نتایج جستجو برای: gravitational energy

تعداد نتایج: 700328  

Journal: :فیزیک زمین و فضا 0
امین روشندل کاهو فرشاد سلاجقه

introduction: wavelet transform is one of the useful and suitable tools for time series and signal analysis. nowadays wavelet transform is frequently used in geophysical data processing and interpretation, especially seismic data. however, the use of this method isn’t widespread in gravity and geomagnetic. fedi and quarta (1998), martelet et al. (2001) and de oliveira lyrio (2004) used the wave...

2004
D. R. Lorimer P. C. C. Freire

Following a brief review of the principles of the strong equivalence principle (SEP) and tests for its violation in the strong and weak gravitational field regimes, we present preliminary results of new tests using two long-period binary pulsars: J0407+1607 and J2016+1947. PSR J0407+1607 is in a 669day orbit around a > ∼ 0.2M ̄ companion, while J2016+1947 is in a 635-day orbit around a > ∼ 0.3M ̄...

2009
Laurance R. Doyle David P. Carico

The measurement of the gravitational lens delay time between light paths has relied, to date, on the source having sufficient variability to allow photometric variations from each path to be compared. However, the delay times of many gravitational lenses cannot be measured because the intrinsic source amplitude variations are too small to be detectable. At the fundamental quantum mechanical lev...

2016
Takashi Kato

Small total chirality in the gravitational terms originates from the cancellation of the large rightand left-handed helicity elements. Therefore, the external potential energy for gravity can be very small but finite values, and the distortion of the spacetime axes can occur. That is, gravitational field can originate from the fluctuation of the electromagnetic fields because of the slight pola...

1997
Pawel O. Mazur

We show that a gravitating mass M in thermal equilibrium behaves statistically like a system of some number N of harmonic oscillators whose zero-point energy ǫ 2 depends on N universally in such a way that Nǫ2 ∼ hc G , where G is the Newton constant, c is the velocity of light in vacuum, and h is the Planck constant. The large number N is also the number of weakly interacting gravitational atom...

2002
J. F. da Rocha - Neto K. H. Castello - Branco

In the context of the Hamiltonian formulation of the teleparallel equivalent of general relativity we compute the gravitational energy of Kerr and Kerr Anti-de Sitter (Kerr-AdS) space-times. The present calculation is carried out by means of an expression for the energy of the gravitational field that naturally arises from the integral form of the constraint equations of the formalism. In each ...

2008
Savely G. Karshenboim

K 0 –K 0 oscillations are extremely sensitive to the K 0 and K 0 energy at rest. Even assuming m K 0 = m K 0 , the energy is not granted to be the same if gravitational effects on K 0 and K 0 slightly differ. We consider various gravitation fields present and, in particular, galactic fields, which provide a negligible acceleration, but relatively large gravitational potential energy. A constrai...

Journal: :Physical review letters 2017
B P Abbott R Abbott T D Abbott M R Abernathy F Acernese K Ackley C Adams T Adams P Addesso R X Adhikari V B Adya C Affeldt M Agathos K Agatsuma N Aggarwal O D Aguiar L Aiello A Ain P Ajith B Allen A Allocca P A Altin A Ananyeva S B Anderson W G Anderson S Appert K Arai M C Araya J S Areeda N Arnaud K G Arun S Ascenzi G Ashton M Ast S M Aston P Astone P Aufmuth C Aulbert A Avila-Alvarez S Babak P Bacon M K M Bader P T Baker F Baldaccini G Ballardin S W Ballmer J C Barayoga S E Barclay B C Barish D Barker F Barone B Barr L Barsotti M Barsuglia D Barta J Bartlett I Bartos R Bassiri A Basti J C Batch C Baune V Bavigadda M Bazzan C Beer M Bejger I Belahcene M Belgin A S Bell B K Berger G Bergmann C P L Berry D Bersanetti A Bertolini J Betzwieser S Bhagwat R Bhandare I A Bilenko G Billingsley C R Billman J Birch R Birney O Birnholtz S Biscans A S Biscoveanu A Bisht M Bitossi C Biwer M A Bizouard J K Blackburn J Blackman C D Blair D G Blair R M Blair S Bloemen O Bock M Boer G Bogaert A Bohe F Bondu R Bonnand B A Boom R Bork V Boschi S Bose Y Bouffanais A Bozzi C Bradaschia P R Brady V B Braginsky M Branchesi J E Brau T Briant A Brillet M Brinkmann V Brisson P Brockill J E Broida A F Brooks D A Brown D D Brown N M Brown S Brunett C C Buchanan A Buikema T Bulik H J Bulten A Buonanno D Buskulic C Buy R L Byer M Cabero L Cadonati G Cagnoli C Cahillane J Calderón Bustillo T A Callister E Calloni J B Camp W Campbell M Canepa K C Cannon H Cao J Cao C D Capano E Capocasa F Carbognani S Caride J Casanueva Diaz C Casentini S Caudill M Cavaglià F Cavalier R Cavalieri G Cella C B Cepeda L Cerboni Baiardi G Cerretani E Cesarini S J Chamberlin M Chan S Chao P Charlton E Chassande-Mottin B D Cheeseboro H Y Chen Y Chen H-P Cheng A Chincarini A Chiummo T Chmiel H S Cho M Cho J H Chow N Christensen Q Chu A J K Chua S Chua S Chung G Ciani F Clara J A Clark F Cleva C Cocchieri E Coccia P-F Cohadon A Colla C G Collette L Cominsky M Constancio L Conti S J Cooper T R Corbitt N Cornish A Corsi S Cortese C A Costa E Coughlin M W Coughlin S B Coughlin J-P Coulon S T Countryman P Couvares P B Covas E E Cowan D M Coward M J Cowart D C Coyne R Coyne J D E Creighton T D Creighton J Cripe S G Crowder T J Cullen A Cumming L Cunningham E Cuoco T Dal Canton S L Danilishin S D'Antonio K Danzmann A Dasgupta C F Da Silva Costa V Dattilo I Dave M Davier G S Davies D Davis E J Daw B Day R Day S De D DeBra G Debreczeni J Degallaix M De Laurentis S Deléglise W Del Pozzo T Denker T Dent V Dergachev R De Rosa R T DeRosa R DeSalvo J Devenson R C Devine S Dhurandhar M C Díaz L Di Fiore M Di Giovanni T Di Girolamo A Di Lieto S Di Pace I Di Palma A Di Virgilio Z Doctor V Dolique F Donovan K L Dooley S Doravari I Dorrington R Douglas M Dovale Álvarez T P Downes M Drago R W P Drever J C Driggers Z Du M Ducrot S E Dwyer T B Edo M C Edwards A Effler H-B Eggenstein P Ehrens J Eichholz S S Eikenberry R C Essick Z Etienne T Etzel M Evans T M Evans R Everett M Factourovich V Fafone H Fair S Fairhurst X Fan S Farinon B Farr W M Farr E J Fauchon-Jones M Favata M Fays H Fehrmann M M Fejer A Fernández Galiana I Ferrante E C Ferreira F Ferrini F Fidecaro I Fiori D Fiorucci R P Fisher R Flaminio M Fletcher H Fong S S Forsyth J-D Fournier S Frasca F Frasconi Z Frei A Freise R Frey V Frey E M Fries P Fritschel V V Frolov P Fulda M Fyffe H Gabbard B U Gadre S M Gaebel J R Gair L Gammaitoni S G Gaonkar F Garufi G Gaur V Gayathri N Gehrels G Gemme E Genin A Gennai J George L Gergely V Germain S Ghonge Abhirup Ghosh Archisman Ghosh S Ghosh J A Giaime K D Giardina A Giazotto K Gill A Glaefke E Goetz R Goetz L Gondan G González J M Gonzalez Castro A Gopakumar M L Gorodetsky S E Gossan M Gosselin R Gouaty A Grado C Graef M Granata A Grant S Gras C Gray G Greco A C Green P Groot H Grote S Grunewald G M Guidi X Guo A Gupta M K Gupta K E Gushwa E K Gustafson R Gustafson J J Hacker B R Hall E D Hall G Hammond M Haney M M Hanke J Hanks C Hanna M D Hannam J Hanson T Hardwick J Harms G M Harry I W Harry M J Hart M T Hartman C-J Haster K Haughian J Healy A Heidmann M C Heintze H Heitmann P Hello G Hemming M Hendry I S Heng J Hennig J Henry A W Heptonstall M Heurs S Hild D Hoak D Hofman K Holt D E Holz P Hopkins J Hough E A Houston E J Howell Y M Hu E A Huerta D Huet B Hughey S Husa S H Huttner T Huynh-Dinh N Indik D R Ingram R Inta H N Isa J-M Isac M Isi T Isogai B R Iyer K Izumi T Jacqmin K Jani P Jaranowski S Jawahar F Jiménez-Forteza W W Johnson D I Jones R Jones R J G Jonker L Ju J Junker C V Kalaghatgi V Kalogera S Kandhasamy G Kang J B Kanner S Karki K S Karvinen M Kasprzack E Katsavounidis W Katzman S Kaufer T Kaur K Kawabe F Kéfélian D Keitel D B Kelley R Kennedy J S Key F Y Khalili I Khan S Khan Z Khan E A Khazanov N Kijbunchoo Chunglee Kim J C Kim Whansun Kim W Kim Y-M Kim S J Kimbrell E J King P J King R Kirchhoff J S Kissel B Klein L Kleybolte S Klimenko P Koch S M Koehlenbeck S Koley V Kondrashov A Kontos M Korobko W Z Korth I Kowalska D B Kozak C Krämer V Kringel A Królak G Kuehn P Kumar R Kumar L Kuo A Kutynia B D Lackey M Landry R N Lang J Lange B Lantz R K Lanza A Lartaux-Vollard P D Lasky

We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser Interferometer Gravitational Wave Observatory's (aLIGO) first observing run. We also search for persistent gravitational waves from point sources with only minimal assumptions over th...

2008
Bjoern S. Schmekel

Defining energy is a surprisingly difficult problem in general relativity. For instance, the energy density of the gravitational field of a planet at a particular point could be determined by a comoving observer measuring the kinetic energy of a freely falling object. Due to the equivalence principle both the object and the observer fall at equal rates. Therefore, the observer would not assign ...

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