Results 11 to 20 of about 33,443 (166)

Ultraviolet Imagery of NGC 6752: A Test of Extreme Horizontal Branch Models [PDF]

, 1996
We present a 1620 A image of the nearby globular cluster NGC 6752 obtained with the Ultraviolet Imaging Telescope (UIT) during the Astro-2 mission of the Space Shuttle Endeavour in 1995 March.
Allen V. Sweigart, Andrew M. Smith, Buonanno R., Cacciari C., Caloi V., Castellani M., Morton S. Roberts, Ralph C. Bohlin, Robert W. O'Connell, Susan G. Neff, Sweigart A. V., Theodore P. Stecher, Wayne B. Landsman   +12 more
core   +3 more sources

Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy

Nature Communications, 2016
By virtue of strong spin-orbit coupling, a current-carrying heavy metal may generate a torque on the magnetization of an interfaced ferromagnetic metal.
Peng Li, Tao Liu, Houchen Chang, Alan Kalitsov, Wei Zhang, Gyorgy Csaba, Wei Li, Daniel Richardson, August DeMann, Gaurab Rimal, Himadri Dey, J. S. Jiang, Wolfgang Porod, Stuart B. Field, Jinke Tang, Mario C. Marconi, Axel Hoffmann, Oleg Mryasov, Mingzhong Wu   +18 more
doaj   +1 more source

The Solar Radius in the EUV during the Cycle XXIII [PDF]

, 2007
Aims. To determine the solar transition region and coronal radius at EUV wavelengths and its time evolution during Solar Cycle XXIII. Methods. We use daily 30.4 and 17.1 nm images obtained by the Extreme Ultraviolet Imager (EIT) aboard the SoHO ...
A. C. Varela Saraiva, Andretta, Auchère, Auchère, C. G. Giménez de Castro, C. L. Selhorst, Canny, Costa, Cowan, Emilio, Fontenla, Fontenla, Fontenla, Fontenla, J. E. R. Costa, Johannesson, Jordan, Kuhn, Moses, Pietarila, Selhorst, Selhorst, Sterling, Vernazza, Vernazza, Vernazza, Withbroe, Zhang, Zirin   +28 more
core   +2 more sources

Far-Ultraviolet Radiation from Elliptical Galaxies [PDF]

, 1999
Far-ultraviolet radiation is a ubiquitous, if unanticipated, phenomenon in elliptical galaxies and early-type spiral bulges. It is the most variable photometric feature associated with old stellar populations.
Bender R, Bertelli G, Bica E, Bica E, Blöcker T, Bressan A, Brosch N, Caloi V, Cappellari M, Castellani M, de Boer KS, de Boer KS, Deharveng JM, Deharveng JM, Deharveng JM, Deharveng JM, Deharveng JM, Donas J, Hills JG, Kaluzny J, Longo G, Martin C, Milliard B, Nesci R, Nørgaard-Nielsen HU, O'Connell DJK, Renzini A, Rifatto A, Rifatto A, Robert W. O'Connell, Rocca-Volmerange B, Rocca-Volmerange B, Sweigart AV, Tantalo R, Thejll P, Tinsley BM   +35 more
core   +3 more sources

The ALFALFA "Almost Darks" Campaign: Pilot VLA HI Observations of Five High Mass-to-Light Ratio Systems [PDF]

, 2014
We present VLA HI spectral line imaging of 5 sources discovered by ALFALFA. These targets are drawn from a larger sample of systems that were not uniquely identified with optical counterparts during ALFALFA processing, and as such have unusually high HI ...
Adams, Elizabeth A. K., Cannon, John M., Giovanelli, Riccardo, Hallenbeck, Gregory, Haynes, Martha P., Janowiecki, Steven, Jones, Michael, Józsa, Gyula I. G., Koopmann, Rebecca A., Leisman, Lukas, Martinkus, Charlotte P., Nichols, Nathan, Papastergis, Emmanouil, Rhode, Katherine L., Salzer, John J., Troischt, Parker   +15 more
core   +2 more sources

Research in extreme ultraviolet and far ultraviolet astronomy [PDF]

Instruments designed to explore different aspects of far and extreme ultraviolet cosmic radiation were studied. The far ultraviolet imager (FUVI) was flown on the Aries sounding rocket. Its unique large format 75mm detector mapped out the far ultraviolet
Labov, S. E.
core   +7 more sources

Extreme and Far Ultraviolet Astronomy from Voyagers 1 and 2 [PDF]

International Astronomical Union Colloquium, 1990
AbstractThe instrumental characteristics, observational capabilities and scientific results of the Voyager 1 and 2 ultraviolet spectrometers are reviewed. These instruments provide current and ongoing access to low resolution spectra for a wide variety of astronomical sources in the 500 to 1700 Å band.
openaire   +1 more source

The status and future of EUV astronomy

, 2013
The Extreme Ultraviolet wavelength range was one of the final windows to be opened up to astronomy. Nevertheless, it provides very important diagnostic tools for a range of astronomical objects, although the opacity of the interstellar medium restricts ...
Barstow, M. A., Casewell, S. L., Holberg, J. B., Kowalski, M. P.   +3 more
core   +1 more source

UV and EUV Instruments

, 2010
We describe telescopes and instruments that were developed and used for astronomical research in the ultraviolet (UV) and extreme ultraviolet (EUV) regions of the electromagnetic spectrum.
A. Boggess, A. Boksenberg, A. Gregorio, A. Vuillemin, A.A. Boyarchuk, A.A. Boyarchuk, A.F. Davidsen, A.L. Broadfoot, A.M. Smith, A.M. Zvereva, B. Valcu, B.G. Taylor, C. de Jager, C. Morales, C.B. Opal, C.S. Weller, D.C. Martin, D.J. Sahnow, E. Pfeffermann, E.B. Jenkins, E.G. Schmidt, E.J. Korpela, F. Paresce, F.G. Ocallaghan, G.A. Gurzadyan, G.A. Gurzadyan, G.G. Spear, G.M. Tovmasyan, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, H.W. Moos, H.W. Moos, J. Barnstedt, J. Edelstein, J. Murthy, J. Murthy, J.B. Pearce, J.B. Rogerson, J.D. Fix, J.J. Bloch, J.W. Kruk, K.G. Henize, K.H. Nordsieck, K.O. Mason, L. Strüder, L.H. Aller, M. Hurwitz, M. Hurwitz, M. Hurwitz, M. Hurwitz, M. Laget, M. Maucherat-Joubert, M.A. Barstow, M.C. Weisskopf, M.R. Molnar, N. Gehrels, N.A. Dimov, N.A. Dimov, N.A. Dimov, N.A. Dimov, N.E. White, P. Morissey, P.R. Wesselius, R. Giacconi, R. Stalio, R. Wilson, R.C. Bless, R.C. Henry, R.J. van Duinen, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, T.P. Stecher, V.G. Kurt, V.G. Kurt, W. Tobin, W.G. Fastie, Y. Kondo   +83 more
core   +1 more source

The extreme ultraviolet excess emission in five clusters of galaxies revisited [PDF]

, 2002
Evidence for excess extreme ultraviolet (EUV) emission over a tail of X-ray gas bremsstrahlung emission has been building up recently, but in some cases remains controversial, mostly due to the moderate quality of the EUV data.
Anscombe, Atoyan, Berghöfer, Berghöfer, Bonamente, Bonamente, Bowyer, Bowyer, Bowyer, Briel, Brunetti, Dixon, E. Slezak, Ensslin, Ensslin, F. Durret, Fabian, Hughes, Hwang, Hwang, Kaastra, Lieu, Lieu, Lieu, Lieu, Lieu, Lieu, M. Bonamente, Mallat, Mewe, Mewe, Mittaz, Morrison, R. Lieu, Rué, S. Dos Santos, Sarazin, Siddiqui, Snowden   +38 more
core   +3 more sources