Browsing Publications by Title
Now showing items 1-20 of 1676
-
2006 May-July major radio flare episodes in Cygnus X-3: Spectrotiming analysis of the X-ray data
(2013)We analyse in detail the X-ray data of the microquasar Cygnus X-3 obtained during major radio flaring episodes in 2006 with multiple observatories. The analysis consists of two parts: probing the fast (~1min) X-ray spectral ... -
The 2010 very high energy y-ray flare and 10 years of multi-wavelength observations of M 87
(2012-02-02)The giant radio galaxy M 87 with its proximity (16 Mpc), famous jet, and very massive black hole ((3 – 6) × 109 M ☉) provides a unique opportunity to investigate the origin of very high energy (VHE; E > 100 GeV) γ-ray ... -
2DEG channel-dependent model for Hg1-xCdxTe based pseudomorphic HEMTs
(2000-07-18)HgCdTe has emerged as an important electronic material because of its IRFPA applications. Technologies for growing the material are advanced and current sources for the material are more readily available than in the past. ... -
2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system?
(2003-11)We report the discovery of a new eclipsing system less than one arcminute south of the pulsating DB white dwarf KUV 05134+2605 . The object could be identified with the point source 2MASS J0516288+260738 published by the ... -
The ~60-year power spectral peak of the magnetic variations around London and the Earth's rotation rate fluctuations
(1989)Maximum entropy spectral analysis has been applied to the annual mean magnetic data around London for the years 1839-1974. These data were compiled by Malin and Bullard. The existence of a ~60 yr spectral line is clearly ... -
70 DA white dwarfs identified in LAMOST pilot survey
(2013-06)We present a spectroscopically identified catalog of 70 DA white dwarfs (WDs) from the LAMOST pilot survey. Thirty-five are found to be new identifications after cross-correlation with the Eisenstein et al. and Villanova ... -
The 72-h WEBT microvariability observation of blazar S5 0716+714 in 2009
(2013-10-10)Context. The international Whole Earth Blazar Telescope (WEBT) consortium planned and carried out three days of intensive micro-variability observations of S5 0716+714 from February 22, 2009 to February 25, 2009. This ... -
Absorption spectroscopy of colored dissolved organic carbon in Georgia (USA) rivers: The impact of molecular size distribution
(2003)Dissolved organic carbon (DOC) was collected in six rivers that transect the coastal plain of Georgia in July 1999 and February 2000. DOC concentrations ranged from 4.9 to 40.7 g m-3 and from 7.1 to 40.5 g m-3, respectively. ... -
Abundance of elements beyond the iron group in cool do white dwarfs
(2005-09-10)We report the presence of elements beyond the iron group in the atmospheres of the cool DO white dwarfs HD 149499 B and HZ 21. Photospheric lines of germanium (Z = 32), arsenic (33), selenium (34), tin (50), tellurium (52), ... -
Abundances and energy spectra of corotating interaction region heavy ions observed during solar cycle 23
(2008-05-10)Using instruments on the ACE spacecraft, we surveyed the heavy-ion spectra and composition over the range He– Fe for 41 corotating interaction regions (CIRs) during 1998–2007. Below~ 1 MeV nucleon^-1 the spectra are power ... -
Abundances of heavy and ultraheavy ions in ³He-rich solar flares
(2004-05-01)We have surveyed ³He-rich solar energetic particle (SEP) events over the period 1997 September-2003 April in order to characterize abundances of heavy ions near 400 keV nucleonˉ¹. The first part of the study focuses on 20 ... -
Acceleration of low-energy ions at parallel shocks with a focused transport model
(2013-04-10)We present a test particle simulation on the injection and acceleration of low-energy suprathermal particles by parallel shocks with a focused transport model. The focused transport equation contains all necessary physics ... -
Acceleration of suprathermal particles by compressional plasma wave trains in the solar wind
(2010-12-04)This paper presents a calculation of particle acceleration by an idealized compressional plasma wave train. In this model, suprathermal particles, such as pickup ions, are continuously injected into a wave train consisting ... -
Acceleration of ³He nuclei at interplanetary shocks
(2001-05-20)e have surveyed the 0.5-2.0 MeV nucleonˉ¹ ion composition of 56 interplanetary (IP) shocks observed with the Ultra - Low-Energy Isotope Spectrometer on board the Advanced Composition Explorer from 1997 October 1 through ... -
Acquisition of airborne imagery in support of Deepwater Horizon oil spill recovery assessments
(2012-10-19)Remote sensing imagery was collected from a low flying aircraft along the near coastal waters of the Florida Panhandle and northern Gulf of Mexico and into Barataria Bay, Louisiana, USA, during March 2011. Imagery was ... -
Activity coefficient and the Einstein relation
(1983-07-15)A connection between the activity coefficient of current carriers and the Einstein relations is established by two methods, one based on normal semiconductor concepts and one based on irreversible thermodynamics. The ... -
An Adaptive Distributed Data Aggregation based on RCPC for Wireless Sensor Networks
(2006-05-10)One of the most important design issues in wireless sensor networks is energy efficiency. Data aggregation has significant impact on the energy efficiency of the wireless sensor networks. With massive deployment of sensor ... -
Adaptive handoff algorithms based on self-organizing neural networks to enhance the quality of service of nonstationary traffic in hierarchical cellular networks
(2000-03-30)Third-generation (3G) wireless networks, based on a hierarchical cellular structure (HCS), support tiered levels of multimedia services. These services can be categorized as real-time and delay-sensitive, or non-real-time ... -
Adaptive threshold selection technique for denoising in dithered quantizers
(2001-03-26)We described an adaptive denoising method to improve image quality in a wavelet-based image compression process that uses dithered quantization. In our method, the second-order moment of the quantization noise is ... -
Adrenal gland and lung lesions in Gulf of Mexico common bottlenose dolphins (Tursiops truncatus) found dead following the Deepwater Horizon oil spill
(2015-05-20)A northern Gulf of Mexico (GoM) cetacean unusual mortality event (UME) involving primarily bottlenose dolphins (Tursiops truncatus) in Louisiana, Mississippi, and Alabama began in February 2010 and continued into 2014. ...