Results 91 to 100 of about 172,368 (310)

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

Quantifying the Impact of Relativistic Precession on Tidal Disruption Event Light Curves

Astronomische Nachrichten, EarlyView.
ABSTRACT The tidal field of a black hole can turn a star into a gas stream whose orbit can precess, especially if the a black hole is rapidly spinning. In this work, we investigate the impact of precession on the light curves of tidal disruption events (TDE).
Diego Calderón, Ondřej Pejcha, Brian D. Metzger, Paul C. Duffell, Stephan Rosswog   +4 more
wiley   +1 more source

Chemical evolution of galaxies and galaxy formation mechanisms [PDF]

Proceedings of Baryons in Dark Matter Halos — PoS(BDMH2004), 2004
I will describe the results if models for the chemical evolution of galaxies of different morphological type (ellipticals, spirals and irregulars), and compare them with observations in order to impose constraints on the mechianisms of formation and evolution of galaxies.
openaire   +1 more source

Formation and Evolution of Nucleated Galaxies [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractWe discuss how stellar galactic nuclei (SGN) form and evolve during galaxy formation and evolution based on chemodynamical simulations on the central regions (1-1000 pc) of galaxies. Our simulations demonstrate that dissipative formation of SGN through rapid transfer of gas into the central 10 pc of galaxies is more consistent with recent ...
openaire   +1 more source

On the Determination of Star Formation Rates in Evolving Galaxy Populations [PDF]

, 2000
The redshift dependence of the luminosity density in certain wavebands (e.g. UV and H-alpha) can be used to infer the history of star formation in the populations of galaxies producing this luminosity.
B. Mobasher, Bressan A., Fioc M., J. Afonso, L. Cram, Madau P., Pozzetti L., Rowan-Robinson M.   +7 more
core   +2 more sources

Understanding Degradation Mechanisms in Water‐In‐Salt Electrolyte. Part 2: Impact of the Electrochemical Parameters on the Cycling Behavior of LiFePO4 versus TiS2

Batteries &Supercaps, EarlyView.
Cycling water‐in‐salt batteries involves complex degradation processes that require multiprobe analysis. Using online electrochemical mass spectrometry (OEMS), postmortem X‐ray photoemission spectroscopy (XPS) (including hard‐XPS), and scanning electron microscopy (SEM), the degradation mechanisms are examined in composite electrodes (TiS2 and LiFePO4)
Célia Doublet, Théo Faverge, Vincent Martin, Hiram Castillo Michel, Jean‐Pascal Rueff, Marian Chatenet, Lauréline Lecarme, Claire Villevieille   +7 more
wiley   +1 more source

The impact of early massive galaxy formation on the cosmic microwave background

Nuclear Physics B
The Cosmic Microwave Background (CMB) anisotropies, corrected for foreground effects, form the foundation of cosmology and support the Big Bang model.
Eda Gjergo, Pavel Kroupa
doaj   +1 more source

The evolution of the star-forming sequence in hierarchical galaxy formation models. [PDF]

, 2014
It has been argued that the specific star formation rates of star forming galaxies inferred from observational data decline more rapidly below z = 2 than is predicted by hierarchical galaxy formation models. We present a detailed analysis of this problem
Peter D Mitchell, C. Lacey, S. Cole, C. M. B. Icc, Durham   +4 more
semanticscholar   +1 more source

Form flows function: Learner‐centered game Re‐design in a STEM classroom

British Educational Research Journal, EarlyView.
Abstract Re‐designing games facilitates interest‐driven learning and immerses learners in systems thinking. However, there are limited studies exploring how the form and function of tabletop games influence learners' design decisions and learning experiences. To address this gap, we conducted a mixed‐methods study in a STEM classroom in western Canada.
Farzan Baradaran Rahimi, Beaumie Kim, Shima Dadkhahfard   +2 more
wiley   +1 more source

Boosted Tidal Disruption by Massive Black Hole Binaries During Galaxy Mergers FROM The View of N-Body Simulation [PDF]

, 2016
Supermassive black hole binaries (SMBHBs) are productions of the hierarchical galaxy formation model. There are many close connections between central SMBH and its host galaxy because the former plays very important roles on the formation and evolution ...
Berczik, Peter, Li, Shuo, Liu, F. K., Spurzem, Rainer   +3 more
core   +3 more sources