... On a possible reason of T c suppression with oxygen doping in Tl 2 Ba 2 CuO 6+x. Abstract: . Magnetic susceptibility and 63 Cu and 205 Tl nuclear spin-lattice relaxation rates have been measured in Tl 2 Ba 2 CuO 6+x high- temperature superconductor to establish the mechanism of decreasing the transition temperature with oxygen doping. The experiments have revealed the presence of localized paramagnetic centers (LPC) whose concentration grown with increasing oxygen content. ...

... Home . ... Data . ... Calibration . ... Data Analysis . Data Analysis Home . ... Apparent sporadic variations in the closed position of the two WFPC2 shutter blades were detected by examining the light reflected from the shutter in internal flats (INTFLATs). To characterize this phenomenon, we developed a simple algorithm to measure the history of the shutter jitter using INTFLATs. We found the position jitter in the direction of shutter motion to be minimal, indicating stable behavior. ...

... P2444 Date Received: 2008 -Oct-01 14:42:53 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 9 Hours 3 Investigating the possible spectral turn-up in PSR B0611+22 The pulsar B0611+22 exhibits strange behavior with regards to its spectral index. ... Here, we attempt to observe B0611+22 at multiple frequencies, including 5 GHz and 10 GHz to better understand this pulsar's spectral index. ...

Leonid dust trail theories . ... Proc. Int. Meteor Conf., Frasso Sabino 1999, ed. R. Arlt, IMO, 5-21 (2000) . ... At the end of the 19th century, Irish astronomers Johnstone Stoney and A.M.W. Downing showed in principle how to predict meteor storms. ... The formation of dust trails and the main features of their evolution are explained. Some Leonid dust trails are perturbed by the planets so as to result in meteor storms at the start of the 21st century. ...

Magnetic Stars, 2011, pp. ... 2008). ... The origin of magnetic fields of hot massive stars is explained by the fossil field theory, MAGNETISM OF STARS 451 1-5 Be measurements -> 1278 stars 100 N stars 6-10 Be measurements -> 80 stars 50 11-15 Be measurements -> 47 stars 0 20 40 60 80 100 120 140 160 180 The namber of individual measurements The number of individual measurements Figure 1: The number of stars in a single bin versus the number of individual Be determinations for a single star. ...

... Using the uvby -photometry and proper motion data for about 5500 F stars within 80 pc from the Sun, we have studied velocity ellipsoid parameters and obtained the following results. 1) The sizw of all wllipsoid semiaxes increase systematically for groups of stars with the decrease of both temperature (at constant metallicity) and metallicity (at constant temperature). ... As a result, each of the three parameters - temperature, metallicity and velocity dispersion - is an age indicator. ...

... We measured these galaxies individually, and they are distinguished in our list by the suffixes a, b, c,... in order of increasing J2000 right ascension. ... The first column contains the UGC catalog number, to which we have added lower-case suffixes a, b, c,\dots in order of increasing J2000 right ascension to distinguish individual galaxies in groups. ... The third column lists the degrees, arcminutes, and arcseconds of J2000 declination plus the rms uncertainty in arcseconds. ...

... Future seminars . ... Nonlinear theory of mirror (diamagnetic) instability near its excitation threshol d " . ... It is demonstrated that near threshold of mirror instability the main contribution to the quadratic nonlinearity is connected with perpendicular pressure. We derive the three-dimensional equation which describes the weakly nonlinear behavior of the system. ... As a consequence the corresponding free energy decreases in time providing a blow-up appearance of magnetic holes. ...

Magnification (Power) And Using Eyepieces . ... To determine power in a telescope, divide the focal length of the telescope by the focal length of the eyepiece. By exchanging an eyepiece of one focal length for another, you can increase or decrease the power of the telescope. For example, a 25mm eyepiece used on a telescope with a 1000mm focal length would yield a power of 40x (1000 / 25 = 40) and a 10mm eyepiece used on the same telescope would yield a power of 100x (1000 / 10 = 100). ...

TD-P20)< Nonlinear dynamics of hybrid Josephson junction with an oxide antiferromagnetic interlayer Karen Y. Constantinian, Gennady A. Ovsyannikov, Yulii V. Kislinski, Anton V. Shadrin, Igor V. Borisenko, Philippe V. Komissinskiy, Jesper Mygind and Dag Winkler Abstract-- Microwave dynamics of Nb/Au/CaSrCuO/YBaCuO hybrid Josephson junctions were studied under mm wave probe signals. Oscillating with microwave power integer and half-integer Shapiro steps were observed. ...

... We have mapped the central region of the spiral galaxy NGC 1808 in the 12CO J=1-0, J=2-1, J=3-2 lines and measured 13CO J=1-0, J=2-1, C18O J=1-0, HCN J=1-0 and an upper limit on CS J=2-1 at the central position. ... The line intensity ratios indicate that the central molecular gas of NGC 1808 is in a state of high excitation compared with giant molecular clouds in the disk of the Milky Way. ... A simple estimate of the pressure felt by these clouds leads to further constrains on their properties. ...

Find Similar Abstracts . ... Magnetic field of a conducting fluid in two-dimensional motion . Authors: . ... 78, Mar. 1980, p. 980-986. ... 03/1980 . ... This result makes it possible to classify dynamo solutions in relation to the magnetic Reynolds number. Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

Observations of stellar magnetic fields is a powerful method to study of different non-stationary effects in our Galaxy and behavior of plasma under astrophysical conditions. ... Investigations of stellar magnetism by means of Zeeman measurements of polarized spectra of different stars are one of the most significant observational programme on the 6-m telescope BTA of our Observatory. ... Laboratory for the Stellar Magnetism Study . ... Laboratory for the Stellar Magnetism Study of SAO of the RAS . ...

... A Convex Hull Peeling Depth Approach to Nonparametric Massive Multivariate Data Analysis with Applications . Abstract: We explore the convex hull peeling process to develop empirical tools for statistical inferences on multivariate massive data. ... We define the convex hull peeling depth, which enables to order multivariate data. ... In addition to these empirical descriptive statistics, we find a few methodologies to separate multivariate outliers in massive data sets. ... Presentation [.pdf] . ...

... As modern observatories evolve to production units delivering data products and calibrated scientific data to the end users, new challenges arise in assessing the quality of data products. ... Taking the analogy of speed control on a motorway we can describe the system as a device (radar) collecting measurements of the system performance (passing cars). ... One of the direct applications of quality control is the verification of instrument performance based on the analysis of calibration exposures. ...

Abstract -- Abundances of heavy elements decreases with increasing galactocentric distance almost in all disk galaxies. ... To explain this gradient in young objects and in the interstellar gas one has to assume that a typical disk galaxy is an open system, i.e. it expels some synthesized heavy elements into the circumgalactic space and/or accretes intergalactic gas with zero metallicity, with rates of both processes depending on the galactocentric distance. ...

Galileo showed convincingly that heavy objects fell no faster that light ones. ... If an iron ball was pulled down with a much greater force than a wooden one of the same size, why didn't it fall any faster? ... 1) It is harder to lift. ... It is the fact that the loaded wagon has a greater mass that gives it a larger inertia , a larger tendency to oppose any change in its state of rest or of constant motion in a straight line. ... One important quantity was the body mass of the astronauts. ...

... We apply Multichannel Singular Spectrum Analysis (MSSA, or extended EOF) technique to filter GRACE data and separate the principal components (PCs) of different periods. We performed data averaging over the large river basins of Russia. ... In every point ij on the map we have time series Aij(tk) of length N. The trajectory matrix for every XAij should be build and incorporated into large block matrix X as follows: X Aij Aij (t0 ) Aij (t1 ) .. ... Sum of PCs 1-10 for particular rivers basins. ...

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Magnetic fields in massive stars . ... Observing Facilities . ... Data Handling and Products . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... While magnetic fields in the sun and solar-like stars have been studied intensively, very little is yet known about their existence, origin and role in massive stars, like O and Wolf-Rayet stars. ...

. by . E. Oliva, A. Marconi, R. Maiolino, L. Testi, et al. We report 0.9-1.4um spectroscopic observations of NGC1068 collected during the commissioning phase of the near infrared camera spectrometer (NICS) of the Telescopio Nazionale Galileo (TNG). These yielded the first extragalactic measurement of PII (1.188um) line emission. In the central 0.75"x2" the FeII/PII line-intensity ratio is close to unity, similar to that measured in the Orion bar and a factor of . Mantained by: Leonardo Testi .