Open AccessJournal Article
Gravitational Lensing Effects of Vacuum Strings: Exact Solutions
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In this article, the interior and exterior solutions to the field equations of a uniform density vacuum string were derived and the exterior solution correspond to a conical space while the interior solution is that of a spherical cap.Abstract:
Exact interior and exterior solutions to Einstein's field equations are derived for vacuum strings. The exterior solution for a uniform density vacuum string corresponds to a conical space while the interior solution is that of a spherical cap. For Mu equals 0-1/4 the external metric is ds-squared = -dt-squared + dr-squared + (1-4 Mu)-squared r-squared dphi-squared + dz-squared, where Mu is the mass per unit length in the string in Planck masses per Planck length. A maximum mass per unit length for a string is 6.73 x 10 to the 27th g/cm. It is shown that strings cause temperature fluctuations in the cosmic microwave background and produce equal brightness double QSO images separated by up to several minutes of arc. Formulae for lensing probabilities, image splittings, and time delays are derived for strings in a realistic cosmological setting. String searches using ST, the VLA, and the COBE satellite are discussed.read more
Citations
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Cosmic Strings and Domain Walls
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Non-Gaussianity from inflation: theory and observations
TL;DR: A review of models of inflation and their predictions for the primordial non-Gaussianity in the density perturbations which are thought to be at the origin of structures in the Universe is given in this article.
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Weak gravitational lensing of the CMB
Antony Lewis,Anthony Challinor +1 more
TL;DR: Weak gravitational lensing has several important effects on the cosmic microwave background (CMB): it changes the CMB power spectra, induces non-Gaussianities, and generates a B-mode polarization signal that is an important source of confusion for the signal from primordial gravitational waves.
The Sunyaev-Zel'dovich effect *
TL;DR: The Sunyaev-Zel-dovich effect as discussed by the authors causes a change in the apparent brightness of the cosmic microwave background radiation towards a cluster of galaxies or any other reservoir of hot plasma.
Journal ArticleDOI
The Atacama Cosmology Telescope: Cosmological Parameters from Three Seasons of Data
Jonathan Sievers,Jonathan Sievers,Renée Hlozek,Michael R. Nolta,Viviana Acquaviva,Graeme E. Addison,Graeme E. Addison,Peter A. R. Ade,Paula Aguirre,Mandana Amiri,John W. Appel,L. Felipe Barrientos,Elia S. Battistelli,Elia S. Battistelli,Nick Battaglia,Nick Battaglia,J. Richard Bond,Ben Brown,B. Burger,Erminia Calabrese,Jay Chervenak,Devin Crichton,Sudeep Das,Sudeep Das,Mark J. Devlin,Simon Dicker,W. Bertrand Doriese,Joanna Dunkley,Rolando Dünner,Thomas Essinger-Hileman,David Faber,R. P. Fisher,Joseph W. Fowler,Joseph W. Fowler,Patricio A. Gallardo,Michael S. Gordon,Megan Gralla,Amir Hajian,Amir Hajian,Mark Halpern,Matthew Hasselfield,Matthew Hasselfield,Carlos Hernández-Monteagudo,J. Colin Hill,Gene C. Hilton,Matt Hilton,Matt Hilton,Adam D. Hincks,Adam D. Hincks,Dave Holtz,Kevin M. Huffenberger,David H. Hughes,John P. Hughes,Leopoldo Infante,Kent D. Irwin,David Jacobson,Brittany Johnstone,Jean Baptiste Juin,Madhuri Kaul,Jeff Klein,Arthur Kosowsky,Judy M. Lau,Michele Limon,Michele Limon,Michele Limon,Yen-Ting Lin,Yen-Ting Lin,Yen-Ting Lin,Thibaut Louis,Robert H. Lupton,Tobias A. Marriage,Tobias A. Marriage,Danica Marsden,Danica Marsden,Krista Martocci,Philip Daniel Mauskopf,Philip Daniel Mauskopf,Michael R. McLaren,Felipe Menanteau,Kavilan Moodley,Harvey Moseley,Calvin B. Netterfield,Michael D. Niemack,Michael D. Niemack,Michael D. Niemack,Lyman A. Page,William A. Page,Lucas Parker,Bruce Partridge,Reed Plimpton,Hernan Quintana,Erik D. Reese,Beth Reid,Felipe Rojas,Neelima Sehgal,Neelima Sehgal,Blake D. Sherwin,Benjamin L. Schmitt,David N. Spergel,Suzanne T. Staggs,O. R. Stryzak,Daniel S. Swetz,Daniel S. Swetz,Eric R. Switzer,Eric R. Switzer,Robert Thornton,Robert Thornton,Hy Trac,Carole Tucker,Masao Uehara,Katerina Visnjic,Ryan Warne,Grant W. Wilson,Edward J. Wollack,Yue Zhao,Caroline Zunckel +115 more
TL;DR: In this article, a model of primary cosmological and secondary foreground parameters is fit to the map power spectra and lensing deflection power spectrum, including contributions from both the thermal Sunyaev-Zeldovich (tSZ) effect and the kinematic SZ effect, Poisson and correlated anisotropy from unresolved infrared sources, radio sources and the correlation between the tSZ effect and infrared sources.
References
More filters
Journal ArticleDOI
Non-Gaussianity from inflation: theory and observations
TL;DR: A review of models of inflation and their predictions for the primordial non-Gaussianity in the density perturbations which are thought to be at the origin of structures in the Universe is given in this article.
Journal ArticleDOI
Weak gravitational lensing of the CMB
Antony Lewis,Anthony Challinor +1 more
TL;DR: Weak gravitational lensing has several important effects on the cosmic microwave background (CMB): it changes the CMB power spectra, induces non-Gaussianities, and generates a B-mode polarization signal that is an important source of confusion for the signal from primordial gravitational waves.
Journal ArticleDOI
The Sunyaev-Zel’dovich Effect
TL;DR: The Sunyaev-Zel-dovich effect as mentioned in this paper causes a change in the apparent brightness of the cosmic microwave background radiation towards a cluster of galaxies or any other reservoir of hot plasma.
Journal ArticleDOI
The Atacama Cosmology Telescope: Cosmological Parameters from Three Seasons of Data
Jonathan Sievers,Jonathan Sievers,Renée Hlozek,Michael R. Nolta,Viviana Acquaviva,Graeme E. Addison,Graeme E. Addison,Peter A. R. Ade,Paula Aguirre,Mandana Amiri,John W. Appel,L. Felipe Barrientos,Elia S. Battistelli,Elia S. Battistelli,Nick Battaglia,Nick Battaglia,J. Richard Bond,Ben Brown,B. Burger,Erminia Calabrese,Jay Chervenak,Devin Crichton,Sudeep Das,Sudeep Das,Mark J. Devlin,Simon Dicker,W. Bertrand Doriese,Joanna Dunkley,Rolando Dünner,Thomas Essinger-Hileman,David Faber,R. P. Fisher,Joseph W. Fowler,Joseph W. Fowler,Patricio A. Gallardo,Michael S. Gordon,Megan Gralla,Amir Hajian,Amir Hajian,Mark Halpern,Matthew Hasselfield,Matthew Hasselfield,Carlos Hernández-Monteagudo,J. Colin Hill,Gene C. Hilton,Matt Hilton,Matt Hilton,Adam D. Hincks,Adam D. Hincks,Dave Holtz,Kevin M. Huffenberger,David H. Hughes,John P. Hughes,Leopoldo Infante,Kent D. Irwin,David Jacobson,Brittany Johnstone,Jean Baptiste Juin,Madhuri Kaul,Jeff Klein,Arthur Kosowsky,Judy M. Lau,Michele Limon,Michele Limon,Michele Limon,Yen-Ting Lin,Yen-Ting Lin,Yen-Ting Lin,Thibaut Louis,Robert H. Lupton,Tobias A. Marriage,Tobias A. Marriage,Danica Marsden,Danica Marsden,Krista Martocci,Philip Daniel Mauskopf,Philip Daniel Mauskopf,Michael R. McLaren,Felipe Menanteau,Kavilan Moodley,Harvey Moseley,Calvin B. Netterfield,Michael D. Niemack,Michael D. Niemack,Michael D. Niemack,Lyman A. Page,William A. Page,Lucas Parker,Bruce Partridge,Reed Plimpton,Hernan Quintana,Erik D. Reese,Beth Reid,Felipe Rojas,Neelima Sehgal,Neelima Sehgal,Blake D. Sherwin,Benjamin L. Schmitt,David N. Spergel,Suzanne T. Staggs,O. R. Stryzak,Daniel S. Swetz,Daniel S. Swetz,Eric R. Switzer,Eric R. Switzer,Robert Thornton,Robert Thornton,Hy Trac,Carole Tucker,Masao Uehara,Katerina Visnjic,Ryan Warne,Grant W. Wilson,Edward J. Wollack,Yue Zhao,Caroline Zunckel +115 more
TL;DR: In this article, a model of primary cosmological and secondary foreground parameters is fit to the map power spectra and lensing deflection power spectrum, including contributions from both the thermal Sunyaev-Zeldovich (tSZ) effect and the kinematic SZ effect, Poisson and correlated anisotropy from unresolved infrared sources, radio sources and the correlation between the tSZ effect and infrared sources.
Journal ArticleDOI
Gravitational Lensing from a Spacetime Perspective
TL;DR: In this paper, the theory of gravitational lensing is reviewed from a spacetime perspective, without quasi-Newtonian approximations, where light propagation is described in terms of lightlike geodesics of a metric of Lorentzian signature, and the basic equations and relevant techniques for calculating the position, shape, and brightness of images in an arbitrary general-relativistic spacetime.
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