نتایج جستجو برای: background radiation

تعداد نتایج: 1052985  

2002
Joseph Silk

I review the discovery of the temperature fluctuations in the cosmic microwave background radiation. The underlying theory and the implications for cosmology are reviewed, and I describe the prospects for future progress.

Journal: :Blood 1958
E E SCHWARTZ A C UPTON

S INCE 1920 there has been a marke(l increase in the recorded incidence of leukemia and the lymphomas. At the same time, exposure to iomiizing radiation has been shown to increase the frequency of these diseases. Consequently there is now mounting concern about tile gradually rising level of background radiation in the environment. In this paper, the incidence of leukemia and the Ivniphomnas in...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Sayaka Wakayama Yuko Kamada Kaori Yamanaka Takashi Kohda Hiromi Suzuki Toru Shimazu Motoki N Tada Ikuko Osada Aiko Nagamatsu Satoshi Kamimura Hiroaki Nagatomo Eiji Mizutani Fumitoshi Ishino Sachiko Yano Teruhiko Wakayama

We would like to thank Ferlazzo and Foray (1) for their very important comments and suggestions. We will keep in mind that “scientists should take particular care to justify their methodology and moderate their conclusions.” One concern of Ferlazzo and Foray (1) is that our control experiment entailed exposure to the ground radiation of Japan, rather than to a high natural radiation background ...

Journal: :Science 2007
J Abraham P Abreu M Aglietta C Aguirre D Allard I Allekotte J Allen P Allison C Alvarez J Alvarez-Muñiz M Ambrosio L Anchordoqui S Andringa A Anzalone C Aramo S Argirò K Arisaka E Armengaud F Arneodo F Arqueros T Asch H Asorey P Assis B S Atulugama J Aublin M Ave G Avila T Bäcker D Badagnani A F Barbosa D Barnhill S L C Barroso P Bauleo J Beatty T Beau B R Becker K H Becker J A Bellido S Benzvi C Berat T Bergmann P Bernardini X Bertou P L Biermann P Billoir O Blanch-Bigas F Blanco P Blasi C Bleve H Blümer M Bohácová C Bonifazi R Bonino M Boratav J Brack P Brogueira W C Brown P Buchholz A Bueno N G Busca K S Caballero-Mora B Cai D V Camin R Caruso W Carvalho A Castellina O Catalano G Cataldi L Cazón-Boado R Cester J Chauvin A Chiavassa J A Chinellato A Chou J Chye P D J Clark R W Clay E Colombo R Conceição B Connolly F Contreras J Coppens A Cordier U Cotti S Coutu C E Covault A Creusot J Cronin S Dagoret-Campagne K Daumiller B R Dawson R M de Almeida C De Donato S J de Jong G De La Vega W J M de Mello Junior J R T de Mello Neto I De Mitri V de Souza L Del Peral O Deligny A Della Selva C Delle Fratte H Dembinski C Di Giulio J C Diaz C Dobrigkeit J C D'Olivo D Dornic A Dorofeev J C Dos Anjos M T Dova D D'Urso M A Duvernois R Engel L Epele M Erdmann C O Escobar A Etchegoyen P Facal San Luis H Falcke G Farrar A C Fauth N Fazzini A Fernández F Ferrer S Ferry B Fick A Filevich A Filipcic I Fleck R Fonte C E Fracchiolla W Fulgione B García D García Gámez D Garcia-Pinto X Garrido H Geenen G Gelmini H Gemmeke P L Ghia M Giller H Glass M S Gold G Golup F Gomez Albarracin M Gómez Berisso R Gómez Herrero P Gonçalves M Gonçalves do Amaral D Gonzalez J G Gonzalez M González D Góra A Gorgi P Gouffon V Grassi A Grillo C Grunfeld Y Guardincerri F Guarino G P Guedes J Gutiérrez J D Hague J C Hamilton P Hansen D Harari S Harmsma J L Harton A Haungs T Hauschildt M D Healy T Hebbeker D Heck C Hojvat V C Holmes P Homola J Hörandel A Horneffer M Horvat M Hrabovsky T Huege M Iarlori A Insolia F Ionita A Italiano M Kaducak K H Kampert B Keilhauer E Kemp R M Kieckhafer H O Klages M Kleifges J Kleinfeller R Knapik J Knapp D-H Koang A Kopmann A Krieger O Krömer D Kümpel N Kunka A Kusenko G La Rosa C Lachaud B L Lago D Lebrun P Lebrun J Lee M A Leigui de Oliveira A Letessier-Selvon M Leuthold I Lhenry-Yvon R López A Lopez Agüera J Lozano Bahilo M C Maccarone C Macolino S Maldera M Malek G Mancarella M E Manceñido D Mandat P Mantsch A G Mariazzi I C Maris D Martello J Martínez O Martínez Bravo H J Mathes J Matthews J A J Matthews G Matthiae D Maurizio P O Mazur T McCauley M McEwen R R McNeil M C Medina G Medina-Tanco A Meli D Melo E Menichetti A Menschikov Chr Meurer R Meyhandan M I Micheletti G Miele W Miller S Mollerach M Monasor D Monnier Ragaigne F Montanet B Morales C Morello E Moreno J C Moreno C Morris M Mostafá M A Muller R Mussa G Navarra J L Navarro S Navas L Nellen C Newman-Holmes D Newton T Nguyen Thi N Nierstenhöfer D Nitz D Nosek L Nozka J Oehlschläger T Ohnuki A Olinto V M Olmos-Gilbaja M Ortiz S Ostapchenko L Otero D Pakk Selmi-Dei M Palatka J Pallotta G Parente E Parizot S Parlati S Pastor M Patel T Paul V Pavlidou K Payet M Pech J Pekala R Pelayo I M Pepe L Perrone S Petrera P Petrinca Y Petrov Dieppham Ngoc Dongpham Ngoc T N Pham Thi A Pichel R Piegaia T Pierog M Pimenta T Pinto V Pirronello O Pisanti M Platino J Pochon T A Porter P Privitera M Prouza E J Quel J Rautenberg S Reucroft B Revenu F A S Rezende J Rídky S Riggi M Risse C Rivière V Rizi M Roberts C Robledo G Rodriguez D Rodríguez Frías J Rodriguez Martino J Rodriguez Rojo I Rodriguez-Cabo G Ros J Rosado M Roth B Rouillé-d'Orfeuil E Roulet A C Rovero F Salamida H Salazar G Salina F Sánchez M Santander C E Santo E M Santos F Sarazin S Sarkar R Sato V Scherini H Schieler F Schmidt T Schmidt O Scholten P Schovánek F Schüssler S J Sciutto M Scuderi A Segreto D Semikoz M Settimo R C Shellard I Sidelnik B B Siffert G Sigl N Smetniansky De Grande A Smialkowski R Smída A G K Smith B E Smith G R Snow P Sokolsky P Sommers J Sorokin H Spinka R Squartini E Strazzeri A Stutz F Suarez T Suomijärvi A D Supanitsky M S Sutherland J Swain Z Szadkowski J Takahashi A Tamashiro A Tamburro O Tascau R Tcaciuc D Thomas R Ticona J Tiffenberg C Timmermans W Tkaczyk C J Todero Peixoto B Tomé A Tonachini D Torresi P Travnicek A Tripathi G Tristram D Tscherniakhovski M Tueros V Tunnicliffe R Ulrich M Unger M Urban J F Valdés Galicia I Valiño L Valore A M van den Berg V van Elewyck R A Vázquez D Veberic A Veiga A Velarde T Venters V Verzi M Videla L Villaseñor S Vorobiov L Voyvodic H Wahlberg O Wainberg T Waldenmaier P Walker D Warner A A Watson S Westerhoff G Wieczorek L Wiencke B Wilczynska H Wilczynski C Wileman M G Winnick H Wu B Wundheiler J Xu T Yamamoto P Younk E Zas D Zavrtanik M Zavrtanik A Zech A Zepeda M Ziolkowski B Kégl

Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 x 10(19) electron volts and the positions of active galactic nuclei (AGN) lying within approximately 75 megaparsecs. We rejected the hypothesis of an isotropic distribution of these cosmic rays with at least a 99% confide...

Journal: :Physical review. D, Particles and fields 1996
Stelmach

The growth of small perturbations and the temperature correlation function of cosmic background radiation induced by the perturbations in the isotropic and homogeneous universe with arbitrary spatial curvature, filled with nonrelativistic and so-called string-like matter is calculated. It is shown that both magnitudes are insensitive to the eventual existence of the string-like matter in the un...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
M Sadegh Movahed F Ghasemi Sohrab Rahvar M Reza Rahimi Tabar

We investigate the statistical anisotropy and gaussianity of temperature fluctuations of Cosmic Microwave Background (CMB) radiation data from the Wilkinson Microwave Anisotropy Probe survey, using the Multifractal Detrended Fluctuation Analysis, Rescaled Range, and Scaled Windowed Variance methods. Multifractal Detrended Fluctuation Analysis shows that CMB fluctuations has a long-range correla...

Journal: :Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2010
Peder Kock Robert R Finck Jonas M C Nilsson Karl Ostlund Christer Samuelsson

A real time visualisation method, to be used in mobile gamma-spectrometric search operations using standard detector systems is presented. The new method, called deviation display, uses a modified waterfall display to present relative changes in spectral data over energy and time. Using unshielded (137)Cs and (241)Am point sources and different natural background environments, the behaviour of ...

2013
James R. Houck

We have repeated our earlier observations of the Infrared and submllllmeter background radiation. While the measured values of the infrared background radiation remain unchanged, we have failed to observe the high flux previously reported for the 0.4 to 1.3 mm range. This indicates that the flux cannot have been galactic or cosmic, but further observations are needed to rule out a solar cycle d...

2005
S. Heifets Qing Qin M. Zolotorev

The sudden drop of the beam life time and bursts of background radiation were detected in many machines and associated with microscopic dust particles. We present the model of the dust particle dynamics explaining the long time of the dust events observed in the PEP-II B-factory and BEPC-II machines.

Journal: :Physical review. D, Particles and fields 1986
Traschen Eardley

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