Results 121 to 130 of about 1,073,559 (305)

The environments of luminous radio galaxies and type-2 quasars [PDF]

, 2013
We present the results of a comparison between the environments of (1) a complete sample of 46 southern 2-Jy radio galaxies at intermediate redshifts (0.05
C. R. Almeida, C. R. Almeida, P. Bessiere, C. Tadhunter, K. Inskip, R. Morganti, D. Dicken, J. Gonzalez-serrano, J. Holt   +8 more
semanticscholar   +1 more source

A Morphological Identification and Study of Radio Galaxies from LoTSS DR2. I. The “Winged” Radio Galaxies

The Astrophysical Journal Supplement Series
We conducted an extensive identification and analysis of various morphological classes and subclasses of radio galaxies using the latest high-resolution data from the second data release of the LOFAR Two-metre Sky Survey.
Soumen Kumar Bera, Taotao Fang, Tapan K. Sasmal, M. Kunert-Bajraszewska, Xuelei Chen, Soumen Mondal   +5 more
doaj   +1 more source

Tools for Learning—Promoting Reflection for Student Teachers' Development of PCK

Journal of Research in Science Teaching, EarlyView.
ABSTRACT This paper investigates how the coherent integration of three different tools for reflection during a science methods course can contribute to student teachers' planning and enactment of science teaching, that is, their development of pedagogical content knowledge (PCK).
Pernilla Nilsson, Anne‐Marie Cederqvist   +1 more
wiley   +1 more source

Are radio galaxies and quiescent galaxies different? Results from the analysis of HST brightness profiles

, 2005
We present a study of the optical brightness profiles of early type galaxies, using a number of samples of radio galaxies and optically selected elliptical galaxies.
A. Capetti, Bender, Bender, Bender, Bettoni, Bettoni, Byun, Capetti, Capetti, Carollo, Carollo, Chiaberge, Crane, De Koff, de Ruiter, de Ruiter, Djorgovski, Dressler, Faber, Fanti, Ferrarese, Gebhardt, Gonzalez-Serrano, Gonzalez-Serrano, Graham, Graham, H. R. de Ruiter, Jaffe, Kormendy, L. Santantonio, Laine, Lauer, Lauer, Lauer, Lauer, Lucy, Magorrian, Martel, McLure, McLure, Milosavljevic, Morganti, Morganti, P. Parma, Parma, Parma, Parma, Pellegrini, R. Fanti, R. Morganti, Ravindranath, Rest, Richardson, Sandage, Smith, Trujillo, van der Marel, Verdoes Kleijn, Wandel, Wilson, Woo   +60 more
core   +1 more source

Why Are Radio-Galaxies Prolific Producers of Type Ia Supernovae? [PDF]

, 2005
An analysis of SNIa events in early type galaxies from the Cappellaro et al (1999) database provides conclusive evidence that the rate of type Ia Supernovae (SNe) in radio-loud galaxies is about 4 times higher than the rate measured in radio-quiet ...
Bondi H., Cappellaro E., Cappellaro E., Enrico Cappellaro, Filippo Mannucci, Greggio L., Kochhar R. K., Kochhar R. K., Massimo Della Valle, Massimo Turatto, Nino Panagia, Paolo Padovani, Sadler E. M., Sandage A., Srianand R., Tinsley B. M., Tutukov A. V., Tutukov A. V.   +17 more
core   +2 more sources

The particle content of low-power radio galaxies in groups and clusters [PDF]

, 2013
The synchrotron-radiating particles and magnetic fields in low-power radio galaxies (including most nearby cluster-centre sources), if at equipartition, can provide only a small fraction of the total internal energy density of the radio lobes or plumes ...
J. Croston, M. Hardcastle
semanticscholar   +1 more source

LUMINOSITY-LINEAR SIZE RELATION FOR GALAXIES AND QUASARS WITH STEEP RADIO SPECTRUM

Odessa Astronomical Publications, 2016
Our data for sources with steep radio spectrum, detected with radio telescope UTR-2 at the decametre band give evidence on the great luminosities, linear sizes, characteristic ages of these objects.
A. P. Miroshnichenko
doaj   +1 more source

Vision at high latitudes: High sensitivity without specific boreal adaptations in photoreception in reindeer (Rangifer tarandus L.)

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The light climate at high latitudes, in particular the extended twilight of winter and the reduced diel variation in light level in midsummer and midwinter, potentially constrains visual function and the synchronisation of temporal organisation in polar species. In this
Nicholas J. C. Tyler, Robert A. E. Fosbury, David Hazlerigg, Christopher Hogg   +3 more
wiley   +1 more source

A TWO-PARAMETER MODEL FOR THE INFRARED/SUBMILLIMETER/RADIO SPECTRAL ENERGY DISTRIBUTIONS OF GALAXIES AND ACTIVE GALACTIC NUCLEI [PDF]

, 2014
A two-parameter semi-empirical model is presented for the spectral energy distributions of galaxies with contributions to their infrared–submillimeter–radio emission from both star formation and accretion disk-powered activity.
D. Dale, G. Helou, G. Magdis, L. Armus, T. Díaz-Santos, Yong Shi   +5 more
semanticscholar   +1 more source

From cities to refuges for pollinators: Urban practices for enhancing pollinator habitats in changing landscapes

Journal of Applied Ecology, EarlyView.
A framework for the support of pollinators in urban areas is developed here, based on five pillars: nesting, flower resources, artificial support, management and society acceptance, with additional key elements from science and society. Society should incorporate strategies for pollinators as in this framework by means of co‐planning with stakeholders,
Rosa Ranalli, Sara Borghesan, Massimo Labra, Paolo Biella   +3 more
wiley   +1 more source