Line-of-sight statistical methods for turbulent medium: VCS for emission and absorption lines (2009)
We present an overview of the Velocity Coordinate Spectrum (VCS), a new technique for studying astrophysical turbulence that utilizes the line-of-sight statistics of Doppler-broadened spectral lines....
The Local Theory of the Cosmic Skeleton (2008)
Pogosyan, D., Pichon, C., Gay, C., Prunet, S., Cardoso, J. F., Sousbie, T., ...
The local theory of the critical lines of 2D and 3D Gaussian fields that underline the cosmic structures is presented. In the context of cosmological matter distribution the subset of critical lines...
Initial Conditions for Large Cosmological Simulations (2008)
Prunet, S., Pichon, C., Aubert, D., Pogosyan, D., Teyssier, R., Gottloeber, S.
This technical paper describes a software package that was designed to produce initial conditions for large cosmological simulations in the context of the Horizon collaboration. These tools...
On the Onset of Stochasticity in $\Lambda$CDM Cosmological Simulations (2008)
Thiebaut, Jerome, Pichon, Christophe, Sousbie, Thierry, Prunet, Simon, Pogosyan, D.
The onset of stochasticity is measured in $\Lambda$CDM cosmological simulations using a set of classical observables. It is quantified as the local derivative of the logarithm of the dispersion of a...
We continue our work on developing techniques for studying turbulence with spectroscopic data. We show that Doppler-broadened absorption spectral lines, in particularly, saturated absorption lines,...
On the Onset of Stochasticity in $\Lambda$CDM Cosmological Simulations (2008)
Thiebaut, Jerome, Pichon, Christophe, Sousbie, Thierry, Prunet, Simon, Pogosyan, D.
The onset of stochasticity is measured in $\Lambda$CDM cosmological simulations using a set of classical observables. It is quantified as the local derivative of the logarithm of the dispersion of a...
On the Onset of Stochasticity in $\Lambda$CDM Cosmological Simulations (2008)
Thiebaut, Jerome, Pichon, Christophe, Sousbie, Thierry, Prunet, Simon, Pogosyan, D.
The onset of stochasticity is measured in $\Lambda$CDM cosmological simulations using a set of classical observables. It is quantified as the local derivative of the logarithm of the dispersion of a...
Searching for non-Gaussian signals in the BOOMERanG 2003 CMB map: Preliminary results (2007)
De Troia, G.; Dipartimento Di Fisica, Università La Sapienza, Piazzale A. Moro 2, I-00185 Roma, Italy, Ade, P. A. R.; BDepartment Of Physics And Astronomy, Cardiff University, Cardiff CF24 3YB, Wales, UK, Bock, J. J.; CJet Propulsion Laboratory, Pasadena, CA, USA, Bond, J. R.; DCanadian Institute For Theoretical Astrophysics, University Of Toronto, Canada, Borrill, J.; EComputational Research Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA, Boscaleri, A.; FIFAC-CNR, Firenze, Italy, ...
We analyze the BOOMERanG 2003 (B03) 145 GHz temperature map to constrain the amplitude of a non Gaussian, primordial contribution to CMB fluctuations. We perform a pixel space analysis restricted to...
Interstellar filaments and the statistics of galactic HI (2007)
Lazarian Pogosyan, A. Lazarian, D. Pogosyan
This paper presents a statistical explanation of filament formation in the galactic atomic hydrogen. We claim that even in the absence of dynamical factors the Gaussian field corresponding to the...
The three dimensional skeleton: tracing the filamentary structure of the universe (2007)
Sousbie, T., Pichon, C., Colombi, S., Novikov, D., Pogosyan, D.
The skeleton formalism aims at extracting and quantifying the filamentary structure of the universe is generalized to 3D density fields; a numerical method for computating a local approximation of...
Searching for non Gaussian signals in the BOOMERanG 2003 CMB maps (2007)
De Troia, G., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We analyze the BOOMERanG 2003 (B03) 145 GHz temperature map to constrain the amplitude of a non Gaussian, primordial contribution to CMB fluctuations. We perform a pixel space analysis restricted to...
A Measurement of the CMB Spectrum from the 2003 Flight (2006)
Montroy, T. E.; Physics Department, Case Western Reserve University, Cleveland, OH, USA, Ade, P. A. R.; Dept. Of Physics And Astronomy, Cardiff University, Cardiff CF24 3YB, Wales, UK, Bond, J. R.; Canadian Institute For Theoretical Astrophysics, University Of Toronto, Toronto, Ontario, Canada, Boscaleri, A.; IFAC-CNR, Firenze, Italy, ...
We report measurements of the CMB polarization power spectra from the 2003 January Antarctic flight of BOOMERANG. The primary results come from 6 days of observation of a patch covering 0.22% of the...
Jones, W. C., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We report on observations of the cosmic microwave background (CMB) obtained during the 2003 January flight of BOOMERANG. These results are derived from 195 hr of observation with four 145 GHz...
A Measurement of the CMB EE Spectrum from the 2003 Flight of BOOMERANG (2006)
Montroy, T. E., Ade, Peter A. R., Bock, James J., Borrill, J., Bond, J. R., Boscaleri, A., ...
A Measurement of the CMB EE Spectrum from the 2003 Flight of BOOMERANG (2006)
Montroy, T. E., Ade, Peter A. R., Bock, James J., Borrill, J., Bond, J. R., Boscaleri, A., ...
Studying Turbulence using Doppler-broadened lines: Velocity Coordinate Spectrum (2005)
We discuss a new technique for studying astrophysical turbulence that utilizes the statistics of Doppler-broadened spectral lines. The technique relates the power Velocity Coordinate Spectrum (VCS),...
Jones, W. C., Ade, P, Bock, J, Bond, J, Borrill, J, Boscaleri, A, ...
We report on observations of the Cosmic Microwave Background (CMB) obtained during the January 2003 flight of Boomerang . These results are derived from 195 hours of observation with four 145 GHz...
Cosmological Parameters from the 2003 flight of BOOMERANG (2005)
MacTavish, C. J., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We present the cosmological parameters from the CMB intensity and polarization power spectra of the 2003 Antarctic flight of the BOOMERANG telescope. The BOOMERANG data alone constrains the...
Piacentini, F, Ade, P, Bock, J, Bond, J, Borrill, J, Boscaleri, A, ...
We present a measurement of the temperature-polarization angular cross power spectrum, , of the Cosmic Microwave Background. The result is based on $\sim 200$ hours of data from 8 polarization...
Instrument, Method, Brightness and Polarization Maps from the 2003 flight of BOOMERanG (2005)
Masi, S, Ade, P, Bock, J, Bond, J, Borrill, J, Boscaleri, A, ...
We present the BOOMERanG-03 experiment and maps of the Stokes parameters I, Q, U of the microwave sky obtained during a 14 day balloon flight in 2003. Three regions of the southern sky were surveyed:...
A Measurement of the CMB Spectrum from the 2003 Flight of BOOMERANG (2005)
Montroy, T. E., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We report measurements of the CMB polarization power spectra from the January 2003 Antarctic flight of BOOMERANG. The primary results come from six days of observation of a patch covering 0.22% of...
Polarization Observations with the Cosmic Background Imager (2004)
Readhead, A. C. S., Myers, S. T., Pearson, T. J., Sievers, J. L., Mason, B. S., Contaldi, C. R., ...
Polarization observations of the cosmic microwave background with the Cosmic Background Imager from September 2002 to May 2004 provide a significant detection of the E-mode polarization and reveal an...
Netterfield, C. B., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
This paper presents a measurement of the angular power spectrum of the Cosmic Microwave Background from l = 75 to l = 1025 (~10' to 5 degrees) from a combined analysis of four 150 GHz channels in the...
The Cosmic Microwave Background and Inflation Parameters (2004)
Bond, J. R., Contaldi, C. R., Lewis, A. M., Pogosyan, D.
We review the currrent cosmic parameter determinations of relevance to inflation using the WMAP-1year, Boomerang, CBI, Acbar and other CMB data. The basic steps in the pipelines which determine the...
Velocity Modification of Power Spectrum from Absorbing Medium (2004)
Quantitative description of the statistics of intensity fluctuations within spectral line data cubes introduced in our earlier work is extended to the absorbing media. A possibility of extracting 3D...
Extended Mosaic Observations with the Cosmic Background Imager (2004)
Readhead, A. C. S., Mason, B. S., Contaldi, C. R., Pearson, T. J., Bond, J. R., Myers, S. T., ...
Two years of microwave background observations with the Cosmic Background Imager (CBI) have been combined to give a sensitive, high resolution angular power spectrum over the range 400 < l < 3500....
Maps of the millimetre sky from the BOOMERanG experiment (2003)
De Bernardis, P., Ade, P. A. R., Balbi, A., Bock, J. J., Bond, J. R., Borrill, J., ...
In the 1998-99 flight, BOOMERanG has produced maps of $\sim 4 %$ of the sky at high Galactic latitudes, at frequencies of 90, 150, 240 and 410 GHz, with resolution $\simgt 10'$. The faint structure...
Cosmic microwave background snapshots: pre-WMAP and post-WMAP (2003)
Bond, J. R., Contaldi, C. R., Pogosyan, D.
Abbreviated: We highlight the remarkable evolution in the CMB power spectrum over the past few years, and in the cosmological parameters for minimal inflation models derived from it. Grand unified...
Measuring CMB Polarization with BOOMERANG (2003)
Montroy, T., Ade, P. A. R., Balbi, A., Bock, J. J., Bond, J. R., Borrill, J., ...
BOOMERANG is a balloon-borne telescope designed for long duration (LDB) flights around Antarctica. The second LDB Flight of BOOMERANG took place in January 2003. The primary goal of this flight was...
First Results from the Arcminute Cosmology Bolometer Array Receiver (2003)
Runyan, M. C., Ade, P. A. R., Bock, J. J., Bond, J. R., Cantalupo, C., Contaldi, C. R., ...
We review the first science results from the Arcminute Cosmology Bolometer Array Receiver (ACBAR); a multifrequency millimeter-wave receiver optimized for observations of the Cosmic Microwave...
Observations of Galactic and Extra-galactic Sources From the BOOMERANG and SEST Telescopes (2003)
Coble, K., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We present millimeter-wave observations of three extra-galactic and six Galactic sources in the Southern sky. Observations were made at 90, 150, 240 and 400 GHz with resolutions of 18, 10, 14 and 12...
Limits on the Dark Energy Parameters from Cosmic Microwave Background experiments (2003)
Pogosyan, D., Bond, J. R., Contaldi, C. R.
Full suite of the present day Cosmic Microwave background (CMB) data, when combined with weak prior information on the Hubble constant and the age of the Universe, or the Large-Scale structure,...
Estimates of Cosmological Parameters Using the CMB Angular Power Spectrum of ACBAR (2002)
Goldstein, J. H., Ade, P. A. R., Bock, J. J., Bond, J. R., Cantalupo, C., Contaldi, C. R., ...
We report an investigation of cosmological parameters based on the measurements of anisotropy in the cosmic microwave background radiation (CMB) made by ACBAR. We use the ACBAR data in concert with...
Ruhl, J. E., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We report the most complete analysis to date of observations of the Cosmic Microwave Background (CMB) obtained during the 1998 flight of BOOMERANG. We use two quite different methods to determine the...
CMB observations with the Cosmic Background Imager (CBI) Interferometer (2002)
Contaldi, C. R., Bond, J. R., Pogosyan, D., Mason, B. S., Myers, S. T., Pearson, T. J., ...
We review the recently published results from the CBI's first season of observations. Angular power spectra of the CMB were obtained from deep integrations of 3 single fields covering a total of 3...
Esquivel, Alejandro, Lazarian, A., Pogosyan, D., Cho, Jungyeon
In a previous work Lazarian and Pogosyan suggested a technique to extract velocity and density statistics, of interstellar turbulence, by means of analysing statistics of spectral line data cubes. In...
The Cosmic Microwave Background & Inflation, Then & Now (2002)
Bond, J. R., Contaldi, C. R., Pogosyan, D., Mason, B. S., Myers, S. T., Pearson, T. J., ...
Boomerang, Maxima, DASI, CBI and VSA significantly increase the case for accelerated expansion in the early universe (the inflationary paradigm) and at the current epoch (dark energy dominance),...
Cosmological Parameters from CMB measurements with the CBI (2002)
Contaldi, C. R., Bond, J. R., Pogosyan, D., Mason, B. S., Myers, S. T., Pearson, T. J., ...
We derive cosmological parameters from the CBI measurements of the Cosmic Microwave Background (CMB) angular power spectrum. Our results provide an independent confirmation of the standard...
Bond, J. R., Contaldi, C. R., Pogosyan, D., Prunet, S., Ruetalo, M. I., ...
We discuss the nature of the possible high-l excess in the Cosmic Microwave Background (CMB) anisotropy power spectrum observed by the Cosmic Background Imager (CBI). We probe the angular structure...
Sievers, J. L., Bond, J. R., Cartwright, J. K., Contaldi, C. R., Mason, B. S., Myers, S. T., ...
We report on the cosmological parameters derived from observations with the Cosmic Background Imager (CBI), covering 40 square degrees and the multipole range 300 < l < 3500. The angular scales...
Mason, B. S., Pearson, T. J., Readhead, A. C. S., Shepherd, M. C., Sievers, J. L., Udomprasert, P. S., ...
We report measurements of anisotropy in the cosmic microwave background radiation over the multipole range l ~ 200 - 3500 with the Cosmic Background Imager based on deep observations of three fields....
Myers, S. T., Contaldi, C. R., Bond, J. R., Pogosyan, D., Prunet, S., ...
We describe an algorithm for the extraction of the angular power spectrum of an intensity field, such as the cosmic microwave background (CMB), from interferometer data. This new method, based on the...
Pearson, T. J., Mason, B. S., Readhead, A. C. S., Shepherd, M. C., Sievers, J. L., Udomprasert, P. S., ...
Using the Cosmic Background Imager, a 13-element interferometer array operating in the 26-36 GHz frequency band, we have observed 40 sq deg of sky in three pairs of fields, each ~ 145 x 165 arcmin,...
Search for non-gaussian signals in the BOOMERanG maps: pixel-space analysis (2002)
Polenta, G., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We search the BOOMERanG maps of the anisotropy of the Cosmic Microwave Background (CMB) for deviations from gaussianity. In this paper we focus on analysis techniques in pixel-space, and compute...
The BOOMERanG experiment and the curvature of the Universe (2002)
Masi, S., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We describe the BOOMERanG experiment and its main result, i.e. the measurement of the large scale curvature of the Universe. BOOMERanG is a balloon-borne microwave telescope with sensitive cryogenic...
Quest for HI Turbulence Statistics: New Techniques (2001)
Lazarian, A., Pogosyan, D., Esquivel, Alejandro
HI data cubes are sources of unique information on interstellar turbulence. Doppler shifts due to supersonic motions contain information on turbulent velocity field which is otherwise difficult to...
De Bernardis, P., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
Three peaks and two dips have been detected in the power spectrum of the cosmic microwave background from the BOOMERANG experiment, at $\ell \sim 210, 540, 840$ and $\ell \sim 420, 750$,...
Netterfield, C. B., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
This paper presents a measurement of the angular power spectrum of the Cosmic Microwave Background from l=75 to l=1025 (~10' to 5 degrees) from a combined analysis of four 150 GHz channels in the...
Noise estimation in CMB time-streams and fast map-making. Application to the BOOMERanG98 data (2001)
Prunet, S., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We describe here an iterative method for jointly estimating the noise power spectrum from a CMB experiment's time-ordered data, together with the maximum-likelihood map. We test the robustness of...
De Bernardis, P., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
BOOMERanG has recently resolved structures on the last scattering surface at redshift $\sim$ 1100 with high signal to noise ratio. We review the technical advances which made this possible, and we...
First results from the BOOMERanG experiment (2000)
De Bernardis, P., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
We report the first results from the BOOMERanG experiment, which mapped at 90, 150, 240 and 410 GHz a wide (3%) region of the microwave sky with minimal local contamination. From the data of the best...
Bond, J. R., Ade, P., Balbi, A., Bock, J., Borrill, J., Boscaleri, A., ...
We show how estimates of parameters characterizing inflation-based theories of structure formation localized over the past year when large scale structure (LSS) information from galaxy and cluster...
The Quintessential CMB, Past & Future (2000)
Bond, J. R., Pogosyan, D., Prunet, S., Sigurdson, K., Balbi, A., ...
The past, present and future of cosmic microwave background (CMB) anisotropy research is discussed, with emphasis on the Boomerang and Maxima balloon experiments. These data are combined with large...
The Cosmic Background Radiation circa nu2K (2000)
Bond, J. R., Pogosyan, D., Prunet, S., Balbi, A., Bock, J., ...
We describe the implications of cosmic microwave background (CMB) observations and galaxy and cluster surveys of large scale structure (LSS) for theories of cosmic structure formation, especially...
Cosmology from Maxima-1, Boomerang and COBE/DMR CMB Observations (2000)
Jaffe, A. H., Ade, P. A. R., Balbi, A., Bock, J. J, Bond, J. R., Borrill, J., ...
Recent results from BOOMERANG-98 and MAXIMA-1, taken together with COBE-DMR, provide consistent and high signal-to-noise measurements of the CMB power spectrum at spherical harmonic multipole bands...
First Estimations of Cosmological Parameters From BOOMERANG (2000)
Lange, A. E., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
The anisotropy of the cosmic microwave background radiation contains information about the contents and history of the universe. We report new limits on cosmological parameters derived from the...
A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation (2000)
De Bernardis, P., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., ...
The blackbody radiation left over from the Big Bang has been transformed by the expansion of the Universe into the nearly isotropic 2.73K Cosmic Microwave Background. Tiny inhomogeneities in the...
A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation (2000)
De Bernardis, P., Ade, P.A.R., Bock, J.J., Bond, J.R., Borrill, J., Boscaleri, A., ...
A flat Universe from high-resolution maps of the cosmic microwave background radiation (2000)
De Bernardis, P., Ade, P-A., Bock, J-J., Bond, J-R., Borrill, J., Boscaleri, A., ...
A flat Universe from high-resolution maps of the cosmic microwave background radiation (2000)
De Bernardis, P., Ade, P-A., Bock, J-J., Bond, J-R., Borrill, J., Boscaleri, A., ...
Velocity Modification of HI Power Spectrum (1999)
The distribution of atomic hydrogen in the Galactic plane is usually mapped using the Doppler shift of 21cm emission line. We calculate the emission spectrum in velocity slices of data (channel maps)...
Theoretical Tools for Large Scale Structure (1998)
Bond, J. R., Kofman, L., Pogosyan, D., Wadsley, J.
We review the main theoretical aspects of the structure formation paradigm which impinge upon wide angle surveys: the early universe generation of gravitational metric fluctuations from quantum noise...
Cosmic Web: Origin and Observables (1998)
Pogosyan, D., Bond, J. R., Kofman, L., Wadsley, J.
Simple analytic arguments are used to understand the predominantly filamentary web in the large-scale distribution of galaxies. Numerical simulations of superclusters are performed to assess the...
Comparison of nonlinear approximations to gravitational instability (1995)
Sathyaprakash, B S, Sahni, V, Munshi, D, Pogosyan, D, Melott, A L
Gravitational instability in the strongly nonlinear regime: A study of various approximations (1994)
Sathyaprakash, B. S., Sahni, V., Munshi, D., Pogosyan, D., Melott, A. L.
We study the development of gravitational instability in the strongly non-linear regime. For this purpose we use a number of statistical indicators such as filamentary statistics, spectrum of...