galactic Winds at Cosmic Noon: Outflow Kinematics and Mass Loading in a Lensed Star-forming Galaxy at z = 1.87

The Astrophysical Journal
We study the spatially resolved outflow properties of CSWA13, an intermediate-mass ( M _*  = 10 ^9 M _⊙ ), gravitationally lensed star-forming galaxy at z = 1.87.
Keerthi Vasan G. C., Tucker Jones, Anowar J. Shajib, Sunny Rhoades, Yuguang Chen, Ryan L. Sanders, Daniel P. Stark, Richard S. Ellis, Nicha Leethochawalit, Glenn G. Kacprzak, Tania M. Barone, Karl Glazebrook, Kim-Vy H. Tran, Hannah Skobe, Kris Mortensen, Ivana Barisic   +15 more
doaj   +1 more source

HISTORY OF STEREOLOGY

Image Analysis and Stereology, 2017
Nowadays it is difficult to list all disciplines where stereology is applied, starting from biology and medicine, through materials science, geology and agriculture, up to military systems, biometry, meteorology, geography, physics, astronomy ...
Aneta Gądek-Moszczak
doaj   +1 more source