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Start Over Author "A.H. Jaffe" Topic astrophysics::high energy astrophysical phenomena
2 results on '"A.H. Jaffe"'

1. Computing challenges of the cosmic microwave background

Author

L. Knox, R.G. Crittenden, A.H. Jaffe, and J.R. Bond

Subjects
0103 Numerical And Computational Mathematics, Physics, 0802 Computation Theory And Mathematics, General Computer Science, Fluids & Plasmas, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Astrophysics (astro-ph), Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, General Engineering, Cosmic background radiation, FOS: Physical sciences, Astronomy, 0805 Distributed Computing, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Cosmology, astro-ph, Sky, media_common
Abstract

The Cosmic Microwave Background (CMB) encodes information on the origin and evolution of the universe, buried in a fractional anisotropy of one part in 100,000 on angular scales from arcminutes to tens of degrees. We await the coming onslaught of data from experiments measuring the microwave sky from the ground, from balloons and from space. However, we are faced with the harsh reality that current algorithms for extracting cosmological information cannot handle data sets of the size and complexity expected even in the next few years. Here we review the challenges involved in understanding this data: making maps from time-ordered data, removing the foreground contaminants, and finally estimating the power spectrum and cosmological parameters from the CMB map. If handled naively, the global nature of the analysis problem renders these tasks effectively impossible given the volume of the data. We discuss possible techniques for overcoming these issues and outline the many other challenges that wait to be addressed., Invited article for Computing in Science and Engineering, Mar/April issue. For published version and higher resolution figures, see http://www.cita.utoronto.ca/~crittend/CiSE 15 pages, 5 figures

Published
1999
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2. Planck intermediate results. XII: Diffuse Galactic components in the Gould Belt system

Author

P.A.R. Ade, N. Aghanim, M.I.R. Alves, M. Arnaud, M. Ashdown, F. Atrio-Barandela, J. Aumont, C. Baccigalupi, A. Balbi, A.J. Banday, R.B. Barreiro, J.G. Bartlett, E. Battaner, L. Bedini, K. Benabed, A. Benoit, J.P. Bernard, M. Bersanelli, A. Bonaldi, J.R. Bond, J. Borrill, F.R. Bouchet, F. Boulanger, C. Burigana, R.C. Butler, P. Cabella, J.F. Cardoso, X. Chen, L.Y. Chiang, P.R. Christensen, D.L. Clements, S. Colombi, L.P.L. Colombo, A. Coulais, F. Cuttaia, R.D. Davies, R.J. Davis, Paolo De Bernardis, G. De Gasperis, G. De Zotti, J. Delabrouille, C. Dickinson, J.M. Diego, G. Dobler, H. Dole, S. Donzelli, O. Dore, M. Douspis, X. Dupac, T.A. Ensslin, F. Finelli, O. Forni, M. Frailis, E. Franceschi, S. Galeotta, K. Ganga, R.T. Genova-Santos, T. Ghosh, M. Giard, G. Giardino, Y. Giraud-Heraud, J. Gonzalez-Nuevo, K.M. Gorski, A. Gregorio, A. Gruppuso, F.K. Hansen, D. Harrison, C. Hernandez-Monteagudo, S.R. Hildebrandt, E. Hivon, M. Hobson, W.A. Holmes, A. Hornstrup, W. Hovest, K.M. Huffenberger, T.R. Jaffe, A.H. Jaffe, M. Juvela, E. Keihanen, R. Keskitalo, T.S. Kisner, J. Knoche, M. Kunz, H. Kurki-Suonio, G. Lagache, A. Lahteenmaki, J.M. Lamarre, A. Lasenby, C.R. Lawrence, S. Leach, R. Leonardi, P.B. Lilje, M. Linden-Vørnle, M. Linden-Vornle, P.M. Lubin, J.F. Macias-Perez, B. Maffei, D. Maino, N. Mandolesi, M. Maris, D.J. Marshall, P.G. Martin, E. Martinez-Gonzalez, Silvia Masi, M. Massardi, S. Matarrese, P. Mazzotta, Alessandro Melchiorri, A. Mennella, S. Mitra, M.A. Miville-Deschenes, A. Moneti, L. Montier, G. Morgante, D. Mortlock, D. Munshi, J.A. Murphy, P. Naselsky, Federico Nati, P. Natoli, H.U. Nørgaard-Nielsen, H.U. Norgaard-Nielsen, F. Noviello, D. Novikov, I. Novikov, S. Osborne, C.A. Oxborrow, F. Pajot, R. Paladini, D. Paoletti, M. Peel, L. Perotto, F. Perrotta, Francesco Piacentini, M. Piat, E. Pierpaoli, D. Pietrobon, S. Plaszczynski, E. Pointecouteau, Gianluca Polenta, L. Popa, T. Poutanen, G.W. Pratt, S. Prunet, J.L. Puget, J.P. Rachen, W.T. Reach, R. Rebolo, M. Reinecke, C. Renault, Sara Ricciardi, I. Ristorcelli, G. Rocha, C. Rosset, J.A. Rubino-Martin, B. Rusholme, E. Salerno, M. Sandri, Giorgio Savini, D. Scott, L. Spencer, V. Stolyarov, R. Sudiwala, A.S. Suur-Uski, J.F. Sygnet, J.A. Tauber, L. Terenzi, C.T. Tibbs, L. Toffolatti, M. Tomasi, M. Tristram, L. Valenziano, B. Van Tent, J. Varis, P. Vielva, F. Villa, N. Vittorio, L.A. Wade, B.D. Wandelt, N. Ysard, D. Yvon, A. Zacchei, A. Zonca, APC - Cosmologie, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Hélium : du fondamental aux applications (HELFA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), APC - Gravitation (APC-Gravitation), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), PLANCK, Ade, P, Aghanim, N, Alves, M, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Bedini, L, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Burigana, C, Butler, R, Cabella, P, Cardoso, J, Chen, X, Chiang, L, Christensen, P, Clements, D, Colombi, S, Colombo, L, Coulais, A, Cuttaia, F, Davies, R, Davis, R, De Bernardis, P, De Gasperis, G, De Zotti, G, Delabrouille, J, Dickinson, C, Diego, J, Dobler, G, Dole, H, Donzelli, S, Dore, O, Douspis, M, Dupac, X, Ensslin, T, Finelli, F, Forni, O, Frailis, M, Franceschi, E, Galeotta, S, Ganga, K, Genova-Santos, R, Ghosh, T, Giard, M, Giardino, G, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Hernandez-Monteagudo, C, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Hovest, W, Huffenberger, K, Jaffe, T, Jaffe, A, Juvela, M, Keihanen, E, Keskitalo, R, Kisner, T, Knoche, J, Kunz, M, Kurki-Suonio, H, Lagache, G, Lahteenmaki, A, Lamarre, J, Lasenby, A, Lawrence, C, Leach, S, Leonardi, R, Lilje, P, Linden-Vørnle, M, Linden-Vornle, M, Lubin, P, Macias-Perez, J, Maffei, B, Maino, D, Mandolesi, N, Maris, M, Marshall, D, Martin, P, Martinez-Gonzalez, E, Masi, S, Massardi, M, Matarrese, S, Mazzotta, P, Melchiorri, A, Mennella, A, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Nørgaard-Nielsen, H, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Oxborrow, C, Pajot, F, Paladini, R, Paoletti, D, Peel, M, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Popa, L, Poutanen, T, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reach, W, Rebolo, R, Reinecke, M, Renault, C, Ricciardi, S, Ristorcelli, I, Rocha, G, Rosset, C, Rubino-Martin, J, Rusholme, B, Salerno, E, Sandri, M, Savini, G, Scott, D, Spencer, L, Stolyarov, V, Sudiwala, R, Suur-Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Tibbs, C, Toffolatti, L, Tomasi, M, Tristram, M, Valenziano, L, Van Tent, B, Varis, J, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Ysard, N, Yvon, D, Zacchei, A, Zonca, A, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Hélium : du fondamental aux applications (NEEL - HELFA), Jodrell Bank Centre for Astrophysics (JBCA), University of Manchester [Manchester], Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Planck Collaboration, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Département de Physique des Particules (ex SPP) (DPP), P. A. R., Ade, N., Aghanim, M. I. R., Alve, M., Arnaud, M., Ashdown, F., Atrio Barandela, J., Aumont, C., Baccigalupi, A., Balbi, A. J., Banday, R. B., Barreiro, J. G., Bartlett, E., Battaner, L., Bedini, K., Benabed, A., Benoît, J. P., Bernard, M., Bersanelli, A., Bonaldi, J. R., Bond, J., Borrill, F. R., Bouchet, F., Boulanger, C., Burigana, R. C., Butler, P., Cabella, J. F., Cardoso, X., Chen, L. Y., Chiang, P. R., Christensen, D. L., Clement, S., Colombi, L. P. L., Colombo, A., Coulai, F., Cuttaia, R. D., Davie, R. J., Davi, P., de Bernardi, G., de Gasperi, G., de Zotti, J., Delabrouille, C., Dickinson, J. M., Diego, G., Dobler, H., Dole, S., Donzelli, O., Doré, M., Douspi, X., Dupac, T. A., Enßlin, F., Finelli, O., Forni, M., Fraili, E., Franceschi, S., Galeotta, K., Ganga, R. T., Génova Santo, T., Ghosh, M., Giard, G., Giardino, Y., Giraud Héraud, J., González Nuevo, K. M., Górski, Gregorio, Anna, A., Gruppuso, F. K., Hansen, D., Harrison, C., Hernández Monteagudo, S. R., Hildebrandt, E., Hivon, M., Hobson, W. A., Holme, A., Hornstrup, W., Hovest, K. M., Huffenberger, T. R., Jaffe, A. H., Jaffe, M., Juvela, E., Keihänen, R., Keskitalo, T. S., Kisner, J., Knoche, M., Kunz, H., Kurki Suonio, G., Lagache, A., Lähteenmäki, J. M., Lamarre, A., Lasenby, C. R., Lawrence, S., Leach, R., Leonardi, P. B., Lilje, M., Linden Vørnle, P. M., Lubin, J. F., Macías Pérez, B., Maffei, D., Maino, N., Mandolesi, M., Mari, D. J., Marshall, P. G., Martin, E., Martínez González, S., Masi, M., Massardi, S., Matarrese, P., Mazzotta, A., Melchiorri, A., Mennella, S., Mitra, M. A., Miville Deschêne, A., Moneti, L., Montier, G., Morgante, D., Mortlock, D., Munshi, J. A., Murphy, P., Naselsky, F., Nati, P., Natoli, H. U., Nørgaard Nielsen, F., Noviello, D., Novikov, I., Novikov, S., Osborne, C. A., Oxborrow, F., Pajot, R., Paladini, D., Paoletti, M., Peel, L., Perotto, F., Perrotta, F., Piacentini, M., Piat, E., Pierpaoli, D., Pietrobon, S., Plaszczynski, E., Pointecouteau, G., Polenta, L., Popa, T., Poutanen, G. W., Pratt, S., Prunet, J. L., Puget, J. P., Rachen, W. T., Reach, R., Rebolo, M., Reinecke, C., Renault, S., Ricciardi, I., Ristorcelli, G., Rocha, C., Rosset, J. A., Rubiño Martín, B., Rusholme, E., Salerno, M., Sandri, G., Savini, D., Scott, L., Spencer, V., Stolyarov, R., Sudiwala, A. S., Suur Uski, J. F., Sygnet, J. A., Tauber, L., Terenzi, C. T., Tibb, L., Toffolatti, M., Tomasi, M., Tristram, L., Valenziano, B., Van Tent, J., Vari, P., Vielva, F., Villa, N., Vittorio, L. A., Wade, B. D., Wandelt, N., Ysard, D., Yvon, A., Zacchei, A., Zonca, Anne Lähteenmäki Group, Aalto-yliopisto, Aalto University, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Jodrell Bank Centre for Astrophysics, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, HELFA - Hélium : du fondamental aux applications, Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Department of Physics, and Helsinki Institute of Physics

Subjects
CENTIMETER-WAVE CONTINUUM, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astronomy, Anomalous microwave emission, WMAP OBSERVATIONS, Flux, Astrophysics, Galaxy: general - radio continuum, 01 natural sciences, 7. Clean energy, ANOMALOUS DUST, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Galaxy: general, Radiation mechanisms: general, Radio continuum: ISM, SPINNING DUST EMISSION, 010303 astronomy & astrophysics, general [Radiation mechanisms], Physics, general - radio continuum [Galaxy], Line-of-sight, FOREGROUND EMISSION, general [ISM-radiation mechanism], Component separation, J.2 PHYSICAL SCIENCES AND ENGINEERING. Astronomy, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, symbols, Electron temperature, Correlated component analysis, Galaxy: general – radio continuum: ISM – radiation mechanis ms: general, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), H-ALPHA, INFRARED-EMISSION, Astrophysics::High Energy Astrophysical Phenomena, education, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, Component analysis, Position (vector), 0103 physical sciences, Thermal, PRE-LAUNCH STATUS, radio continuum: ISM, radiation mechanisms: general, Planck, general – radio continuum: ISM – radiation mechanis ms: general [Galaxy], general [Galaxy], Astrophysics::Galaxy Astrophysics, radio continuum: ism, galaxy: general, 010308 nuclear & particles physics, Astronomy and Astrophysics, 115 Astronomy, Space science, MICROWAVE-ANISOTROPY-PROBE, Astrophysics - Astrophysics of Galaxies, ISM [Radio continuum], Frequency spectrum, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), TENTATIVE DETECTION, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ISM-radiation mechanism: general
Abstract

We perform an analysis of the diffuse low-frequency Galactic components in the southern part of the Gould Belt system (130◦ ≤ l ≤ 230◦ and −50◦ ≤ b ≤ −10◦). Strong ultra-violet flux coming from the Gould Belt super-association is responsible for bright diffuse foregrounds that we observe from our position inside the system and that can help us improve our knowledge of the Galactic emission. Free-free emission and anomalous microwave emission (AME) are the dominant components at low frequencies (ν < 40 GHz), while synchrotron emission is very smooth and faint. We separated diffuse free-free emission and AME from synchrotron emission and thermal dust emission by using Planck data, complemented by ancillary data, using the correlated component analysis (CCA) component-separation method and we compared our results with the results of cross-correlation of foreground templates with the frequency maps. We estimated the electron temperature Te from Hα and free-free emission using two methods (temperature-temperature plot and cross-correlation) and obtained Te ranging from 3100 to 5200 K for an effective fraction of absorbing dust along the line of sight of 30% ( fd = 0.3). We estimated the frequency spectrum of the diffuse AME and recovered a peak frequency (in flux density units) of 25.5±1.5 GHz.We verified the reliability of this result with realistic simulations that include biases in the spectral model for the AME and in the free-free template. By combining physical models for vibrational and rotational dust emission and adding the constraints from the thermal dust spectrum from Planck and IRAS, we are able to present a good description of the AME frequency spectrum for plausible values of the local density and radiation field., The development of Planck has been supported by: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN and JA (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and PRACE (EU).

Published
2013
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