Results 91 to 100 of about 849,819 (226)

Sapsucker Wells as a Keystone Nutritional Resource: Evaluating Methods for Detection of Secondary Sap Consumers

open access: yesEcology and Evolution, Volume 15, Issue 10, October 2025.
We used direct observations, camera traps, and environmental DNA (eDNA) to identify secondary consumers of sap from wells created by red‐naped (S. nuchalis) and Williamson's (S. thyroideus) sapsuckers among three groups of shrubs and trees in south‐central Colorado, USA.
Rick Clawges   +5 more
wiley   +1 more source

The Era of Kilometer‐Scale Neutrino Detectors

open access: yesAdvances in High Energy Physics, Volume 2013, Issue 1, 2013., 2013
Neutrino astronomy beyond the Sun was first imagined in the late 1950s; by the 1970s, it was realized that kilometer‐scale neutrino detectors were required. The first such instrument, IceCube, transforms a cubic kilometer of deep and ultra‐transparent Antarctic ice into a particle detector.
Francis Halzen, Uli Katz, Jose Bernabeu
wiley   +1 more source

Is What Comes out the Same as What Goes in? A Preliminary Investigation of the Isotopic Impacts of Digestion by Red‐Tailed Hawks (Buteo jamaicensis) and Eurasian Eagle Owls (Bubo bubo)

open access: yesEcology and Evolution, Volume 15, Issue 5, May 2025.
Isotope analysis of predator feces and consumed prey remains can be used to non‐invasively track diet and reconstruct past environment and climate conditions. However, one must account for the isotopic difference between diet and feces, as well as the possible influence of digestion on consumed prey tissues.
Brooke Erin Crowley   +2 more
wiley   +1 more source

Multimessengers from Core‐Collapse Supernovae: Multidimensionality as a Key to Bridge Theory and Observation

open access: yesAdvances in Astronomy, Volume 2012, Issue 1, 2012., 2012
Core‐collapse supernovae are dramatic explosions marking the catastrophic end of massive stars. The only means to get direct information about the supernova engine is from observations of neutrinos emitted by the forming neutron star, and through gravitational waves which are produced when the hydrodynamic flow or the neutrino flux is not perfectly ...
Kei Kotake   +7 more
wiley   +1 more source

Stellar streams around the Magellanic Clouds [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
15 pages, 11 figures. Figures improved.
Vasily Belokurov, Sergey E. Koposov
openaire   +3 more sources

Phylogeny of Arbacia Gray, 1835 (Echinoidea) Reveals Diversification Patterns in the Atlantic and Pacific Oceans

open access: yesJournal of Biogeography, Volume 52, Issue 3, Page 722-734, March 2025.
ABSTRACT Aim The aim of the current study is to conduct a comprehensive phylogenetic analysis of the genus Arbacia to elucidate the evolution and phylogenetic relationships among all extant species and reevaluate the presence of geographic structure within species that have wide, fragmented distributions.
E. Courville   +9 more
wiley   +1 more source

Pulsar‐Driven Jets in Supernovae, Gamma‐Ray Bursts, and the Universe

open access: yesAdvances in Astronomy, Volume 2012, Issue 1, 2012., 2012
The bipolarity of Supernova 1987A can be understood through its very early light curve from the CTIO 0.4 m telescope and IUE FES and following speckle observations of the “Mystery Spot”. These indicate a beam/jet of light/particles, with initial collimation factors >104 and velocities >0.95 c, involving up to 10−5 M⊙ interacting with circumstellar ...
John Middleditch   +1 more
wiley   +1 more source

Highly-Ionized High-Velocity Gas in the Vicinity of the Galaxy [PDF]

open access: yes, 2002
We report the results of an extensive FUSE study of high velocity OVI absorption along 102 complete sight lines through the Galactic halo. The high velocity OVI traces a variety of phenomena, including tidal interactions with the Magellanic Clouds ...
B. D. Savage   +29 more
core   +2 more sources

THE TIDAL ORIGIN OF THE MAGELLANIC STREAM AND THE POSSIBILITY OF A STELLAR COUNTERPART [PDF]

open access: yes, 2011
We present an N-body model that reproduces the morphology and kinematics of the Magellanic Stream (MS), a vast neutral hydrogen (H i) structure that trails behind the Large and Small Magellanic Clouds (LMC and SMC, respectively) in their orbit about the ...
Jonathan D. Diaz, K. Bekki
semanticscholar   +1 more source

Spectral Studies of Super‐Eddington Accreting Neutron Stars in the Magellanic Clouds

open access: yesAstronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT Major outbursts of BeXRBs offer a unique laboratory for studying accretion onto magnetized neutron stars (NSs) over a large dynamic range. The accreting material is entrained from the accretion disk by the strong magnetic field, and then channeled onto the NS, forming a so‐called accretion column (AC).
Georgios Vasilopoulos   +3 more
wiley   +1 more source

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