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Now showing items 446-465 of 761

Non-detection of previously reported transits of HD 97658b with MOST photometry

Dragomir, Diana; Matthews, Jaymie M.; Howard, Andrew W.; Antoci, Victoria; Henry, Gregory W.; Guenther, David B.; Johnson, John A.; Kuschnig, Rainer; Marcy, Geoffrey W.; Moffat, Anthony F. J. (American Astronomical Society, 2012-11-10)

The radial velocity-discovered exoplanet HD 97658b was recently announced to transit, with a derived planetary radius of 2.93 ± 0.28 R⊕. As a transiting super-Earth orbiting a bright star, this planet would make an attractive ...
Non-local thermodynamic equilibrium 1.5D modeling of red giant stars

Young, Mitchell E.; Short, C. Ian (Christopher Ian), 1965- (IOP Publishing, 2014-05-20)

Spectra for two-dimensional (2D) stars in the 1.5D approximation are created from synthetic spectra of one-dimensional (1D) non-local thermodynamic equilibrium (NLTE) spherical model atmospheres produced by the PHOENIX ...
Nonradial p-modes in the G9.5 giant [epsilon] Ophiuchi? Pulsation model fits to MOST photometry

Kallinger, T.; Guenther, David B.; Matthews, J. M.; Weiss, W. W.; Huber, D.; Kuschnig, R.; Moffat, A. F. J.; Rucinski, S. M.; Sasselov, D. (European Southern ObservatoryEDP Sciences, 2008)

The G9.5 giant [epsilon] Oph shows evidence of radial p-mode pulsations in both radial velocity and luminosity. We re-examine the observed frequencies in the photometry and radial velocities and find a best model fit to ...
Nonthermal X-ray emission: an alternative to cluster cooling flows?

McCarthy, Ian G.; West, Michael J.; Welch, Gary A. (American Astronomical SocietyIOP Publishing, 2002-03-10)

We report the results of experiments aimed at reducing the major problem with cooling flow models of rich cluster X-ray sources, i.e., the fact that most of the cooled gas or its products have not been found. Here we show ...
A novel demonstration of induced EMF

Lonc, William, 1930- (American Association of Physics Teachers, 1993-01)

There is no abstract available for this article.
A novel method for the measurement of half-lives and decay branching ratios of exotic nuclei

Miskun, Ivan; Dickel, Timo; Mardor, Israel; Hornung, Christine; Amanbayev, Daler; San Andres, Samuel Ayet; Bergmann, Julian; Ebert, Jens; Geissel, Hans; Gorska, Magdalena; Greiner, Florian; Haettner, Emma; Plaß, Wolfgang R.; Purushothaman, Sivaji; Scheidenberger, Christoph; Rink, Ann-Kathrin; Weick, Helmut; Bagchi, Soumya; Constantin, Paul; Kaur, Satbir; Lippert, Wayne; Mei, Bo; Moore, Iain; Otto, Jan-Hendrick; Pietri, Stephane; Pohjalainen, Ilkka; Prochazka, Andrej; Rappold, Christophe; Reiter, Moritz P.; Tanaka, Yoshiki K.; Winfield, John S. (SpringerSpringer Berlin Heidelberg, 2019-09-04)

A novel method for simultaneous measurement of masses, Q-values, isomer excitation energies, half-lives and decay branching ratios of exotic nuclei has been demonstrated. The method includes first use of a stopping cell ...
Novel Third‐Law demonstration

Lonc, William, 1930- (American Association of Physics TeachersAmerican Institute of Physics, 1995-02)

Demonstrates Newton's third law of motion in a novel way. Description of requirements; Discussion with respect to horizontal and vertical orientations of the"line of action". Low-cost demonstration..
The nuclear environment of the NLS1 Mrk 335: Obscuration of the X-ray line emission by a variable outflow

Parker, M. L.; Longinotti, A. L.; Schartel, N.; Grupe, D.; Komossa, S.; Kriss, G.; Fabian, Andrew C.; Gallo, Luigi C.; Harrison, F. A.; Jiang, J.; Kara, E.; Krongold, Y.; Matzeu, G. A.; Pinto, C.; Santos-Lleo, M. (Royal Astronomical SocietyOxford University Press, 2019-09-12)

We present XMM–Newton, NuSTAR, Swift, and Hubble Space Telescope observations of the Narrow-line Seyfert 1 galaxy Mrk 335 in a protracted low state in 2018 and 2019. The X-ray flux ...
Nuclear force imprints revealed on the elastic scattering of protons with 10C

Kumar, A.; Kanungo, R.; Calci, A.; Navratil, P.; Sanetullaev, A.; Alcorta, M.; Bildstein, V.; Christian, G.; Davids, B.; Dohet-Eraly, J.; Fallis, J.; Gallant, A. T.; Hackman, G.; Hadinia, B.; Hupin, G.; Ishimoto, S.; Krucken, R.; Laffoley, A. T.; Lighthall, J.; Miller, D.; Quaglioni, S.; Randhawa, J. S.; Rand, E. T.; Rojas, A.; Roth, R.; Shotter, A.; Tanaka, J.; Tanihata, I.; Unsworth, C. (American Physical Society, 2017-06-28)

How does nature hold together protons and neutrons to form the wide variety of complex nuclei in the Universe? Describing many-nucleon systems from the fundamental theory of quantum chromodynamics has been the greatest ...
Nuclear spallation in active galaxies

Gallo, Luigi. C.; Randhawa, J. S.; Waddell, S. G. H.; Hani, M. H.; Garcia, J. A.; Reynolds, C.S. (Oxford University Press, 2019-01-25)

A number of works point to the presence of narrow emission features at unusual energies in the X-ray spectra of active galactic nuclei or to potentially low iron abundances as possible evidence for the spallation of iron. ...
Nuclear structure research at TRIUMF

Austin, Roby Anne Elizabeth, 1974-; Garrett, P. E.; Andreyev, A.; Ball, G. C.; Bandyopadhyay, D.; Becker, J. A.; Boston, A. J.; Chakrawarthy, R. S.; Cline, D.; Cooper, R. J. (Jagiellonian University in cooperation with the Polish Academy of Arts and Sciences, 2007)

The radioactive beam laboratory at TRIUMF is currently the highest power ISOL facility in the world. Taking advantage of the high-intensity beams, major programs in nuclear astrophysics, nuclear structure, and weak interaction ...
Nucleotide diversity patterns at the DREB1 transcriptional factor gene in the genome donor species of wheat (Triticum aestivum L)

Xu, Yi; Sun, Fang-Yao; Ji, Chun; Hu, Quan-Wen; Wang, Cheng-Yu; Wu, De-Xiang; Sun, Genlou (Public Library of Science (PLOS), 2019-05-28)

Bread wheat (AABBDD) originated from the diploid progenitor Triticum urartu (AA), a relative of Aegilops speltoides (BB), and Ae. tauschii (DD). The DREB1 transcriptional factor plays key ...
The numbers of z ∼ 2 star-forming and passive galaxies in 2.5 square degrees of deep CFHT imaging

Arcila-Osejo, Liz Maria; Sawicki, Marcin, 1969- (Royal Astronomical SocietyOxford University Press, 2013-08-19)

We use an adaptation of the BzK[subscript s] technique to select ∼40 000 z ∼ 2 galaxies (to K[subscript AB] = 24), including ∼5000 passively evolving (PE) objects (to K[subscript AB] = 23), from 2.5 deg[superscript 2] of ...
The NuSTAR spectrum of Mrk 335: extreme relativistic effects within two gravitational radii of the event horizon

Parker, M. L.; Wilkins, D. R.; Fabian, A. C.; Grupe, D.; Dauser, T.; Matt, G.; Harrison, F. A.; Brenneman, L.; Boggs, S. E.; Christensen, F. E.; Gallo, Luigi C. (Oxford University Press, 2014-09-11)

We present 3–50 keV NuSTAR observations of the active galactic nuclei Mrk 335 in a very low flux state. The spectrum is dominated by very strong features at the energies of the iron line at 5–7 keV and Compton ...
Observation of large enhancements of charge exchange cross sections with neutron-rich carbon isotopes

Tanihata, I.; Terashima, S.; Kanungo, Rituparna; Ameil, F.; Atkinson, J.; Ayyad, Y.; Cortina-Gil, D.; Dillmann, I.; Estrade, Alfredo; Evdokimov, A. (Oxford University Press, 2016-04)

Production cross sections of nitrogen isotopes from high-energy (∼950 MeV per nucleon) carbon isotopes on hydrogen and carbon targets have been measured for the first time for a wide range of isotopes (A = 12 to 19). The ...
Observations of Cepheids with the MOST satellite: contrast between pulsation modes

Evans, N. R.; Szabo, R.; Derekas, A.; Szabados, L.; Cameron, C.; Matthews, J. M.; Sasselov, D.; Kuschnig, R.; Rowe, J. F.; Guenther, David B. (Oxford University Press, 2015-02)

The quantity and quality of satellite photometric data strings is revealing details in Cepheid variation at very low levels. Specifically, we observed a Cepheid pulsating in the fundamental mode and one pulsating in the ...
Observations of intensity fluctuations attributed to granulation and faculae on Sun-like stars from the Kepler mission

Gruberbauer, Michael; Karoff, C.; Campante, T. L.; Ballot, J.; Kallinger, T.; Garcia, R. A.; Caldwell, D. A.; Christiansen, J. L.; Kinemuchi, K. (American Astronomical Society, 2013-04-10)

Sun-like stars show intensity fluctuations on a number of timescales due to various physical phenomena on their surfaces. These phenomena can convincingly be studied in the frequency spectra of these stars—while the strongest ...
Of Martians, aerodynamics, and fathering the bomb [Letter]

Noerdlinger, Peter D. (American Institute of Physics, 2007-12)

This article presents a letter to the editor regarding Barton Bernstein's book review from the May 2007 issue.
On a zonal polynomial integral

Kabe, D. G.; Gupta, A. K. (Hindawi Publishing Corporation, 2003)

A certain multiple integral occurring in the studies of Beherens-Fisher multivariate problem has been evaluated by Mathai et al. (1995) in terms of invariant polynomials. However, this paper explicitly evaluates the context ...
On atom–atom 'short contact' bonding interactions in crystals

Lecomte, Claude; Espinosa, Enrique; Matta, Cherif F. (International Union of Crystallography, 2015-03)

Professor Dunitz questions the usefulness of ascribing crystalline structural stability to individual atom–atom intermolecular interactions viewed as bonding (hence stabilizing) whenever linked by a bond path. An alternative ...

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