Search Results - "speed of light"

Limits on an energy dependence of the speed of light from a flare of the active galaxy PKS 2155-304 by Aharonian, F., Akhperjanian, A., Barres de Almeida, U., Bazer-Bachi, A., Becherini, Y., Behera, B., Beilicke, M., Benbow, W., Bernlöhr, K., Boisson, C., Bochow, A., Borrel, V., Braun, I., Brion, E., Brucker, J., Brun, P., BüHLER, R., Bulik, T., Büsching, I., Boutelier, T., Carrigan, S., Chadwick, P., Charbonnier, A., Chaves, R., Chounet, L., Clapson, A., Coignet, G., Costamante, L., Dalton, M., Degrange, B., Deil, C., Dickinson, H., Djannati-Ataï, A., Domainko, W., Drury, L., Dubois, F., Dubus, G., Dyks, J., Egberts, K., Emmanoulopoulos, D., Espigat, P., Farnier, C., Feinstein, F., Fiasson, A., Förster, A., Fontaine, G., Füßling, M., Gabici, S., Gallant, Y., Gerard, L., Giebels, B., Glicenstein, J., Glück, B., Goret, P., Hadjichristidis, C., Häuser, D., Hauser, M., Heinz, S., Heinzelmann, G., Henri, G., Hermann, G., Hinton, J., Hoffmann, A., Hofmann, W., Holleran, M., Hoppe, P., Horns, D., Jacholkowska, A., De Jager, O., Jung, I., Katarzynski, K., Kaufmann, S., Kendziorra, E., Kerschhaggl, M., Khangulyan, D., Khélifi, B., Keogh, D., Komin, N., Kosack, K., Lamanna, G., Lenain, J., Lohse, T., Marandon, V., Martin, J., Martineau-Huynh, O., Marcowith, A., Maurin, D., McComb, T., Medina, C., Moderski, R., Moulin, E., Naumann-Godo, M., de Naurois, M., Nedbal, D., Nekrassov, D., Niemiec, J., Nolan, S., Ohm, S., Olive, J., de Oña Wilhelmi, E., Orford, K., Osborne, J., Ostrowski, M., Panter, M., Pedaletti, G., Pelletier, G., Petrucci, P., Pita, S., Pühlhofer, G., Punch, M., Quirrenbach, A., Raubenheimer, B., Raue, M., Rayner, S., Renaud, M., Rieger, F., Ripken, J., Rob, L., Rosier Lees, S., Rowell, G., Rudak, B., Ruppel, J., Sahakian, V., Santangelo, A., Schlickeiser, R., Schöck, F., Schröder, R., Schwanke, U., Schwarzburg, S., Schwemmer, S., Shalchi, A., Skilton, J., Sol, H., Spangler, D., Stawarz, L., Steenkamp, R., Stegmann, C., Superina, G., Tam, P., Tavernet, J., Terrier, R., Tibolla, Omar, van Eldik, C., Vasileiadis, G., Venter, C., Vialle, J., Vincent, P., Vivier, M., Volk, H., Volpe, F., Wagner, S., Ward, M., Zdziarski, A., Zech, A.

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Cosmological tests of coupled Galileons by Brax, Philippe, Burrage, Clare, Davis, Anne-Christine, Gubitosi, Giulia

“…This leads to large variations of particle masses and the speed of light which are not compatible with observations. …”
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Detecting Lorentz violations with gravitational waves from black hole binaries by Sotiriou, Thomas P.

“…Hence, a smoking-gun observation of Lorentz symmetry breaking would be the direct detection of scalar waves that travel at a speed other than the speed of the standard gravitational wave polarizations or the speed of light. Interestingly, in known Lorentz-breaking gravity theories the difference between the speeds of scalar and tensor waves is virtually unconstrained, whereas the difference between the latter and the speed of light is already severely constrained by the coincident detection of gravitational waves and gamma rays from a binary neutron star merger.…”
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Time scales and their characteristics by Suhandri, Hendy Fitrian, Adil, Irdam, A. Khalifa, Nasradeen, Saptari, Asep Yusup

“…He shared his view about the problem of the classical understanding of time, in the context of electricity and magnetism, which can be resolved by invoking a method of synchronizing clocks using the constant speed of light in a vacuum as the maximum signal velocity.…”
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The speed of Galileon gravity by Brax, Philippe, Burrage, Clare, Davis, Anne-Christine

“…For such models with gravitons propagating faster than the speed of light, the gravitons become potentially unstable and could decay into photon pairs. …”
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Hořava gravity after GW170817 by Emir Gümrükçüoğlu, A., Saravani, Mehdi, Sotiriou, Thomas P.

“…The recent detection of gravitational wave GW170817 has placed a severe bound on the deviation of the speed of gravitational waves from the speed of light. We explore the consequences of this detection for Hořava gravity.…”
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Development of speed trap programming model using microcontroller by Abd Rahman, Zulkifli, Wan Hasan, Wan Zuha, Hasan, Mohd Khair

“…This technology, for example laser speed gun emits a very narrow, intense beam of "invisible' light. The speed of light is a known constant (approximately 300 OOO-km persecond). …”
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The promise of synchrotron radiation in medical science by Sun, Zhonghua

“…Essentially it accelerates electrons to almost the speed of light, where they have a very high energy level. …”
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Watching Battlestar Galactica in Australia and the Tyranny of Digital Distance by Leaver, Tama

“…In an era where communication technologies can move digital media at close to the speed of light, this paper explores the rupture between this technical potential and the actual model by which international television screening dates are determined in Australia. …”
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Baryons in the relativistic jets of the stellar-mass black-hole candidate 4U 1630-47 by Trigo, M., Miller-Jones, James, Migliari, S., Broderick, J., Tzioumis, T.

“…We argue that these lines arise from baryonic matter in a jet travelling at approximately two-thirds the speed of light, thereby establishing the presence of baryons in the jet. …”
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Dark halo microphysics and massive black hole scaling relations in galaxies by Saxton, C., Soria, Roberto, Wu, K.

“…The equipotential where the escape velocity approaches the speed of light defines the horizon of the BH. We find that the BH mass (m•) depends on the DM entropy, when the effective thermal degrees of freedom (F) are specified. …”
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Late-outburst radio flaring in SS Cyg and evidence for a powerful kinetic output channel in cataclysmic variables by Fender, R., Bright, J., Mooley, K., Miller-Jones, James

“…From this we can infer that the synchrotron-emitting plasma was expanding at about 1 per cent of the speed of light, and at peak had a magnetic field of order 1 G and total energy content ≥1033 erg. …”
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Study on pollutants formation under knocking combustion conditions using an optical single cylinder SI research engine by Karvountzis-Kontakiotis, Apostolos, Vafamehr, Hassan, Cairns, Alasdair, Peckham, Mark

“…In this study, an optical single cylinder SI research engine and fast response analyzers were employed to experimentally correlate knocking combustion characteristics with cyclic resolved emissions from cycle to cycle. High-speed natural light photography imaging and simultaneous in-cylinder pressure measurements were obtained from the optical research engine to interpret emissions formation under knocking combustion. …”
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Opto-acoustic thin-film transducers for imaging of Brillouin oscillations on living cells by Perez Cota, Fernando

“…In any given media, the speed of sound is considerably slower than speed of light, and the exploration of the acoustic regime in the GHz range gives access to very short acoustic wavelengths. …”
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Search for relativistic magnetic monopoles with the AMANDA-II neutrino telescope: The IceCube Collaboration by Abbasi, R., Abdou, Y., Abu-Zayyad, T., Adams, J., Aguilar, J., Ahlers, M., Andeen, K., Auffenberg, J., Bai, X., Baker, M., Barwick, S., Bay, R., Bazo Alba, J., Beattie, K., Beatty, J., Bechet, S., Becker, J., Becker, K., Benabderrahmane, M., BenZvi, S., Berdermann, J., Berghaus, P., Berley, D., Bernardini, E., Bertrand, D., Besson, D., Bissok, M., Blaufuss, E., Boersma, D., Bohm, C., Böser, S., Botner, O., Bradley, L., Braun, J., Buitink, S., Carson, Michael, Chirkin, D., Christy, B., Clem, J., Clevermann, F., Cohen, S., Colnard, C., Cowen, D., D'Agostino, M., Danninger, M., Davis, J., de Clercq, C., Demirörs, L., Depaepe, O., Descamps, F., Desiati, P., de Vries-Uiterweerd, G., DeYoung, T., Díaz-Vélez, J., Dierckxsens, M., Dreyer, J., Dumm, J., Duvoort, M., Ehrlich, R., Eisch, J., Ellsworth, R., Engdegård, O., Euler, S., Evenson, P., Fadiran, O., Fazely, A., Feusels, T., Filimonov, K., Finley, C., Foerster, M., Fox, B., Franckowiak, A., Franke, R., Gaisser, T., Gallagher, J., Geisler, M., Gerhardt, L., Gladstone, L., Glüsenkamp, T., Goldschmidt, A., Goodman, J., Grant, D., Griesel, T., Groß, A., Grullon, S., Gurtner, M., Ha, C., Hallgren, A., Halzen, F., Han, K., Hanson, K., Helbing, K., Herquet, P., Hickford, S., Hill, G.

“…The non-observation of a monopole signal in data collected during the year 2000 improves present experimental limits on the flux of relativistic magnetic monopoles: Our flux limit varies between 3.8 × 10-17 cm-2 s-1 sr-1 (for monopoles moving at the vacuum speed of light) and 8.8 × 10-16 cm-2 s-1 sr-1 (for monopoles moving at a speed ß=v/c=0.76, just above the Cherenkov threshold in ice). …”
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An accurate characterization of different water properties using resonant method for underwater communication activity by Salwa, Awang Akbar, Ahmad Syahiman, Mohd Shah, Airul Sharizli, Abdullah, Nurhafizah, Abu Talip, Sabira, Khatun, Syamimi Mardiah, Shaharum, Mohamad Shaiful, Abdul Karim

“…The velocity of signal propagates in underwater is different from the speed of light in free space and closely related to complex permittivity. …”
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Radiation-Induced Synthesis and Characterization of Copper and Chromium Nanoparticles by Mohd Nor, Najah Syamirah

“…The energy of conduction band of Cu and Cr nanoparticles was determined by the photon energy equation, Ecb = hc/maxwhere h is Planck’s constant, c is the speed of light and max is the wavelength value of maximum intensity of surface plasmon peaks. …”
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Improved Residual Distributionschemes For The Maxwell’s by Sien, Neoh Soon

“…The wireless telecommunication is all about the radiation of electromagnetic waves, and the optical waveguide transmits signals at the speed of light. The aspiration of this work is to introduce the vertex-based residual distribution(RD) schemes for Maxwell’s equations, which is time-explicit and still secondorder-accurate. …”
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Sikap penunggang motosikal dan implikasinya terhadap kempen keselamatan jalan raya by Wong, Su Jane

“…Among some of the common causes of road accidents are speeding, traffic light offences, tailing another vehicle in close proximity, carelessness ofthe rider and others. …”
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