Results 11 to 20 of about 1,099 (195)

Galaxy Rotation Curves from General Relativity with Infrared Renormalization Group Effects

, 2011
We review our contribution to infrared Renormalization Group (RG) effects to General Relativity in the context of galaxies. Considering the effective action approach to Quantum Field Theory in curved background, we argued that the proper RG energy scale, in the weak field limit, should be related to the Newtonian potential.
Rodrigues, Davi C., Letelier, Patricio S., Shapiro, Ilya L.   +2 more
openaire   +2 more sources

Starburst radio galaxies: general properties, evolutionary histories and triggering [PDF]

, 2011
In this paper we discuss the results of a programme of spectral synthesis modelling of a sample of starburst radio galaxies in the context of scenarios for the triggering of the activity and the evolution of the host galaxies.
González Delgado, R., Villar-Martín, M., Delgado, R.G., González Delgado, R., Morganti, R., R. Morganti, Holt, J., B. Emonts, Rodríguez Zaurín, J., R. González Delgado, J. Rodríguez Zaurín, Zaurin, J.R., C. Tadhunter, Almeida, C.R., C. Ramos Almeida, Rodríguez Zaurín, J., J. Holt, Inskip, K., Villar-Martín, M., M. Villar-Martín, Tadhunter, C., Ramos Almeida, C., K. Inskip, Emonts, B.   +23 more
core   +2 more sources

Next Generation Very Large Array Memo No. 7 Science Working Group 2: "Galaxy Ecosystems": The Matter Cycle in and Around Galaxies

, 2015
This white paper discusses how a "next-generation" Very Large Array (ngVLA) operating in the frequency range 1-116 GHz could be a groundbreaking tool to study the detailed astrophysics of the "matter cycle" in the Milky Way and other galaxies. If optimized for high brightness sensitivity, the ngVLA would bring detailed microwave spectroscopy and ...
Leroy, Adam K., Murphy, Eric, Armus, Lee, Brogan, Crystal, Meyer, Jennifer Donovan, Evans, Aaron, Hunter, Todd, Johnson, Kelsey, Koda, Jin, Meier, David S., Menten, Karl, Mills, Elizabeth, Momjian, Emmanuel, Ott, Juergen, Owen, Frazer, Reid, Mark, Rosolowsky, Erik, Schinnerer, Eva, Scoville, Nicholas, Spekkens, Kristine, van Zee, Liese, Wong, Tony   +21 more
openaire   +2 more sources

Nessie: A rust-powered, fast, flexible, and generalized friends-of-friends galaxy-group finder in R and Python

Astronomy and Computing
We introduce Nessie, a galaxy group finder implemented in Rust and distributed as both a Python and R package. Nessie employs the friends-of-friends (FoF) algorithm and requires only on-sky position and redshift as input, making it immediately applicable to surveys that lack a well-defined luminosity function.
Trystan S. Lambert, Aaron S. G. Robotham, Matias Bravo, Claudia del P. Lagos, Rodrigo Tobar, Simon Driver, Adrien Aufan Stoffels d'hautefort   +6 more
openaire   +2 more sources

Next Generation Very Large Array Memo No. 8 Science Working Group 3: Galaxy Assembly through Cosmic Time

, 2015
The Next-Generation Very Large Array (ngVLA) will be critical for understanding how galaxies are built and evolve at the earliest epochs. The sensitivity and frequency coverage will allow for the detection of cold gas and dust in `normal' distant galaxies, including the low-J transitions of molecular gas tracers such as CO, HNC, and HCO+; synchrotron ...
Casey, Caitlin M., Hodge, Jacqueline A., Lacy, Mark, Hales, Christopher A., Barger, Amy, Narayanan, Desika, Carilli, Chris, Alatalo, Katherine, da Cunha, Elisabete, Emonts, Bjorn, Ivison, Rob, Kimball, Amy, Kohno, Kotaro, Murphy, Eric, Riechers, Dominik, Sargent, Mark, Walter, Fabian   +16 more
openaire   +2 more sources

Self‐Powered Flexible Triboelectric‐Gated Ion‐Gel Transistor for Neuromorphic Tactile Sensing and Human Activity Recognition

Advanced Materials, EarlyView.
A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho, Seoyeon Park, Youngmin Lee, Sejoon Lee   +3 more
wiley   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

The effect of the environment on the evolution of galaxy colours [PDF]

, 2006
In chapter 1 of this thesis, I give a brief overview of the birth of modern cosmology and the growth of the current paradigm. I then go on to describe the different types of galaxies, the star formation rates within them and give some notes about galaxy ...
Davies, Gregory Tudor
core  

The Evolution of Galaxies in Radio-Selected Groups

, 1993
The evolution of galaxies in small groups is studied in a way unbiased by selection effects, on the basis of observations of the populations of galaxies around a sample of 98 strong radio galaxies, 65 with redshifts less than 0.25, and 33 with redshifts ...
Zirbel, Esther, Ellis, Richard S., Oemler, Augustus, Ellis, R., Oemler, A. Jr, Allington-Smith, Jeremy R., Allington-Smith, J.R., Zirbel, E.L.   +7 more
core   +1 more source

Groups of two galaxies in SDSS: implications of colours on star formation quenching time-scales [PDF]

, 2013
We have devised a method to select galaxies that are isolated in their dark matter halo (N = 1 systems) and galaxies that reside in a group of exactly two (N=2 systems). Our N=2 systems are widely separated (up to ~200 h-1 kpc), where close galaxy-galaxy
Trinh, Christopher Q, Zentner, Andrew R, Cooper, Michael C, Barton, Elizabeth J, Wechsler, Risa H, Bullock, James S   +5 more
core   +1 more source