On March 22, 1909, US-American physicist Nathan Rosen was born. He is best known for his cooperation together with Albert Einstein and Boris Podolsky on the quantum-mechanical description of physical reality leading the the so-called Einstein-Podolsky-Rosen paradoxon, as well as his postulation of worm holes connecting distant areas in space. Although purely theoretic, his work also had an important impact on science fiction literature.
Results derived from data obtained by Wilkinson Microwave Anisotropy Probe (WMAP) are extensively used in many areas of physics. It has been claimed recently that the published WMAP calibrated data and maps might be in question because of an undocumented timing offset in the official processing pipeline [The origin of the WMAP quadrupole, Hao Liu, Shao-Lin Xiong, Ti-Pei Li]. This timing error was shown to induce a quadrupole pattern in the final maps that is very similar to the officially published quadrupole mode. It is clear that a timing offset at the map-making stage will strongly affect the quadrupole scale, since the map-making in [The origin of the WMAP quadrupole, Hao Liu, Shao-Lin Xiong, Ti-Pei Li] was based on the official WMAP calibrated TOD. But there is also a possibility that the calibration process itself could be affected as well and we test this here. In this work we approximately reproduce the original dipole-based iterative calibration procedure to produce a calibrated data set starting from raw uncalibrated data. Using the calibrated data we generate a set of sky maps that we compare to the officially released maps and note some differences between our and official results. We also investigate the effects of various timing offsets introduced in the calibration stage on the final products. We find that a timing offset in the calibration process has little effect on the calibrated data and induced quadrupole.
Sir Fred Hoyle, born in 1915 was a famous astronomer, mathematician, and author. The scientist was the first to coin the term "Big Bang" for the now prevailing theory of the early development of the universe in 1949, even though he happened to be a strong opponent of this theory.
S. Tremaine. (2014)cite arxiv:1407.6363Comment: 14 pages, 2 figures. To appear in "From Atoms to the Stars", a special issue of Daedalus (Fall 2014, vol. 143, no. 4).
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Comment: Final form to appear in Physical Review Letters. Further information
at http://grtensor.org/Robertson/.
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Comment: This short and purely pedagogical text is not submitted anywhere but
here. Errors reported to the author will be rewarded with gratitude and
acknowledgements.
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Comment: Based on lectures given at the CECS School on Quantum Gravity in
Valdivia, Chile, January 2002, 59 pages, 5 figures; v2 improved explanation
of use of analyticity in Hawking effect derivation; v3 typo fixed in Fig.2.
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Comment: 31, pages, 6 figures, notes from 2nd Trans-Regio Winter school in
Passo del Tonale. To appear in Lectures Notes in Physics, "Lectures on
cosmology: Accelerated expansion of the universe" Feb 2010.
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Comment: 5 pages, Honorable Mention at the 2009 Gravity Research Foundation
essay competition.
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Comment: 52 pages, 21 figures, accepted for publication in ApJS. (v2)
References added. Cosmological parameters updated with the latest union
supernova compilation (Kowalski et al. arXiv:0804.4142).
L. Alabidi, and J. Lidsey. (2008)cite arxiv:0807.2181
Comment: 10 pages, 5 figures, revtex4. Figures, table and text updated to
match the version that has been accepted to Phys Rev D.
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Comment: 10 pages, LaTeX; V2: version submitted to PRD. References added,
minor error in text corrected.
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Comment: 71 pages, 16 figures. A preliminary version of the ideas in this
paper was reported in arXiv:0710.1129.
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Comment: 91 pages, 24 figures; minor reorganization of introduction,
clarifying comments throughout.
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Comment: 30 pages latex. v2: references added. v3: correction in three point
function. v4: sign of non-Gaussianity corrected; fNL is negative.
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Comment: 39 pages. v2: References added. v3: comments on conformal and
curvature couplings revised.
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Comment: 53 pages, 5 figures; v3, minor revision, JCAP version; v4, numerical
coefficients corrected in Appendix B, discussion on consistency condition
revised.
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Comment: 8 pages with 3 eps figures. To appear in Proceedings of the Albert
Einstein Century International Conference, UNESCO, Paris, France, 18-22 July
2005.
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Comment: Latex file in Revtex style. 13 pages, 1 figure. v2: minor changes.
Discussion in Subsection VI-A enlarged. References added. Conclusions
unchanged. v3: minor typographic changes. Correlated and uncorrelated \chi^2
non-gaussianity concepts and consequences introduced. Section VI-A enlarged.
Small change in Table I. References updated and added. Conclusions unchanged.
Version to appear in Physical Review D.
D. Lyth, and Y. Rodriguez. (2005)cite arxiv:astro-ph/0504045
Comment: Revtex Latex file. 4 pages, no figures. v4: minor changes, typos
corrected, references added and updated. Version published in Physical Review
Letters.
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Comment: 23 pages JHEP-style, 7 Figures. Updated with improved results.
Accepted for publication by JCAP.
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accepted version).
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Comment: 14 pages, 2 figures; Corrected side comment on DBI Inflation;
Corrected minor mistake in the definition of \delta_cr.
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Comment: LaTeX plus axodraw figures. v2: minor corrections; refs added. JHEP
style: 34 pages + 18 pages appendix.
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Comment: Invited talk by B. Greene at the XXII Texas Symposium on Relativistic
Astrophysics, Stanford University, 13-17 December 2004, (TSRA04-0001), 8
pages, LaTeX, some references added, added paragraph at the end of section 2
and an extra note added after the conclusions regarding modifications to the
large k power spectra deduced from galaxy surveys.
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Comment: 26 pages. v2: added comments about the approximations used, published
JCAP version.
D. Baumann, and H. Peiris. (2008)cite arxiv:0810.3022
Comment: 18 pages, 12 figures. Invited review to appear in Advanced Science
Letters Special Issue on Quantum Gravity, Cosmology and Black Holes.
D. Baumann. (2009)cite arxiv:0907.5424
Comment: Lectures from the 2009 Theoretical Advanced Study Institute at Univ.
of Colorado, Boulder (160 pages, 42 figures).
T. Buchert, G. Ellis, and H. van Elst. (2009)cite arxiv:0906.0134
Comment: 11 pages. Fully hyperlinked. Dedicated to the memory of J"urgen
Ehlers. To appear in the upcoming Special Issue of "General Relativity and
Gravitation".