Results 41 to 50 of about 240,676 (167)

Visible-IR Colors and Lightcurve Analysis of Two Bright TNOs: 1999 TC36 and 1998 SN165

open access: yes, 2002
We report on observations of two bright Trans-Neptunian Objects (TNOs) - 1999 TC36 and 1998 SN165}- during two observational campaigns, as part of the Meudon Multicolor Survey of Outer Solar System Objects. V-J color was measured for 1999 TC36 (V-J=2.34+/
Doressoundiram, A.   +2 more
core   +2 more sources

Superfluid vortices in neutron stars [PDF]

open access: yes, 2001
A microscopic, quantum mechanical model for neutron vortices in the crust of a neutron star is presented. After a brief introduction to the Bogoliubov- de Gennes equations, which form the basis for our calculations, we present results for density ...
Anderson   +22 more
core   +2 more sources

Circular Polarization in Pulsar Integrated Profiles: Updates

open access: yes, 2006
We update the systematic studies of circular polarization in integrated pulse profiles by Han et al (1998). Data of circular polarization profiles are compiled.
Biggs J D   +30 more
core   +1 more source

Stability of the mixed phase in hybrid stars

open access: yes, 2004
The transition from hadronic matter to quark matter in the core of neutron stars is likely to be associated with the appearance of a mixed phase, leading to a smooth variation of the star density profile.
Akmal   +30 more
core   +1 more source

Probing the variability of the fine-structure constant with the VLT/UVES [PDF]

open access: yes, 2003
We assess the cosmological variability of the fine-structure constant from the analysis of an ensemble of Fe II absorption lines at the redshift z=1.15 toward the QSO HE 0515-4414 by means of the standard many-multiplet (MM) technique and its revision ...
Levshakov, Sergei A.   +2 more
core   +1 more source

Heliocentric Potential (HCP) Prediction Model for Nowscast of Aviation Radiation Dose [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2015
It is well known that the space radiation dose over the polar route should be carefully considered especially when the space weather shows sudden disturbances such as CME and flares.
Junga Hwang   +4 more
doaj   +1 more source

Inexpensive DIY Magnetometer Designs for Formal and Informal Investigations of Geomagnetic Sq Variations and Space Weather Events

open access: yesIEEE Access
Simple magnetometers are the gateway instruments for exploring the geomagnetic field that can be used by hobbyists and teachers alike to monitor and study a variety of space weather phenomena.
Sten Odenwald   +3 more
doaj   +1 more source

Narrow-Band Spectrophotometry of Comet Hale-Bopp (C/1995 O1) Near Perihelion I.: Photometric Behavior of C2, C3, CN Molecular Bands [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2000
We present the results from narrow-band spectrophotometry of Comet Hale-Bopp (C/1995 O1) near perihelion obtained at Sobaeksan Optical Astronomy Observatory 61cm telescope equipped with PM 512 CCD camera (512 x 512, 0.5''/pixel) and narrow-band filter ...
Eon-Chang Sung, Ho-Il Kim, Jae Hyuk Youn
doaj  

SWAS and Arecibo observations of H2O and OH in a diffuse cloud along the line-of-sight to W51 [PDF]

open access: yes, 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

Design of a hybrid NAR-RBFs neural network for nonlinear dusty plasma system

open access: yesAlexandria Engineering Journal, 2020
Robust modeling of a multimodal dynamic system is a challenging and fast-growing area of research. In this study, an integrated bi-modal computing paradigm based on Nonlinear Autoregressive Radial Basis Functions (NAR-RBFs) neural network model, a new ...
Ayaz Hussain Bukhari   +5 more
doaj   +1 more source

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