Results 41 to 50 of about 257,498 (300)

Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds

, 1998
We present a full-sky 100 μm map that is a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed.
D. Schlegel, D. Finkbeiner, M. Davis
semanticscholar   +1 more source

POLAR: Instrument and Results [PDF]

, 2002
We describe the design, performance, and results of a polarimeter used to make precision measurements of the 2.7 K cosmic microwave background. In the Spring of 2000 the instrument searched for polarized emission in three microwave frequency bands ...
de Oliveira-Costa, Angelica, Keating, Brian G., O'Dell, Christopher W., Piccirillo, Lucio, Stebor, Nate C., Tegmark, Max, Timbie, Peter T.   +6 more
core   +1 more source

Mitigating Cosmic Microwave Background Shadow Degradation of Tensor-to-scalar Ratio Measurements through Map-based Studies

The Astrophysical Journal Letters, 2023
It has been pointed out that the spurious cosmic microwave background (CMB) B -mode polarization signals caused by the absorption of the CMB monopole component due to the Galactic interstellar matter, called the CMB shadow, degrade the accuracy of ...
Tamaki Murokoshi, Yuji Chinone, Masashi Nashimoto, Kiyotomo Ichiki, Makoto Hattori   +4 more
doaj   +1 more source

A New Measurement of the Cosmic Microwave Background Radiation Temperature at z = 1.97 [PDF]

, 1996
We present detections of absorption from the ground state and excited states of C I in the z = 1.9731 damped Lyα system of the QSO 0013-004. The excitation temperature between the J = 0 and J = 1 fine-structure levels of C I is 11.6 ± 1.0 K.
J. Ge, J. Bechtold, J. Black
semanticscholar   +1 more source

The Cosmic Microwave Background [PDF]

AnnalesHenriPoincare4:S275-S290,2003, 2002
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.
arxiv   +1 more source

Non-Critical Liouville String Escapes Constraints on Generic Models of Quantum Gravity [PDF]

, 2001
It has recently been pointed out that generic models of quantum gravity must contend with severe phenomenological constraints imposed by gravitational Cerenkov radiation, neutrino oscillations and the cosmic microwave background radiation.
A.V. Olinto, B.E. Schaefer, D. V. Nanopoulos, D.J. Bird, E. D’Hoker, E. D’Hoker, E. Lisi, F. Benatti, F. Benatti, F. Benatti, F. David, G. Amelino-Camelia, G. Amelino-Camelia, G.D. Moore, G.T. Zatsepin, H. Verlinde, H. Yu, I. Antoniadis, I. Antoniadis, J. Distler, J. Ellis, J. Ellis, J. Ellis, J. Ellis, J. Ellis, J. Maldacena, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Ellis, John Ellis, K. Greisen, L. Randall, M. Nagano, M. Takeda, M.A. Lawrence, N. Arkani-Hamed, N. E. Mavromatos, N.E. Mavromatos, N.E. Mavromatos, P. Huet, P. Kaaret, R. Adler, R. Ratazzi, S.D. Biller, S.L. Adler, S.S. Gubser   +51 more
core   +3 more sources

Delensing of Cosmic Microwave Background Polarization with Machine Learning

The Astrophysical Journal Supplement Series, 2023
Primordial B -mode detection is one of the main goals of next-generation cosmic microwave background (CMB) experiments. Primordial B -modes are a unique signature of primordial gravitational waves (PGWs).
Ye-Peng Yan, Guo-Jian Wang, Si-Yu Li, Jun-Qing Xia   +3 more
doaj   +1 more source

A Cross-internal Linear Combination Approach to Probe the Secondary CMB Anisotropies: Kinematic Sunyaev–Zel’dovich Effect and CMB Lensing

The Astrophysical Journal, 2023
We propose a cross-internal linear combination (cross-ILC) approach to measure the small-scale cosmic microwave background (CMB) anisotropies robustly against the contamination from astrophysical signals.
Srinivasan Raghunathan, Yuuki Omori
doaj   +1 more source

From primordial quantum fluctuations to the anisotropies of the cosmic microwave background radiation [PDF]

, 2005
These lecture notes cover mainly three connected topics. In the first part we give a detailed treatment of cosmological perturbation theory. The second part is devoted to cosmological inflation and the generation of primordial fluctuations. In part three
N. Straumann
semanticscholar   +1 more source

PRIMORDIAL GRAVITATIONAL WAVES AND COSMIC MICROWAVE BACKGROUND RADIATION [PDF]

The Twelfth Marcel Grossmann Meeting, 2012
A summary of presentations delivered at the OC1 parallel session "Primordial Gravitational Waves and the CMB" of the 12th Marcel Grossmann Meeting on General Relativity (Paris, 12-18 July 2009). To be published in the Proceedings of the MG12. 18 pages, 8 (colour) figures.
Wen Zhao, L. P. Grishchuk, D. Baskaran
openaire   +3 more sources