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CERN Document Server 35 notices trouvées  1 - 10suivantfin  aller vers la notice: La recherche a duré 0.63 secondes. 
1.
CORFU2023: 23rd Hellenic School and Workshops on Elementary Particle Physics and Gravity (CORFU 2023) - CORFU2023   23 Apr - 1 Oct 2023  - Corfu, Greece  / Agathos, Michalis (ed.) (KICC/DAMTP - U Cambridge); Anagnostopoulos, Konstantinos (ed.) (NTU Athens); Aschieri, Paolo (ed.) (U. del Piemonte Orientale); Basilakos, Spyros (ed.) (National Observatory of Athens); Capozziello, Salvatore (ed.) (U Napoli); Cardoso, Vitor (ed.) (NBI - U Copenhagen, IST Lisbon); Chatzistavrakidis, Athanassios (ed.) (Bošković Institute); Di Valentino, Eleonora (ed.) (U Sheffield); Gnecchi, Alessandra (ed.) (INFN, Padova); Kalinowski, Jan (ed.) (Warsaw U.) et al.
2023 - Published in : PoS: CORFU2024 (2024)
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2.
Report of the Topical Group on Cosmic Probes of Fundamental Physics for for Snowmass 2021 / Adhikari, Rana X. (Caltech) ; Anchordoqui, Luis A. (Lehman Coll. ; City Coll., N.Y. ; Amer. Museum Natural Hist.) ; Fang, Ke (Wisconsin U., Madison) ; Sathyaprakash, B.S. (Penn State U., University Park, IGC ; Penn State U., Astron. Astrophys. ; Cardiff U.) ; Tollefson, Kirsten (Michigan State U.) ; Lewis, Tiffany R. (NASA, Goddard) ; Engel, Kristi (Maryland U. ; Los Alamos) ; Aboubrahim, Amin (U. Munster) ; Akarsu, Ozgur (Istanbul, Tech. U.) ; Akrami, Yashar (Case Western Reserve U.) et al.
Cosmic Probes of Fundamental Physics take two primary forms: Very high energy particles (cosmic rays, neutrinos, and gamma rays) and gravitational waves. [...]
arXiv:2209.11726. - 118.
Fulltext
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3.
Fundamental Physics in the Gravitational-Wave Era / Bernitt, Sonja (Jena U.) ; Bertone, Gianfranco (Amsterdam U.) ; Cardoso, Vitor (IST, Lisbon (main)) ; Emparan, Roberto (ICREA, Barcelona) ; Galatyuk, Tetyana (Darmstadt, GSI ; Darmstadt, Tech. Hochsch.) ; Kurkela, Aleksi (CERN) ; Larsen, Ann-Cecilie (Oslo U.) ; Nahrgang, Marlene (SUBATECH, Nantes) ; Nissanke, Samaya (Amsterdam U.) ; Pani, Paolo (Rome U.) et al.
Recording a GW […] has never been a big motivation for LIGO, the motivation has always been to open a new window to the Universe.—Kip Thorne (BBC interview, 2016)The landmark detection of gravitati....
2022 - 4 p. - Published in : Nucl. Phys. News 32 (2022) 16-19
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4.
Mass distribution in the Galactic Center based on interferometric astrometry of multiple stellar orbits / GRAVITY Collaboration
The stars orbiting the compact radio source Sgr A* in the Galactic Centre are precision probes of the gravitational field around the closest massive black hole. In addition to adaptive optics assisted astrometry (with NACO / VLT) and spectroscopy (with SINFONI / VLT, NIRC2 / Keck and GNIRS / Gemini) over three decades, since 2016/2017 we have obtained 30-100 mu-as astrometry with the four-telescope interferometric beam combiner GRAVITY / VLTI reaching a sensitivity of mK = 20 when combining data from one night. [...]
arXiv:2112.07478.- 2022-01-01 - 17 p. - Published in : Astron. Astrophys. 657 (2022) L12 Fulltext: 2112.07478 - PDF; document - PDF;
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5.
Deep images of the Galactic center with GRAVITY / GRAVITY Collaboration
Stellar orbits at the Galactic Center provide a very clean probe of the gravitational potential of the supermassive black hole. They can be studied with unique precision, beyond the confusion limit of a single telescope, with the near-infrared interferometer GRAVITY. [...]
arXiv:2112.07477.- 2022-01-01 - 24 p. - Published in : Astron. Astrophys. 657 (2022) A82 Fulltext: PDF;
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6.
Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole / GRAVITY Collaboration
The star S2 orbiting the compact radio source Sgr A* is a precision probe of the gravitational field around the closest massive black hole (candidate). Over the last 2.7 decades we have monitored the star's radial velocity and motion on the sky, mainly with the SINFONI and NACO adaptive optics (AO) instruments on the ESO VLT, and since 2017, with the four-telescope interferometric beam combiner instrument GRAVITY. [...]
arXiv:2004.07187.- 2020-04-01 - 14 p. - Published in : Astron. Astrophys. 636 (2020) L5 Fulltext: 2004.07187 - PDF; fulltext1791318 - PDF; Fulltext from publisher: PDF;
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7.
Dynamical friction in slab geometries and accretion discs / Vicente, Rodrigo (Lisbon, CENTRA) ; Cardoso, Vitor (Lisbon, CENTRA ; CERN) ; Zilhão, Miguel (Lisbon, CENTRA)
The evolution of planets, stars and even galaxies is driven, to a large extent, by dynamical friction of gravitational origin. There is now a good understanding of the friction produced by extended media, either collisionless of fluid-like. [...]
arXiv:1905.06353.- 2019-09-09 - 12 p. - Published in : Mon. Not. R. Astron. Soc. 489 (2019) 5424-5435 Fulltext: PDF;
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8.
Parametrized black hole quasinormal ringdown. II. Coupled equations and quadratic corrections for nonrotating black holes / McManus, Ryan (Johns Hopkins U.) ; Berti, Emanuele (Johns Hopkins U.) ; Macedo, Caio F.B. (Para U.) ; Kimura, Masashi (Rikkyo U.) ; Maselli, Andrea (Rome U. ; INFN, Rome) ; Cardoso, Vitor (Lisbon, CENTRA ; CERN)
Linear perturbations of spherically symmetric spacetimes in general relativity are described by radial wave equations, with potentials that depend on the spin of the perturbing field. In previous work we studied the quasinormal mode spectrum of spacetimes for which the radial potentials are slightly modified from their general relativistic form, writing generic small modifications as a power-series expansion in the radial coordinate. [...]
arXiv:1906.05155.- 2019-08-30 - 16 p. - Published in : Phys. Rev. D 100 (2019) 044061 Article from SCOAP3: PDF; Fulltext: PDF;
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9.
Parametrized black hole quasinormal ringdown: Decoupled equations for nonrotating black holes / Cardoso, Vitor (IST, Lisbon (main) ; CERN) ; Kimura, Masashi (IST, Lisbon (main) ; Rikkyo U.) ; Maselli, Andrea (U. Rome La Sapienza (main) ; INFN, Rome) ; Berti, Emanuele (Johns Hopkins U. (main)) ; Macedo, Caio F.B. (Para U.) ; McManus, Ryan (Johns Hopkins U. (main))
Black hole solutions in general relativity are simple. The frequency spectrum of linear perturbations around these solutions (i.e., the quasinormal modes) is also simple, and therefore it is a prime target for fundamental tests of black hole spacetimes and of the underlying theory of gravity. [...]
arXiv:1901.01265.- 2019-05-29 - 11 p. - Published in : Phys. Rev. D 99 (2019) 104077 Fulltext: PDF; Fulltext from Publisher: PDF;
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10.
Distinguishing black holes from horizonless objects through the excitation of resonances during inspiral / Cardoso, Vitor (CERN ; Lisbon, CENTRA) ; del Rio, Adrian (Lisbon, CENTRA) ; Kimura, Masashi (Rikkyo U.)
How well is the vacuum Kerr geometry a good description of the dark, compact objects in our universe? Precision measurements of accreting matter in the deep infrared and gravitational-wave measurements of coalescing objects are finally providing answers to this question. Here, we study the possibility of resonant excitation of the modes of the central object -- taken to be very compact but horizonless -- during an extreme-mass-ratio inspiral. [...]
arXiv:1907.01561.- 2019-10-22 - 11 p. Fulltext: PDF;
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143 Cardoso, Vitor
143 Cardoso, Vitor
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