Results 61 to 70 of about 42,575 (298)

Galactic Cosmic Ray Interaction with the Perseus Giant Molecular Cloud Using Geant4 Monte Carlo Simulation

Universe
Galactic cosmic rays (GCRs), composed of protons and atomic nuclei, are accelerated in sources such as supernova remnants and pulsar wind nebulae, reaching energies up to the PeV range.
Luan Torres, Luiz Augusto Stuani Pereira
doaj   +1 more source

Atomic and Molecular Data for Diffuse Cloud Chemistry [PDF]

Highlights of Astronomy, 1989
ABSTRACTA brief overview of the procedure for modeling diffuse interstellar clouds is given, and specific needs for atomic and molecular data are pointed out.
openaire   +1 more source

Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field

Advanced Functional Materials, EarlyView.
Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi, Zhengyuan Gao, Sai Phani Kumar Vangala, Amirhossein Farzi, Hamed Heidarpour, Morgan McKee, Nikolay Kornienko, Ali Seifitokaldani   +7 more
wiley   +1 more source

Surveys of the Milky Way and Magellanic System in the λ21-cm line of atomic hydrogen

EPJ Web of Conferences, 2012
In the next three years, surveys of the Northern and Southern skies using focal plane arrays on aperture synthesis radio telescopes will lead to a breakthrough in our knowledge of the warm and cool atomic phases of the interstellar medium and their ...
Dickey J.M.
doaj   +1 more source

Ground-state ammonia and water in absorption towards Sgr B2 [PDF]

, 2010
We have used the Odin submillimetre-wave satellite telescope to observe the ground state transitions of ortho-ammonia and ortho-water, including their 15N, 18O, and 17O isotopologues, towards Sgr B2.
A. O. H. Olofsson, Aa. Sandqvist, Asplund, B. Larsson, Bissantz, Bobylev, Ceccarelli, Cernicharo, Cheung, Comito, Dahmen, Danby, Dickel, Downes, E. Falgarone, E. S. Wirström, Eisenhauer, Englmaier, Frisk, Gardner, Garwood, Goldsmith, Greaves, Greaves, Guesten, Ho, Hüttemeister, Hüttemeister, J. H. Black, Justtanont, Lis, Lis, Liszt, Liszt, M. Olberg, Maercker, Mehringer, Melnick, Menon, Neufeld, Neufeld, Nishiyama, Nummelin, Olberg, P. Bergman, P. J. Encrenaz, Penzias, Polehampton, Polehampton, Polehampton, Rauscher, Reid, Robinson, Rolfs, Rougoor, Rybicki, Sandqvist, Sandqvist, U. Frisk, van der Tak, Vastel, Wadiak, Walmsley, Wannier, Whiteoak, Whiteoak, Whiteoak, Wilson, Wouterloot, Yurchenko, Zmuidzinas, Zuckerman, Å. Hjalmarson   +72 more
core   +3 more sources

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

Advanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang, Jinliang Lv, Yichun Lu, Hanfeng Ye, Xuan Zhang, Leonardo Cancellara, Nadezda Tarakina, Jiande Lin, Xin Gao, Oleksandr Savateev, Jiajia Cheng   +10 more
wiley   +1 more source

The Molecular Cloud Life Cycle. II. Formation and Destruction of Molecular Clouds Diagnosed via H2 Fluorescent Emission

The Astrophysical Journal
Molecular hydrogen (H _2 ) formation and dissociation are key processes that drive the gas life cycle in galaxies. Using the SImulating the LifeCycle of Molecular Clouds zoom-in simulation suite, we explore the utility of future observations of H _2 ...
Blakesley Burkhart, Shmuel Bialy, Daniel Seifried, Stefanie Walch, Erika Hamden, Thomas J. Haworth, Keri Hoadley, Shuo Kong, Madisen Johnson, Sarah Jeffreson, Mark R. Krumholz, Min-Young Lee, Amiel Sternberg, Neal J. Turner   +13 more
doaj   +1 more source

Ultraviolet and Infrared Correlation Studies in Orion

Open Astronomy, 2015
We have studied the variation of diffuse ultraviolet (UV) radiation in the northern part of the Orion constellation using a set of eight areas of the GALEX All-Sky Imaging Survey in the far and near UV.
Bose Lakshmi S., Sujatha N. V., Narayanankutty K.   +2 more
doaj   +1 more source

From the warm magnetized atomic medium to molecular clouds

, 2008
{It has recently been proposed that giant molecular complexes form at the sites where streams of diffuse warm atomic gas collide at transonic velocities.} {We study the global statistics of molecular clouds formed by large scale colliding flows of warm ...
Audit, Ballesteros-Paredes, Crutcher, E. Audit, E. Vázquez-Semadeni, Fromang, Fryxell, Glover, Heitsch, Heitsch, Hennebelle, Hennebelle, Hennebelle, Koyama, Koyama, P. Hennebelle, R. Banerjee, R. S. Klessen, Teyssier, Troland, Vázquez-Semadeni, Vázquez-Semadeni, Williams   +22 more
core   +3 more sources

Probing the turbulent ambipolar diffusion scale in molecular clouds with spectroscopy [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
14 pages, accepted for publication in ...
Hezareh, Talayeh, Csengeri, Timea, Houde, Martin, Herpin, Fabrice, Bontemps, Sylvain   +4 more
openaire   +4 more sources