Results 91 to 100 of about 327,275 (314)
An enhanced merger fraction within the galaxy population of the SSA22 protocluster at z = 3.1 [PDF]
, 2015 The overdense environments of protoclusters of galaxies in the early Universe (z > 2) are expected to accelerate the evolution of galaxies, with an increased rate of stellar mass assembly and black hole accretion compared to co-eval galaxies in the ...
N. Hine +7 more
semanticscholar +1 more source
Proton Acceleration with Relativistic Electromagnetic Shock
Advanced Science, EarlyView.New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Ting Xiao +5 more
wiley +1 more source
A Unified, Merger-driven Model of the Origin of Starbursts, Quasars, the Cosmic X-Ray Background, Supermassive Black Holes, and Galaxy Spheroids [PDF]
, 2005 We present an evolutionary model for starbursts, quasars, and spheroidal galaxies in which mergers between gas-rich galaxies drive nuclear inflows of gas, producing starbursts and feeding the buried growth of supermassive black holes (BHs) until feedback
P. Hopkins +5 more
semanticscholar +1 more source
Wireless Technologies for Wearable Electronics: A Review
Advanced Electronic Materials, EarlyView.This review discusses recent advancements in wireless wearable electronics, focusing on communication technologies and power solutions. It covers key design considerations, explores wireless protocols from short‐ to long‐range networks, and examines powering methods such as integrated sources and energy harvesting.
Choong Yeon Kim +8 more
wiley +1 more source
Galaxy mergers and gravitational lens statistics [PDF]
The Astrophysical Journal, 1994 We investigate the impact of hierarchical galaxy merging on the statistics of gravitational lensing of distant sources. Since no definite theoretical predictions for the merging history of luminous galaxies exist, we adopt a parametrized prescription, which allows us to adjust the expected number of pieces comprising a typical present galaxy at z=0.65.
Hans-Walter Rix +3 more
openaire +4 more sources
Galaxy merger morphologies and time-scales from simulations of equal-mass gas-rich disc mergers [PDF]
, 2008 A key obstacle to understanding the galaxy merger rate and its role in galaxy evolution is the difficulty in constraining the merger properties and time-scales from instantaneous snapshots of the real Universe.
J. Lotz +7 more
semanticscholar +1 more source
Mergers and galaxy evolution [PDF]
, 2007 Galaxy merging is the late time manifestation of the galaxy formation process and likely significantly effects z < 1 galaxies. A "maximum reasonable rate" model for merging finds a ,~ 2 mag K band increase in the luminosities of dwarf galaxies so that they contribute significantly to the faint counts, with spirals and ellipticals being far less ...
openaire +2 more sources
Formation of a Spiral Galaxy in a Major Merger [PDF]
The Astrophysical Journal, 2005 submitted to ApJL, 4 ...
Springel, Volker, Hernquist, Lars
openaire +4 more sources
Advanced Electronic Materials, EarlyView.A blackbody‐sensitive infrared photodetector comprised of an open‐shell conjugated polymer demonstrates high sensitivity without cooling and exceptional radiation hardness, surpassing inorganic compound semiconductor devices. This functionality, inherent to the polymer semiconductor, provides a new frontier for low‐cost, size, weight, and power space ...
Anthony R. Benasco +10 more
wiley +1 more source
The growth of massive black holes in galaxy merger simulations with feedback by radiation pressure [PDF]
, 2010 We study the growth of massive black holes (BHs) in galaxies using smoothed particle hydrodynamic simulations of major galaxy mergers with new implementations of BH accretion and feedback.
J. DeBuhr, E. Quataert, Chung-Pei Ma
semanticscholar +1 more source