Results 91 to 100 of about 368,263 (301)
3D Structures on Relativistic Jets
, 1999 The properties of wave-like helically twisted normal mode structures on steady relativistic jets are summarized. Wave speeds are a function of the wavelength and less than the jet speed.
Biretta +16 more
core +1 more source
SWAS and Arecibo observations of H2O and OH in a diffuse cloud along the line-of-sight to W51 [PDF]
, 2002 Observations of W51 with the Submillimeter Wave Astronomy Satellite (SWAS) have yielded the first detection of water vapor in a diffuse molecular cloud.
David A. Neufeld +7 more
core +4 more sources
Heterogeneous Nanopore Arrays – Selective Modification of Nanopores Embedded in a Membrane
Advanced Materials, EarlyView.Biological processes rely on the concerted action of channels with different functionalities embedded in the same membrane. Inspired by nature, heterogeneous nanopore arrays are prepared where two nanopores are connected in parallel and function as two different elements of an ionic circuit: a diode and a resistor.
Ethan Cao, Zuzanna S. Siwy
wiley +1 more source
Class Transitions and Two Component Accretion Flow in GRS 1915+105
, 2005 The light curve of the galactic micro-quasar GRS 1915+105 changes in at least thirteen different ways which are called classes. We present examples of the transitions from one class to another as observed by the IXAE instrument aboard the Indian ...
A. K. Chatterjee +19 more
core +2 more sources
Detector and Telescope Development for ProtoEXIST and Fine Beam Measurements of Spectral Response of CZT Detectors [PDF]
, 2005 We outline our plan to develop ProtoEXIST, a balloon-borne prototype experiment for the Energetic X-ray Imaging Survey Telescope (EXIST) for the Black Hole Finder Probe. EXIST will consist of multiple wide-field hard X-ray coded-aperture telescopes.
Cook, W. R. +7 more
core +2 more sources
Prevalence of a growth mindset among introductory astronomy students [PDF]
Phys. Rev. Phys. Educ. Res. 20 (2024) 010140While many previous studies have indicated that encouraging a growth mindset can improve student learning outcomes, this conclusion's applicability to college-level astronomy classrooms remains poorly understood owing to the variation in students' overall and domain-specific learning attitudes.
arxiv +1 more source
Hubble Space Telescope Pixel Analysis of the Interacting Face-on Spiral Galaxy NGC 5194 (M51A) [PDF]
, 2011 A pixel analysis is carried out on the interacting face-on spiral galaxy NGC 5194 (M51A), using the HST/ACS images in the F435W, F555W and F814W (BVI) bands. After 4x4 binning of the HST/ACS images to secure a sufficient signal-to-noise ratio for each pixel, we derive several quantities describing the pixel color-magnitude diagram (pCMD) of NGC 5194 ...
arxiv +1 more source
Chiral Pseudogap Metal Emerging from a Disordered Van der Waals Mott Insulator 1T‐TaS2 − xSex
Advanced Materials, EarlyView.An intriguing metal was discovered in a chiral charge density wave material, 1T‐TaS2. The random substitution of S by Se induces a transition from an insulator to a metal with a strongly suppressed electron density at the Fermi energy. The pseudogap comes from electronic disorder on with substantial electron correlation and exhibits unprecedented ...
Hyunjin Jung +7 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.Lithographically defined concentric micro‐ and nanostructures systematically designed and fabricated as reproducible arrays for Surface‐enhanced Raman spectroscopy applications. Abstract Topologically designed micro‐ and nanostructured surface‐enhanced Raman scattering (SERS) substrates propel the advancements of innovative applications, including ...
David Femi Odetade +2 more
wiley +1 more source