Results 111 to 120 of about 134,801 (246)

Massive galaxies with very young AGN

, 2007
Gigahertz Peaked Spectrum (GPS) radio galaxies are generally thought to be the young counterparts of classical extended radio sources and live in massive ellipticals.
de Vries, I. A. G. Snellen, M. D. Lehnert, M. N. Bremer, Nathan de Vries, R. T. Schilizzi   +5 more
core   +2 more sources

Lines of Galaxies from Radio Sources [PDF]

, 1968
Halton Arp
openalex   +1 more source

Potential Spectral Tuning of the Tapetum Lucidum in a Broadly Distributed Ungulate

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 343, Issue 8, Page 905-910, October 2025.
ABSTRACT The tapetum lucidum, a biological reflector system found in the eyes of many vertebrate species, enhances visual sensitivity in low light conditions by reflecting light back through the retina. The structure of the ungulate tapetum fibrosum is unique, and its reflectance varies temporally in reindeer (Rangifer tarandus).
Blaise A. Newman, Billy R. Hammond Jr., Gino J. D'Angelo   +2 more
wiley   +1 more source

The Radio Emission from Normal Galaxies: II. A Study of 20 Spirals at 158 Mc/s [PDF]

, 1961
R. H. Brown, C. Hazard
openalex   +1 more source

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

Journal of Research in Science Teaching, Volume 62, Issue 8, Page 1902-1922, October 2025.
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

Observations of Radio Emission from Normal Galaxies [PDF]

, 1963
DS Mathewson, JM Rome
openalex   +1 more source

The physiology of survival: Space

Experimental Physiology, EarlyView.
Damian M. Bailey, Angelique van Ombergen
wiley   +1 more source

Characterization of Regional Space Weather Conditions in Mexico During Solar Minimum 24/25: Baseline for Severity Scale Development

Space Weather, Volume 23, Issue 10, October 2025.
Abstract Using observations from the National Space Weather Laboratory's (LANCE acronym in Spanish) ground‐based network, we characterize regional space weather conditions in Mexico during the solar minimum 24/25 (2018–2020). Data analyzed include regional geomagnetic indices (the regional K index, Kmex, and Δ ${\Delta }$H), ionospheric Total Electron ...
J. A. Gonzalez‐Esparza, E. Sanchez‐Garcia, M. Sergeeva, P. Corona‐Romero, V. J. Gatica‐Acevedo, C. I. Castellanos, L. X. Gonzalez‐Mendez   +6 more
wiley   +1 more source

Delayed and Fast-rising Radio Flares from an Optical and X-Ray-detected Tidal Disruption Event in the Center of a Dwarf Galaxy

The Astrophysical Journal Letters
AT 2018cqh is a unique tidal disruption event (TDE) discovered in a dwarf galaxy. Both the light-curve fitting and galaxy scaling relationships suggest a central black hole mass in the range of 5.9 < log M _BH / M _☉ < 6.4. The r-band peak luminosity is ∼
Fabao Zhang, Xinwen Shu, Lei Yang, Luming Sun, Zhumao Zhang, Yibo Wang, Guobin Mou, Xue-Guang Zhang, Tianyao Zhou, Fangkun Peng   +9 more
doaj   +1 more source

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

Functional Ecology, Volume 39, Issue 10, Page 2573-2587, October 2025.
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