Results 81 to 90 of about 2,506 (304)

The Search For Pulsar Wind Nebulae in the Very High Energy Gamma-ray Regime [PDF]

, 2010
The aim of this Thesis is to study the development of pulsar wind nebulae in the TeV regime and in doing so uncover more sources which have as yet not been observed at these wavelengths.
KEOGH, DOMINIC,ROBERT, Keogh, Dominic Robert   +1 more
core  

Neutrino treatment in multidimensional astrophysical simulations : a new spectral scheme [PDF]

, 2014
Neutrinos play a central role in modern physics and astrophysics. Their extremely weak interaction rate with baryons and other leptons makes their detection on the Earth difficult and challenging.
Perego, Albino
core   +1 more source

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Stellar wind accretion and accretion disk formation: Applications to neutron star high-mass X-ray binaries [PDF]

Publications of the Astronomical Society of Japan, 2019
Abstract Recent X-ray observations have revealed the complexity and diversity of high-mass X-ray binaries (HMXBs). This diversity challenges a classical understanding of the accretion process on to the compact objects. In this study, we reinforce the conventional concept of the nature of wind-fed accretion on to a neutron star ...
Karino, Shigeyuki, Nakamura, Kenji, Taani, Ali   +2 more
openaire   +2 more sources

Ion‐Reconfigurable “N”‐Shaped Antiambipolar Behavior in Organic Electrochemical Transistors

Advanced Materials, EarlyView.
A unique N‐shaped negative differential transconductance (NDT) characteristics is demonstrated in single‐polymer organic electrochemical transistors through a sequential doping–redox–doping process driven by iodide ions. This redox‐driven mechanism enables low‐voltage, ion‐controlled reconfigurability and tunable current modulation, allowing seamless ...
Debdatta Panigrahi, Daniele Zucchelli, Zeinab Hamid, Christina Kousseff, Arup Sarkar, Aristea Pavlou, Zhitian Ling, Somayeh Kashani, Iain McCulloch, Paul W. M. Blom, Fabrizio Torricelli, Paschalis Gkoupidenis   +11 more
wiley   +1 more source

Physical parameters of the high-mass X-ray binary 4U1700-37 [PDF]

, 2002
We present the results of a detailed non-LTE analysis of the ultraviolet and optical spectrum of the 06.5 Iaf+ star HD 153919 - the mass donor in the high-mass X-ray binary 4U1700-37. We find that the star has a luminosity log(L*/L⊙) = 5.82 ± 0.07, Teff =
Fairbairn, Malcolm, Kaper, L, Clark, J. S., L. Kaper, Goodwin, S. P., Kaper, Lex, P. A. Crowther, S. P. Goodwin, Brocksopp, Catherine, Langer, N., Goodwin, S P, Clark, Joshua Simon, Crowther, Paul, Crowther, P.A., Goodwin, S.P., C. Brocksopp, Brocksopp, C., M. Fairbairn, Langer, Norbert, Langer, N, N. Langer, Brocksopp, C, Crowther, P A, Kaper, L., J. S. Clark, Fairbairn, M., Goodwin, Simon, Crowther, P. A., Clark, J S, Clark, J.S., Fairbairn, M   +30 more
core   +1 more source

Timing and Spectral Analysis of HMXB 4U 1700-37 Observed with Insight-HXMT

The Astrophysical Journal
We report timing and spectral studies of the high-mass X-ray binary 4U 1700-37 using Insight-HXMT observations carried out in 2020 during its out-of-eclipse state. We found significant variations in flux on a timescale of kilo-seconds, while the hardness
Hua Xiao, Long Ji, Peng Zhang, Lorenzo Ducci, Victor Doroshenko, Andrea Santangelo, Shu Zhang, Shuang-Nan Zhang   +7 more
doaj   +1 more source

Accretion Spin-up and a Strong Magnetic Field in the Slow-spinning Be X-Ray Binary MAXI J0655-013

The Astrophysical Journal, 2023
We present Monitor of All-sky X-ray Image (MAXI) and Nuclear Spectroscopic Telescope Array (NuSTAR) observations of the Be X-ray binary, MAXI J0655−013, in outburst.
Sean N. Pike, Mutsumi Sugizaki, Jakob van den Eijnden, Benjamin Coughenour, Amruta D. Jaodand, Tatehiro Mihara, Sara E. Motta, Hitoshi Negoro, Aarran W. Shaw, Megumi Shidatsu, John A. Tomsick   +10 more
doaj   +1 more source

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

Advanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria, Meng Yin, Stefan Neuhauser, Vlasis G. Mavrantzas, Ying Chen, Ken Suzuki, Andreas T. Güntner   +6 more
wiley   +1 more source

High-Mass X-ray Binaries: progenitors of double compact objects [PDF]

, 2019
A summary is given of the present state of our knowledge of High-Mass X-ray Binaries (HMXBs), their formation and expected future evolution. Among the HMXB-systems that contain neutron stars, only those that have orbital periods upwards of one year will ...
van den Heuvel, E.P.J.
core   +1 more source