Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Næss, S. K."'
Autor:
San, M., Galloway, M., Gjerløw, E., Watts, D. J., Aurlien, R., Basyrov, A., Brilenkov, M., Eriksen, H. K., Fuskeland, U., Hergt, L. T., Herman, D., Ihle, H. T., Lunde, J. G. S., Næss, S. K., Stutzer, N. -O., Thommesen, H., Wehus, I. K.
We present an improved zodiacal light model for COBE-DIRBE derived through global Bayesian analysis within the Cosmoglobe Data Release 2 framework. The parametric form of the ZL model is identical to that introduced by Kelsall et al. (1998), but the
Externí odkaz:
http://arxiv.org/abs/2408.11004
Autor:
Watts, D. J., Galloway, M., Gjerløw, E., San, M., Aurlien, R., Basyrov, A., Brilenkov, M., Eriksen, H. K., Fuskeland, U., Hergt, L. T., Herman, D., Ihle, H. T., Lunde, J. G. S., Næss, S. K., Stutzer, N. -O., Thommesen, H., Wehus, I. K.
We present the first global Bayesian analysis of the time-ordered DIRBE data within the Cosmoglobe framework, building on the same methodology that has previously been successfully applied to Planck LFI and WMAP. These data are analyzed jointly with
Externí odkaz:
http://arxiv.org/abs/2408.10952
Autor:
Watts, D. J., Galloway, M., Gjerløw, E., San, M., Aurlien, R., Basyrov, A., Brilenkov, M., Eriksen, H. K., Fuskeland, U., Herman, D., Ihle, H. T., Lunde, J. G. S., Næss, S. K., Stutzer, N. -O., Thommesen, H., Wehus, I. K.
We derive new constraints on the CIB monopole spectrum from a set of reprocessed COBE-DIRBE sky maps that have lower instrumental and astrophysical contamination than the legacy DIRBE maps. These maps have been generated through a global Bayesian ana
Externí odkaz:
http://arxiv.org/abs/2406.01491
Autor:
Fuskeland, U., Andersen, K. J., Aurlien, R., Banerji, R., Brilenkov, M., Eriksen, H. K., Galloway, M., Gjerløw, E., Næss, S. K., Svalheim, T. L., Wehus, I. K.
Publikováno v:
A&A 646, A69 (2021)
We constrain the spectral index of polarized synchrotron emission, $\beta_s$, by correlating the recently released 2.3 GHz S-Band Polarization All Sky Survey (S-PASS) data with the 23 GHz 9-year Wilkinson Microwave Anisotropy Probe (WMAP) sky maps. W
Externí odkaz:
http://arxiv.org/abs/1909.05923
Autor:
QUIET Collaboration, Ruud, T. M., Fuskeland, U., Wehus, I. K., Vidal, M., Araujo, D., Bischoff, C., Buder, I., Chinone, Y., Cleary, K., Dumoulin, R. N., Kusaka, A., Monsalve, R., Naess, S. K., Newburgh, L. B., Reeves, R. A., Zwart, J. T. L., Bronfman, L., Davies, R. D., Davis, R., Dickinson, C., Eriksen, H. K., Gaier, T., Gundersen, J. O., Hasegawa, M., Hazumi, M., Huffenberger, K. M., Jones, M. E., Lawrence, C. R., Leitch, E. M., Limon, M., Miller, A. D., Pearson, T. J., Piccirillo, L., Radford, S. J. E., Readhead, A. C. S., Samtleben, D., Seiffert, M., Shepherd, M. C., Staggs, S. T., Tajima, O., Thompson, K. L.
Publikováno v:
ApJ 811, 89 (2015)
We present polarization observations of two Galactic plane fields centered on Galactic coordinates (l,b)=(0 deg,0 deg) and (329 deg, 0 deg) at Q- (43 GHz) and W-band (95 GHz), covering between 301 and 539 square degrees depending on frequency and fie
Externí odkaz:
http://arxiv.org/abs/1508.02778
Autor:
QUIET Collaboration, Huffenberger, K. M., Araujo, D., Bischoff, C., Buder, I., Chinone, Y., Cleary, K., Kusaka, A., Monsalve, R., Næss, S. K., Newburgh, L. B., Reeves, R., Ruud, T. M., Wehus, I. K., Zwart, J. T. L., Dickinson, C., Eriksen, H. K., Gaier, T., Gundersen, J. O., Hasegawa, M., Hazumi, M., Miller, A. D., Radford, S. J. E., Readhead, A. C. S., Staggs, S. T., Tajima, O., Thompson, K. L.
We present polarization measurements of extragalactic radio sources observed during the Cosmic Microwave Background polarization survey of the Q/U Imaging Experiment (QUIET), operating at 43 GHz (Q-band) and 95 GHz (W-band). We examine sources select
Externí odkaz:
http://arxiv.org/abs/1412.1111
Spatial variations in the spectral index of polarized synchrotron emission in the 9 yr WMAP sky maps
Publikováno v:
ApJ, 790, 104 (2014)
We estimate the spectral index, beta, of polarized synchrotron emission as observed in the 9 yr WMAP sky maps using two methods, linear regression ("T-T plot") and maximum likelihood. We partition the sky into 24 disjoint sky regions, and evaluate th
Externí odkaz:
http://arxiv.org/abs/1404.5323
Autor:
Gjerløw, E., Mikkelsen, K., Eriksen, H. K., Górski, K. M., Huey, G., Jewell, J. B., Næss, S. K., Rocha, G., Seljebotn, D. S., Wehus, I. K.
We investigate sets of random variables that can be arranged sequentially such that a given variable only depends conditionally on its immediate predecessor. For such sets, we show that the full joint probability distribution may be expressed exclusi
Externí odkaz:
http://arxiv.org/abs/1304.0315
We present a fully parallelized grid-based parameter estimation algorithm for investigating multidimensional likelihoods called Snake, and apply it to cosmological parameter estimation. The basic idea is to map out the likelihood grid-cell by grid-ce
Externí odkaz:
http://arxiv.org/abs/1211.3126
Autor:
QUIET Collaboration, Bischoff, C., Brizius, A., Buder, I., Chinone, Y., Cleary, K., Dumoulin, R. N., Kusaka, A., Monsalve, R., Naess, S. K., Newburgh, L. B., Nixon, G., Reeves, R., Smith, K. M., Vanderlinde, K., Wehus, I. K., Bogdan, M., Bustos, R., Church, S. E., Davis, R., Dickinson, C., Eriksen, H. K., Gaier, T., Gundersen, J. O., Hasegawa, M., Hazumi, M., Holler, C., Huffenberger, K. M., Imbriale, W. A., Ishidoshiro, K., Jones, M. E., Kangaslahti, P., Kapner, D. J., Lawrence, C. R., Leitch, E. M., Limon, M., McMahon, J. J., Miller, A. D., Nagai, M., Nguyen, H., Pearson, T. J., Piccirillo, L., Radford, S. J. E., Readhead, A. C. S., Richards, J. L., Samtleben, D., Seiffert, M., Shepherd, M. C., Staggs, S. T., Tajima, O., Thompson, K. L., Williamson, R., Winstein, B., Wollack, E. J., Zwart, J. T. L.
Publikováno v:
The Astrophysical Journal, Volume 768, Number 1 (2013), 28 pages
The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the Cosmic Microwave Background, targeting the imprint of inflationary gravitational waves at large angular scales (~ 1 degree). Between 2008 October and 2010 December, two ind
Externí odkaz:
http://arxiv.org/abs/1207.5562