Results 51 to 60 of about 41,445 (309)

Modulated Gamma-ray emission from compact millisecond pulsar binary systems

, 2013
A significant amount of the millisecond pulsars has been discovered within binary systems. In several such binary systems the masses of the companion stars have been derived allowing to distinguish two classes of objects, called the Black Widow and the ...
Bednarek, W.
core   +1 more source

Identification of serum protein biomarkers for pre‐cancerous lesions associated with pancreatic ductal adenocarcinoma

Molecular Oncology, EarlyView.
This work identified serum proteins associated with pancreatic epithelial neoplasms (PanINs) and early‐stage PDAC. Proteomics screens assessed genetically engineered mice with abundant PanINs, KPC mice (Lox‐STOP‐Lox‐KrasG12D/+ Lox‐STOP‐Lox‐Trp53R172H/+ Pdx1‐Cre) before PDAC development and also early‐stage PDAC patients (n = 31), compared to benign ...
Hannah Mearns, Jaclyn S. Long, Sergio Lilla, Kelly Hodge, Marcus J. G. W. Ladds, Colin Nixon, Paula Fernández‐Palanca, Sara Zanivan, Pilar Acedo, Stephen P. Pereira, Kevin M. Ryan   +10 more
wiley   +1 more source

Modeling Stellar Collisions in Galactic Nuclei Using Hydrodynamic Simulations and Machine Learning

The Astrophysical Journal
Nuclear star clusters represent some of the most extreme collisional environments in the Universe. A nuclear star cluster like that of the Milky Way harbors a supermassive black hole at its center, which accelerates stars to high speeds (≳100–1000 km s ^−
Sanaea C. Rose, James C. Lombardi Jr., Elena González Prieto, Fulya Kıroğlu, Frederic A. Rasio   +4 more
doaj   +1 more source

Two-Dimensional Stellar Collisions

The Astrophysical Journal, 1968
Head-on collision between two solar type stars, discussing shock front propagation, mass flow and relativistic ...
openaire   +1 more source

Stochastic processes, galactic star formation, and chemical evolution. Effects of accretion, stripping, and collisions in multiphase multi-zone models [PDF]

, 2005
This paper reports simulations allowing for stochastic accretion and mass loss within closed and open systems modeled using a previously developed multi-population, multi-zone (halo, thick disk, thin disk) treatment.
Casuso, Chiappini, Cignoni, Comins, Copi, Copi, D. Galli, de Mello, Feldman, Ferrini, Ferrini, Franco, G. Valle, Galli, Gerola, Grevesse, Hellsten, Hébard, Kroupa, Lejeune, Lubowich, Lynden-Bell, Matteucci, Pardi, Quilis, S. N. Shore, Schulman, Shore, Shore, Shore, Tinsley, Travaglio, Valle, Vidal-Madjar, Vollmer, Vollmer   +35 more
core   +2 more sources

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

Molecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu, Xixi Lin, Emil Mladenov, Veronika Mladenova, Jürgen Thomale, Ali Sak, Yao Wang, Yunxuan Deng, Eleni Gkika, Martin Stuschke, George Iliakis   +10 more
wiley   +1 more source

Magnetic Field Amplification during Stellar Collisions between Low-mass Stars

The Astrophysical Journal Letters
Blue straggler stars in stellar clusters appear younger and bluer than other cluster members, offering a unique opportunity to understand the stellar dynamics and populations within their hosts.
Taeho Ryu, Alison Sills, Ruediger Pakmor, Selma de Mink, Robert Mathieu   +4 more
doaj   +1 more source

Stellar Collisions and Blue Straggler Formation

, 2001
We review recent 3D hydrodynamic calculations of stellar collisions using the Smoothed Particle Hydrodynamics (SPH) method, and we discuss the implications of the results for the formation and evolution of blue stragglers in globular clusters. We also discuss the construction of simple analytic models for merger remnants, approximating the mass loss ...
Lombardi, James C., Rasio, Frederic A.
openaire   +2 more sources

Blue Stragglers in Globular Clusters: Observations, Statistics and Physics

, 2014
This chapter explores how we might use the observed {\em statistics} of blue stragglers in globular clusters to shed light on their formation.
Knigge, Christian
core   +1 more source

Collisions and close encounters involving massive main-sequence stars [PDF]

, 2006
We study close encounters involving massive main sequence stars and the evolution of the exotic products of these encounters as common--envelope systems or possible hypernova progenitors.
Dale, James E., Davies, Melvyn B.
core   +1 more source