Results 21 to 30 of about 781,232 (282)

Fermi Large Area Telescope View of the Core of the Radio Galaxy Centaurus A [PDF]

, 2010
We present gamma-ray observations with the LAT on board the Fermi Gamma-Ray Telescope of the nearby radio galaxy Centaurus~A. The previous EGRET detection is confirmed, and the localization is improved using data from the first 10 months of Fermi science
A. Abdo, A., A. Caliandro, G., A. Cameron, R., A. Grenier, I., A. Moiseev, A., Ackermann, Markus, Ajello, Marco, B. Atwood, W., B. Focke, W., B. Thayer, J., Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Bonamente, E., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, Buehler, R., Buson, S., C. Cheung, C., Cannon, A., Caraveo, P. A., Carrigan, S., Cavazzuti, E., Cecchi, C., Celik, O., Charles, E., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Colafrancesco, S., Conrad, J., Costamante, L., D. Blandford, R., D. Bloom, E., D. Dermer, C., D. Scargle, J., D. Smith, P., De Angelis, A., De Palma, F., Do Couto E Silva, E., Dubois, R., Dumora, D., E. Grove, J., E. Hughes, R., E. Mcenery, J., E. Monzani, M., F. Michelson, P., F. Ormes, J., F. Torres, D., F.-W. Sadrozinski, H., Falcone, A., Farnier, C., Favuzzi, C., Finke, J., Fortin, P., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., G. Thayer, J., Gargano, F., Gasparrini, D., Gehrels, N., Georganopoulos, M., Germani, S., Giebels, B., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grandi, P., Grondin, M.-H., Guillemot, L., Guiriec, S., H. Panetta, J., Hadasch, D., Hase, Hayo, Hayashida, M., Hays, E., Horan, D., Itoh, R., J. Brandt, T., J. Fegan, S., J. Johnson, T., J. Siskind, E., J. Suson, D., J. Thompson, D., Johannesson, G., K. Harding, A., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kishishita, T., Knodlseder, J., Kuss, M., L. Nolan, P., L. Usher, T., L. Winer, B., Lande, J., Latronico, L., Lee, S.-H., Lemoine-Goumard, M., Llena Garde, M., Longo, F., Loparco, F., Lott, B., Lubrano, P., M. Baughman, B., M. Casandjian, J., Makeev, A., Mcconville, W., Mitthumsiri, W., Mizuno, T., Monte, C., Morselli, A., Muller, C.,, Murgia, S., N. Johnson, W., N. Lovellette, M., N. Mazziotta, M., Nakamori, T., Naumann-Godo, M., Nuss, E., Ohno, M., Ohsugi, T., Ojha, R., Okumura, A., Omodei, N., Orlando, E., Ozaki, M., P. Norris, J., P. Waite, A., Pagani, C., Paneque, D., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Plotz, C., Porter, T.A., R. Cominsky, L., Raino, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Ripken, J., Ritz, S., Roth, M., Ryde, F., S. Davis, D., S. Drell, P., S. Jackson, M., S. Johnson, A., S. Strickman, M., S. Wood, K., Sanchez, D., Sander, A., Sgro, C., Spandre, G., Spinelli, P., Starck, Jean-Luc, Stawarz, L., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Tibaldo, L., Tosti, G., Tramacere, A., Uchiyama, Y., V. Moskalenko, I., Vandenbroucke, J., Vasileiou, V., Vilchez, N., Vitale, V., W. Borgland, A., Wang, P., Y. Rodriguez, A., Yang, Z., Ylinen, T., Ziegler, M.   +197 more
core   +4 more sources

Proposed Sandia frequency shift for anti-islanding detection method based on artificial immune system

Alexandria Engineering Journal, 2018
Sandia frequency shift (SFS) is one of the active anti-islanding detection methods that depend on frequency drift to detect an islanding condition for inverter-based distributed generation.
A.Y. Hatata, El-H. Abd-Raboh, Bishoy E. Sedhom   +2 more
doaj   +1 more source

An Integrated Framework for Sensing Radio Frequency Spectrum Attacks on Medical Delivery Drones

, 2020
Drone susceptibility to jamming or spoofing attacks of GPS, RF, Wi-Fi, and operator signals presents a danger to future medical delivery systems. A detection framework capable of sensing attacks on drones could provide the capability for active responses.
Kulp, Philip H., Mei, Nagi
core   +1 more source

Performance analysis of power system parameters for islanding detection using mathematical morphology

Ain Shams Engineering Journal, 2021
Islanding detection is imperative for the protection of distribution system supported by distributed generation. The accuracy of islanding detection technique mainly depends on the selection of suitable parameter.
Safdar Raza, Tauheed ur Rahman, Mazhar Saeed, Shahzad Jameel   +3 more
doaj   +1 more source

Solar-like oscillations in massive main-sequence stars. I. Asteroseismic signatures of the driving and damping regions [PDF]

, 2009
Motivated by the recent detection of stochastically excited modes in the massive star V1449 Aql (Belkacem et al., 2009b), already known to be a $\beta$ Cephei, we theoretically investigate the driving by turbulent convection.
A. Noels, Balmforth, Bedding, Belkacem, Belkacem, Belkacem, Belkacem, Belkacem, Cantiello, Chaplin, Christensen-Dalsgaard, de Ridder, Degroote, Dupret, Dupret, Dupret, Dziemblowski, Dziembowski, Dziembowski, Dziembowski, Dziembowski, Gautschy, Gautschy, Goldreich, Grigahcène, Iglesias, Iglesias, K. Belkacem, Lighthill, M. A. Dupret, Meakin, Michel, Michel, Mordant, Moskalik, Pamyatnykh, Pamyatnykh, Pesnell, Samadi, Samadi, Samadi, Samadi, Scuflaire, Stein, Thoul   +44 more
core   +1 more source

RFMFA Technique for Islanding Detection Scheme in Integrated DG System

International Transactions on Electrical Engineering and Computer Science, 2023
EEE 1547 specifies time limits for the completion of DG interconnection tasks, and one of these tasks is the detection of islanding, which must be completed within two seconds of the task's start.
Katta Venkata Reddy, Tharun Kommaddi
doaj  

Atomic detection in microwave cavity experiments: a dynamical model [PDF]

, 2006
We construct a model for the detection of one atom maser in the context of cavity Quantum Electrodynamics (QED) used to study coherence properties of superpositions of electromagnetic modes.
C. Cohen-Tannoudji, J. G. Peixoto de Faria, M. C. Nemes, R. Rossi   +3 more
core   +2 more sources

DG System Using PFNN Controllers for Improving Islanding Detection and Power Control

Energies, 2019
In this study, an intelligent controlled distributed generator (DG) system is proposed for tracking control and islanding detection. First, a DC/AC inverter with DC power supply is adopted to emulate a DG system and control the active and reactive power ...
Kuang-Hsiung Tan, Chien-Wu Lan
doaj   +1 more source

Quench Detection and Protection for High-Temperature Superconductor Accelerator Magnets

Instruments, 2021
High-temperature superconductors (HTS) are being increasingly used for magnet applications. One of the known challenges of practical conductors made with high-temperature superconductor materials is a slow normal zone propagation velocity resulting from ...
Maxim Marchevsky
doaj   +1 more source

A transiting planet among 23 new near-threshold candidates from the OGLE survey - OGLE-TR-182 [PDF]

, 2007
By re-processing the data of the second season of the OGLE survey for planetary transits and adding new mesurements on the same fields gathered in subsequent years with the OGLE telescope, we have identified 23 new transit candidates, recorded as OGLE-TR-
A. Shporer, A. Udalski, Bouchy, Bouchy, C. Melo, C. Moutou, Cameron, Claret, D. Minniti, D. Naef, D. Queloz, F. Bouchy, F. Pont, G. Pietrzynski, Girardi, I. Soszyński, K. Ulaczyk, Konacki, Konacki, Konacki, Kovács, Kovács, M. Gillon, M. K. Szymański, M. Kubiak, M. Mayor, M. T. Ruiz, M. Zoccali, Mandel, Mazeh, Moutou, N. C. Santos, O. Szewczyk, O. Tamuz, Pont, Pont, Pont, Pont, Pont, Pont, R. F. Diaz, S. Hoyer, S. Ramirez, S. Udry, Sahu, Santos, T. Mazeh, Tamuz, Udalski, Udalski, Udalski, Udalski, W. Gieren, Ł. Wyrzykowski   +53 more
core   +7 more sources