Search Results - "POGOSYAN, D"

SPECTRUM AND ANISOTROPY OF TURBULENCE FROM MULTI-FREQUENCY MEASUREMENT OF SYNCHROTRON POLARIZATION by Lazarian, A., Pogosyan, D.

“…ABSTRACT We consider turbulent synchrotron-emitting media that also exhibit Faraday rotation and provide a statistical description of synchrotron polarization…”
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STATISTICAL DESCRIPTION OF SYNCHROTRON INTENSITY FLUCTUATIONS: STUDIES OF ASTROPHYSICAL MAGNETIC TURBULENCE by LAZARIAN, A, POGOSYAN, D

“…We provide a theoretical description of synchrotron fluctuations arising from magnetic turbulence. We derive an expression that relates the correlation of…”
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Extending velocity channel analysis for studying turbulence anisotropies by Kandel, D., Lazarian, A., Pogosyan, D.

“…We extend the velocity channel analysis (VCA), introduced by Lazarian & Pogosyan, of the intensity fluctuations in the velocity slices of…”
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Galaxy evolution in the metric of the cosmic web by Kraljic, K., Arnouts, S., Pichon, C., Laigle, C., de la Torre, S., Vibert, D., Cadiou, C., Dubois, Y., Treyer, M., Schimd, C., Codis, S., de Lapparent, V., Devriendt, J., Hwang, H. S., Le Borgne, D., Malavasi, N., Milliard, B., Musso, M., Pogosyan, D., Alpaslan, M., Bland-Hawthorn, J., Wright, A. H.

“…Abstract The role of the cosmic web in shaping galaxy properties is investigated in the Galaxy And Mass Assembly (GAMA) spectroscopic survey in the redshift…”
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Study of velocity centroids based on the theory of fluctuations in position–position–velocity space by Kandel, D, Lazarian, A, Pogosyan, D

“…We study the possibility of obtaining power spectrum of gas velocity in the turbulent interstellar medium from spatial correlation of velocity centroids (VCs)…”
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Dancing in the dark: galactic properties trace spin swings along the cosmic web by Dubois, Y., Pichon, C., Welker, C., Le Borgne, D., Devriendt, J., Laigle, C., Codis, S., Pogosyan, D., Arnouts, S., Benabed, K., Bertin, E., Blaizot, J., Bouchet, F., Cardoso, J.-F., Colombi, S., de Lapparent, V., Desjacques, V., Gavazzi, R., Kassin, S., Kimm, T., McCracken, H., Milliard, B., Peirani, S., Prunet, S., Rouberol, S., Silk, J., Slyz, A., Sousbie, T., Teyssier, R., Tresse, L., Treyer, M., Vibert, D., Volonteri, M.

“…A large-scale hydrodynamical cosmological simulation, Horizon-AGN, is used to investigate the alignment between the spin of galaxies and the cosmic filaments…”
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Swirling around filaments: are large-scale structure vortices spinning up dark haloes? by Laigle, C, Pichon, C, Codis, S, Dubois, Y, Le Borgne, D, Pogosyan, D, Devriendt, J, Peirani, S, Prunet, S, Rouberol, S, Slyz, A, Sousbie, T

“…The kinematic analysis of dark matter and hydrodynamical simulations suggests that the vorticity in large-scale structure is mostly confined to, and…”
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Nature of striation in 21 cm channel Maps: velocity caustics by Hu, Yue, Lazarian, A, Alina, D, Pogosyan, D, Ho, Ka Wai

“…ABSTRACT The alignment of striated intensity structures in thin neutral hydrogen (H i) spectroscopic channels with Galactic magnetic fields has been observed…”
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Statistical properties of Galactic CMB foregrounds: dust and synchrotron by Kandel, D, Lazarian, A, Pogosyan, D

“…ABSTRACT Recent Planck observations have revealed some of the important statistical properties of synchrotron and dust polarization, namely, the B to E mode…”
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Rigging dark haloes: why is hierarchical galaxy formation consistent with the inside-out build-up of thin discs? by Pichon, C., Pogosyan, D., Kimm, T., Slyz, A., Devriendt, J., Dubois, Y.

“…State-of-the-art hydrodynamical simulations show that gas inflow through the virial sphere of dark matter haloes is focused (i.e. has a preferred inflow…”
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Non-Gaussian Minkowski functionals and extrema counts in redshift space by Codis, S., Pichon, C., Pogosyan, D., Bernardeau, F., Matsubara, T.

“…In the context of upcoming large-scale structure surveys such as Euclid, it is of prime importance to quantify the effect of peculiar velocities on geometric…”
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The clustering of critical points in the evolving cosmic web by Shim, J, Codis, S, Pichon, C, Pogosyan, D, Cadiou, C

“…ABSTRACT Focusing on both small separations and baryonic acoustic oscillation scales, the cosmic evolution of the clustering properties of peak, void, wall,…”
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Intrinsic alignment of simulated galaxies in the cosmic web: implications for weak lensing surveys by Codis, S., Gavazzi, R., Dubois, Y., Pichon, C., Benabed, K., Desjacques, V., Pogosyan, D., Devriendt, J., Slyz, A.

“…The intrinsic alignment of galaxy shapes (by means of their angular momentum) and their cross-correlation with the surrounding dark matter tidal field are…”
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Non-Gaussianity and Minkowski functionals: forecasts for Planck by Ducout, A., Bouchet, F. R., Colombi, S., Pogosyan, D., Prunet, S.

“…We study Minkowski functionals as probes of primordial non-Gaussianity in the cosmic microwave background, specifically for the estimate of the primordial…”
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Connecting the cosmic web to the spin of dark haloes: implications for galaxy formation by Codis, Sandrine, Pichon, Christophe, Devriendt, Julien, Slyz, Adrianne, Pogosyan, Dmitry, Dubois, Yohan, Sousbie, Thierry

“…ABSTRACT We investigate the alignment of the spin of dark matter haloes relative (i) to the surrounding large‐scale filamentary structure, and (ii) to the…”
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STUDYING THE INTERSTELLAR MAGNETIC FIELD FROM ANISOTROPIES IN VELOCITY CHANNELS by Esquivel, A., Lazarian, A., Pogosyan, D.

“…ABSTRACT Turbulence in the interstellar medium is anisotropic due to the ubiquitous magnetic fields. This anisotropy depends on the strength of the magnetic…”
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When do cosmic peaks, filaments, or walls merge? A theory of critical events in a multiscale landscape by Cadiou, C, Pichon, C, Codis, S, Musso, M, Pogosyan, D, Dubois, Y, Cardoso, J-F, Prunet, S

“…ABSTRACT The merging rate of cosmic structures is computed, relying on the ansatz that they can be predicted in the initial linear density field from the…”
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Studying Turbulence Using Doppler-broadened Lines: Velocity Coordinate Spectrum by Lazarian, A, Pogosyan, D

“…We discuss a new technique for studying astrophysical turbulence that utilizes the statistics of Doppler-broadened spectral lines. The technique relates the…”
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Velocity Modification of the Power Spectrum from an Absorbing Medium by Lazarian, A, Pogosyan, D

“…A quantitative description of the statistics of intensity fluctuations within spectral line data cubes introduced in our earlier work is extended to the…”
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Studying Velocity Turbulence from Doppler-broadened Absorption Lines: Statistics of Optical Depth Fluctuations by Lazarian, A, Pogosyan, D

“…We continue our work on developing techniques for studying turbulence with spectroscopic data. We show that Doppler-broadened absorption spectral lines, in…”
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