Results 51 to 60 of about 36,997 (297)

X-ray Emission from Extragalactic Jets [PDF]

, 2006
This review focuses on the X-ray emission processes of extra-galactic jets on scales resolvable by the sub arcsec resolution of the Chandra X-ray Observatory. It is divided into 4 parts.
Chiaberge M, Curtis HD, D.E. Harris, Henric Krawczynski, Riley JM, Tavecchio F, Tavecchio F   +6 more
core   +2 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

55% Efficient High-Power Multijunction Photovoltaic Laser Power Converters for 1070 nm

Photonics
High-efficiency multijunction laser power converters are demonstrated for the first time at high power for optical inputs around 1070 nm. The InP-based photovoltaic power-converting III–V heterostructures are designed with eight lattice-matched InGaAsP ...
Simon Fafard, Denis Masson
doaj   +1 more source

Unified Schemes for Radio-Loud Active Galactic Nuclei

, 1995
The appearance of active galactic nuclei (AGN) depends so strongly on orientation that our current classification schemes are dominated by random pointing directions instead of more interesting physical properties.
Padovani, Paolo, Urry, C. Megan
core   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Fermi Large Area Telescope Observations of Misaligned AGN [PDF]

, 2010
Analysis is presented on 15 months of data taken with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope for 11 non-blazar AGNs, including 7 FRI radio galaxies and 4 FRII radio sources consisting of 2 FRII radio galaxies and 2 steep ...
A. A. Abdo, A. Bouvier, A. Brez, A. Cannon, A. Celotti, A. Chekhtman, A. de Angelis, A. Makeev, A. Morselli, A. Okumura, A. P. Waite, A. Reimer, A. S. Johnson, A. Sander, A. Tramacere, A. W. Borgland, A. W. Chen, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Aloy, Attridge, Atwood, B. Berenji, B. L. Winer, B. Lott, Bennett, Burgess, Burgess, Böttcher, Böttcher, C. C. Cheung, C. Cecchi, C. D. Dermer, C. Favuzzi, C. Monte, C. Sgrò, Cheung, Chiaberge, Chiaberge, Chiaberge, D. Bastieri, D. F. Torres, D. Gasparrini, D. Hadasch, D. Horan, D. J. Suson, D. J. Thompson, D. Paneque, D. Parent, D. S. Davis, D. Sanchez, Dermer, E. Bonamente, E. C. Ferrara, E. Cavazzuti, E. Charles, E. D. Bloom, E. do Couto e Silva, E. Hays, E. J. Siskind, E. Nuss, E. Orlando, E. Torresi, F. de Palma, F. Gargano, F. Giordano, F. Longo, F. Loparco, F. Piron, F. W. Stecker, Fanaroff, Finke, G. A. Caliandro, G. Barbiellini, G. Godfrey, G. Jóhannesson, G. M. Madejski, G. Malaguti, G. Migliori, G. Spandre, G. Tosti, Georganopoulos, Giroletti, Grandi, H. F.-W. Sadrozinski, H. Katagiri, H. Takahashi, Hardcastle, Harris, Harris, Hartman, Hartman, I. A. Grenier, I. Nestoras, I. V. Moskalenko, J. B. Thayer, J. Ballet, J. Bregeon, J. Chiang, J. Cohen-Tanugi, J. Conrad, J. D. Scargle, J. E. Grove, J. E. McEnery, J. F. Ormes, J. G. Thayer, J. H. Panetta, J. Kataoka, J. Knödlseder, J. Lande, J. M. Casandjian, J. P. Norris, J. Vandenbroucke, Jackson, K. Bechtol, K. S. Wood, Kataoka, Komatsu, L. Baldini, L. C. Reyes, L. Guillemot, L. Latronico, Laing, Laing, M. Ackermann, M. Ajello, M. Brigida, M. E. Monzani, M. Frailis, M. Giroletti, M. Hayashida, M. Kuss, M. Lemoine-Goumard, M. Llena Garde, M. N. Lovellette, M. N. Mazziotta, M. Naumann-Godo, M. Pepe, M. Persic, M. Pesce-Rollins, M. Razzano, M. Roth, M. S. Jackson, M. S. Strickman, M. Villata, M. Ziegler, Marshall, Mattox, Morganti, Mukherjee, N. Gehrels, N. Giglietto, N. Omodei, N. Vilchez, Neronov, O. Reimer, P. A. Caraveo, P. Bruel, P. D. Smith, P. F. Michelson, P. Fortin, P. Fusco, P. Giommi, P. Grandi, P. L. Nolan, P. Lubrano, P. S. Drell, P. Spinelli, P. Wang, R. A. Cameron, R. Bellazzini, R. Buehler, R. Claus, R. D. Blandford, R. Dubois, R. E. Hughes, R. Rando, S. Buson, S. Carrigan, S. Ciprini, S. Colafrancesco, S. Germani, S. Guiriec, S. J. Fegan, S. Murgia, S. Rainò, S. Razzaque, S.-H. Lee, Sowards-Emmerd, Stawarz, Stawarz, Stawarz, Swain, T. A. Porter, T. Glanzman, T. H. Burnett, T. J. Brandt, T. Kamae, T. L. Usher, T. Mizuno, T. Ohsugi, T. Tanaka, T. Ylinen, V. Pelassa, V. Vasileiou, V. Vitale, W. McConville, W. Mitthumsiri, W. N. Johnson, Wilkinson, Y. Fukazawa, Y. Uchiyama, Z. Yang, Ö. Çelik, Ł. Stawarz   +218 more
core   +4 more sources

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Probing Evolution of Long Gamma-Ray Burst Properties through Their Cosmic Formation History

The Astrophysical Journal
The astrophysics of long gamma-ray burst (LGRB) progenitors as well as possible cosmological evolution in their properties still poses many open questions.
Nikita S. Khatiya, Maria Giovanna Dainotti, Aditya Narendra, Dhruv S. Bal, Aleksander Ł. Lenart, Dieter H. Hartmann   +5 more
doaj   +1 more source

65% Efficient Multijunction Photovoltaic Laser Power Converters Operating over 150 W/cm²

Photonics
Multijunction laser power converters are demonstrated for the first time with high efficiencies for average optical irradiances exceeding 150 W/cm2. The GaAs-based photovoltaic power converting III-V heterostructures are designed with six GaAs subcells ...
Simon Fafard, Denis Masson
doaj   +1 more source

The black hole fundamental plane from a uniform sample of radio and X-ray emitting broad line AGNs

, 2006
We derived the black hole fundamental plane relationship among the 1.4GHz radio luminosity (L_r), 0.1-2.4keV X-ray luminosity (L_X), and black hole mass (M) from a uniform broad line SDSS AGN sample including both radio loud and radio quiet X-ray ...
Akritas M. G., Brunner H., Min‐Zhi Kong, Ran Wang, Shakura N. I., Xue‐Bing Wu, Yuan W.   +6 more
core   +1 more source