Results 91 to 100 of about 73,378 (298)

Ultra-luminous X-ray sources as neutron stars propelling and accreting at super-critical rates in high-mass X-ray binaries [PDF]

Proceedings of the International Astronomical Union, 2018
AbstarctUltra-luminous X-ray sources (ULXs) are off-nuclear point sources in nearby galaxies with luminosities well exceeding the Eddington limit for stellar-mass objects. It has been recognized after the discovery of pulsating ULXs (PULXs) that a fraction of these sources could be accreting neutron stars in high-mass X-ray binaries (HMXBs) though the ...
M. Hakan Erkut, K. Yavuz Ekşi
openaire   +2 more sources

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

Advanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta, Simone Bertucci, Jose Mendoza‐Carreño, Agustín Mihi, Paola Lova, Davide Comoretto, Ullrich Steiner, Marco Lattuada, Andrea Dodero   +8 more
wiley   +1 more source

Optical emission from massive donors in ULX binary systems

, 2007
We present evolutionary tracks of binary systems with high mass companion stars and stellar-through-intermediate mass BHs. Using Eggleton's stellar evolution code, we compute the luminosity produced by accretion from the donor during its entire evolution.
Abel, Alessandro Patruno, Alexander, Arp, Ayal, Baumgardt, Baumgardt, Begelman, Begelman, Blecha, Clark, Colbert, Copperwheat, Copperwheat, Cropper, de Jager, Demircan, Dewangan, Dewangan, Dubus, Ebisawa, Eggleton, Eggleton, Feng, Fiorito, Frank, Gierliński, Gioia, Goad, Goad, Gonçalves, Gutiérrez, Gürkan, Hopman, Howarth, Irwin, Jeltema, Kaaret, Kaaret, King, King, Kitchin, Körding, Lamers, Landau, Liu, Liu, Liu, Liu, Luca Zampieri, Madau, Madhusudhan, Miller, Miller, Mucciarelli, Mucciarelli, Mucciarelli, Pakull, Patruno, Podsiadlowski, Pols, Pols, Portegies Zwart, Portegies Zwart, Ramsey, Rappaport, Rees, Roberts, Roberts, Roberts, Shakura, Shimura, Soberman, Soria, Soria, Stobbart, Strohmayer, Strohmayer, Swartz, Swartz, Tully, Ulmer, van Paradijs, Watarai, Zampieri, Zezas   +85 more
core   +1 more source

MAD-Accretion Scenario in High-Mass X-Ray Binaries with Neutron Stars

Astrophysical Bulletin
The wind-fed accretion of gas with an intrinsic magnetic field onto neutron stars in high-mass X-ray binaries (HMXBs) is discussed. The criteria for the implementation of quasi-spherical accretion in the system, the formation of a Keplerian accretion disk and a non-Keplerian magnetically arrested disk (MAD-accretion scenario) are formulated.
Ikhsanov, N. R., Piotrovich, M. Yu., Beskrovnaya, N. G.   +2 more
openaire   +2 more sources

Additive Manufacturing of NiTi Shape Memory Alloys for Elastocaloric Applications: A Review

Advanced Functional Materials, EarlyView.
Additive manufacturing enables complex NiTi architectures that overcome key limitations in elastocaloric refrigeration, including poor heat transfer and high mechanical work input. This review surveys recent advances in LPBF‐ and DED‐fabricated NiTi shape memory alloys for elastocaloric applications, highlighting process–structure–performance ...
Ignatius Andre Setiawan, Mohammad Mehrali, Jaka Tušek, Shiva Mohajerani, Xiebin Wang, Dermot Brabazon, Mohammad Elahinia, Mehrshad Mehrpouya   +7 more
wiley   +1 more source

Discovery of a Rare Eclipsing Be/X-Ray Binary System, Swift J010902.6-723710 = SXP 182

The Astrophysical Journal Letters
We report on the discovery of Swift J010902.6-723710, a rare eclipsing Be/X-ray Binary system by the Swift SMC Survey (S-CUBED). Swift J010902.6-723710 was discovered via weekly S-CUBED monitoring observations when it was observed to enter a state of X ...
Thomas M. Gaudin, Jamie A. Kennea, M. J. Coe, I. M. Monageng, Andrzej Udalski, L. J. Townsend, David A. H. Buckley, Phil A. Evans   +7 more
doaj   +1 more source

Radiative Feedback from high mass X-ray binaries on the formation of the first galaxies and early reionization

, 2014
Recent work suggests that the first generation of stars, the so-called Population III (Pop III), could have formed primarily in binaries or as members of small multiple systems.
Bromm, Volker, Jeon, Myoungwon, Milosavljevic, Milos, Pawlik, Andreas H.   +3 more
core   +1 more source

Evidence for a constant IMF in early-type galaxies based on their X-ray binary populations [PDF]

, 2014
A number of recent studies have proposed that the stellar initial mass function (IMF) of early type galaxies varies systematically as a function of galaxy mass, with higher mass galaxies having bottom heavy IMFs.
Gonzalez, Anthony H., Kundu, Arunav, Lehmer, Bret D., Maccarone, Thomas J., Maraston, Claudia, Peacock, Mark B., Zepf, Stephen E.   +6 more
core   +2 more sources

High Mass X-ray Binaries: The Donor Stars and their Compact Companions [PDF]

, 2008
This thesis presents new spectroscopic observations of the donor star in several High Mass X-ray Binary systems. The various types of X-ray Binary systems that exist are outlined and the methods and limitations of mass determination of the stellar components are discussed. The masses of the compact objects are determined for the systems SMC X-1 and LMC
openaire   +1 more source

An Engineered Living Material With Pro‐Angiogenic Activity Inducible by Near‐Infrared Light

Advanced Functional Materials, EarlyView.
NIR‐responsive engineered living materials (ELMs) for controlled angiogenesis: Near‐infrared (800 nm) light activates engineered probiotic bacteria within alginate‐based living materials to secrete a blood vessel‐regenerating protein. The released protein promotes pro‐angiogenic effects in endothelial networks and chick chorioallantoic membranes.
Anwesha Chatterjee, Stefanie S. M. Meier, Sara Trujillo, Andreas Möglich, Shrikrishnan Sankaran   +4 more
wiley   +1 more source