Results 71 to 80 of about 178,075 (291)

The Whole is Greater than the Sum of the Parts: Optimizing the Joint Science Return from LSST, Euclid and WFIRST [PDF]

, 2015
The focus of this report is on the opportunities enabled by the combination of LSST, Euclid and WFIRST, the optical surveys that will be an essential part of the next decade's astronomy.
Bean, R., Connolly, A., Dell'antonio, I., Frieman, J., Gawiser, E., Gehrels, N., Gladney, L., Heitmann, K., Helou, G., Hirata, C., Ho, S., Ivezić, Ž., Jain, B., Jarvis, M., Kahn, S., Kalirai, J., Kim, A., Lupton, R., Mandelbaum, R., Marshall, P., Newman, J. A., Perlmutter, S., Postman, M., Rhodes, J., Spergel, D., Strauss, M. A., Tyson, J. A., Walkowicz, L., Wood-Vasey, W. M.   +28 more
core   +1 more source

Unveiling the Progenitors of GRBs through Observations of their Host Galaxies

, 2002
I discuss the possibility of differentiating between popular models for gamma-ray bursts by using multiwavelength observations to constrain the characteristics of their host galaxies, in particular the age of the stellar populations.Comment: 3 pages ...
Chary, Ranga-Ram
core   +2 more sources

Wet Ball Milling Synthesis of Iron Oxide Nanoparticles for High‐Efficiency, Controllable Magnetic Hyperthermia in Ovarian Cancer

Advanced Materials Technologies, EarlyView.
A wet ball‐milling method is presented to synthesize iron magnetic nanoparticles and evaluate their magnetic hyperthermia performance. Optimized particles (∼270 nm, Ms ∼114 emu/g) achieve ∼50°C heating under clinically safe alternating magnetic fields, while pulsed‐field operation enables controlled temperature regulation (∼30°C).
Shahriar Mostufa, Bahareh Rezaei, Md Shahriar, Karla Mercedes Paz González, Anil Kumar, Changxue Xu, Yun Suk Eo, Ioannis H. Karampelas, Jenifer Gómez‐Pastora, Rui He, Kai Wu   +10 more
wiley   +1 more source

Design and development of a learning progression about stellar structure and evolution

Physical Review Physics Education Research, 2018
[This paper is part of the Focused Collection on Astronomy Education Research.] In this paper we discuss the design and development of a learning progression (LP) to describe and interpret students’ understanding about stellar structure and evolution ...
Arturo Colantonio, Silvia Galano, Silvio Leccia, Emanuella Puddu, Italo Testa   +4 more
doaj   +1 more source

A General Overview for Localizing Short Gamma-Ray Bursts with a CubeSat Mega-Constellation

Frontiers in Astronomy and Space Sciences, 2020
The gamma-ray burst monitor (GBM) on the Fermi Gamma-Ray Space Telescope, for the first time, detected a short gamma ray burst (SGRB) signal that accompanies a gravitational wave signal GW170817 in 2017.
Fadil Inceoglu, Fadil Inceoglu, Fadil Inceoglu, Néstor J. Hernández Marcano, Rune H. Jacobsen, Christoffer Karoff   +5 more
doaj   +1 more source

Higher depletion of lithium in planet host stars: no age and mass effect

, 2010
Recent observational work by Israelian et al. has shown that sun-like planet host stars in the temperature range 5700K < Teff < 5850K have lithium abundances that are significantly lower than those observed for "single" field stars. In this letter we use
Castro, Charbonnel, Chen, Chen, Claret, Cochran, Deliyannis, Dziembowski, Ecuvillon, Eggleton, Favata, Fernandes, Fischer, G. Israelian, Galeev, Garcia Lopez, Gilli, Gonzalez, Gonzalez, Israelian, Israelian, Israelian, J. Fernandes, King, Lambert, Lastennet, Luck, Mayor, Mordasini, Morel, N. C. Santos, Neves, Pasquini, Pinsonneault, Pollack, Randich, Randich, Ryan, S. G. Sousa, Santos, Santos, Santos, Santos, Sestito, Sousa, Takeda, Takeda, Udry, Valenti   +48 more
core   +1 more source

Flexible and High‐Performance Perovskite‐Polymer Composites for Dual X‐Ray and Proton Direct Detection

Advanced Optical Materials, EarlyView.
A polymer–perovskite composite obtained by mechanochemical synthesis enables thick, tunable active layers for efficient absorption of highly penetrating ionizing radiation. Vertical‐electrode detectors achieve low X‐ray detection limits and high sensitivity direct 5 MeV proton sensing.
Camilla Bordoni, Bas A. H. Huisman, Joost W. C. Reinders, Ilaria Fratelli, Massimo Chiari, Laura Basiricò, Henk J. Bolink, Andrea Ciavatti, Michele Sessolo, Beatrice Fraboni   +9 more
wiley   +1 more source

Lyα Emission from K and M Dwarfs: Intrinsic Profiles, Variability, and Flux in the Habitable Zone

The Astrophysical Journal
Lyman-alpha (Ly α ) is the most prominent ultraviolet (UV) emission line in low-mass stars, playing a crucial role in exoplanet atmospheric photochemistry, heating, and escape.
Sarah Peacock, Travis S. Barman, R. O. Parke Loyd, Adam C. Schneider, Allison Youngblood, Kenneth G. Carpenter, Evgenya L. Shkolnik   +6 more
doaj   +1 more source

The Stagnation of Contemporary Stellar Astronomy [PDF]

Proceedings of Accelerating the Rate of Astronomical Discovery — PoS(sps5), 2010
The stellar astronomy has always been considered the fundamental source of knowledge about the basic building blocks of the universe - the stars. It has proved correctness of many physical theories - like e.g. the idea of nuclear fusion in stellar cores, the exchange of mass in interacting binaries or models of stellar evolution towards white dwarfs or
openaire   +2 more sources

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source