Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Eskilt, J. R."'
Autor:
Eskilt, J. R., Lee, K., Watts, D. J., Anshul, V., Aurlien, R., Basyrov, A., Bersanelli, M., Colombo, L. P. L., Eriksen, H. K., Fornazier, K. S. F., Fuskeland, U., Galloway, M., Gjerløw, E., Hergt, L. T., Ihle, H. T., Lunde, J. G. S., Marins, A., Nerval, S. K., Paradiso, S., Rahman, F., San, M., Stutzer, N. -O., Wehus, I. K.
Publikováno v:
A&A 678, A169 (2023)
We implement support for a cosmological parameter estimation algorithm as proposed by Racine et al. (2016) in Commander, and quantify its computational efficiency and cost. For a semi-realistic simulation similar to Planck LFI 70 GHz, we find that th
Externí odkaz:
http://arxiv.org/abs/2306.15511
Autor:
Eskilt, J. R., Watts, D. J., Aurlien, R., Basyrov, A., Bersanelli, M., Brilenkov, M., Colombo, L. P. L., Eriksen, H. K., Fornazier, K. S. F., Franceschet, C., Fuskeland, U., Galloway, M., Gjerløw, E., Hensley, B., Hergt, L. T., Herman, D., Ihle, H. T., Lee, K., Lunde, J. G. S., Nerval, S. K., Paradiso, S., Patel, S. K., Rahman, F., Regnier, M., San, M., Sanyal, S., Stutzer, N. -O., Thommesen, H., Verma, A., Wehus, I. K., Zhou, Y.
Cosmic birefringence is a parity-violating effect that might have rotated the plane of linearly polarized light of the cosmic microwave background (CMB) by an angle $\beta$ since its emission. This has recently been measured to be non-zero at a stati
Externí odkaz:
http://arxiv.org/abs/2305.02268
Autor:
Watts, D. J., Basyrov, A., Eskilt, J. R., Galloway, M., Hergt, L. T., Herman, D., Ihle, H. T., Paradiso, S., Rahman, F., Thommesen, H., Aurlien, R., Bersanelli, M., Bianchi, L. A., Brilenkov, M., Colombo, L. P. L., Eriksen, H. K., Franceschet, C., Fuskeland, U., Gjerløw, E., Hensley, B., Hoerning, G. A., Lee, K., Lunde, J. G. S., Marins, A., Nerval, S. K., Patel, S. K., Regnier, M., San, M., Sanyal, S., Stutzer, N. -O., Verma, A., Wehus, I. K., Zhou, Y.
We present Cosmoglobe Data Release 1, which implements the first joint analysis of WMAP and Planck LFI time-ordered data, processed within a single Bayesian end-to-end framework. This framework builds directly on a similar analysis of the LFI measure
Externí odkaz:
http://arxiv.org/abs/2303.08095
Autor:
Diego-Palazuelos, P., Martínez-González, E., Vielva, P., Barreiro, R. B., Tristram, M., de la Hoz, E., Eskilt, J. R., Minami, Y., Sullivan, R. M., Banday, A. J., Górski, K. M., Keskitalo, R., Komatsu, E., Scott, D.
The polarization of the cosmic microwave background (CMB) can be used to search for parity-violating processes like that predicted by a Chern-Simons coupling to a light pseudoscalar field. Such an interaction rotates $E$ modes into $B$ modes in the o
Externí odkaz:
http://arxiv.org/abs/2210.07655
BeyondPlanck IV. On end-to-end simulations in CMB analysis -- Bayesian versus frequentist statistics
Autor:
Brilenkov, M., Fornazier, K. S. F., Hergt, L. T., Hoerning, G. A., Marins, A., Murokoshi, T., Rahman, F., Stutzer, N. -O., Zhou, Y., Abdalla, F. B., Andersen, K. J., Aurlien, R., Banerji, R., Basyrov, A., Battista, A., Bersanelli, M., Bertocco, S., Bollanos, S., Colombo, L. P. L., Eriksen, H. K., Eskilt, J. R., Foss, M. K., Franceschet, C., Fuskeland, U., Galeotta, S., Galloway, M., Gerakakis, S., Gjerlow, E., Hensley, B., Herman, D., Hoang, T. D., Ieronymaki, M., Ihle, H. T., Jewell, J. B., Karakci, A., Keihanen, E., Keskitalo, R., Maggio, G., Maino, D., Maris, M., Paradiso, S., Partridge, B., Reinecke, M., Suur-Uski, A. -S., Svalheim, T. L., Tavagnacco, D., Thommesen, H., Tomasi, M., Watts, D. J., Wehus, I. K., Zacchei, A.
Publikováno v:
A&A 675, A4 (2023)
End-to-end simulations play a key role in the analysis of any high-sensitivity CMB experiment, providing high-fidelity systematic error propagation capabilities unmatched by any other means. In this paper, we address an important issue regarding such
Externí odkaz:
http://arxiv.org/abs/2209.04437
Autor:
Basyrov, A., Suur-Uski, A. -S., Colombo, L. P. L., Eskilt, J. R., Paradiso, S., Andersen, K. J., Aurlien, R., Banerji, R., Bersanelli, M., Bertocco, S., Brilenkov, M., Carbone, M., Eriksen, H. K., Foss, M. K., Franceschet, C., Fuskeland, U., Galeotta, S., Galloway, M., Gerakakis, S., Gjerløw, E., Hensley, B., Herman, D., Iacobellis, M., Ieronymaki, M., Ihle, H. T., Jewell, J. B., Karakci, A., Keihänen, E., Keskitalo, R., Maggio, G., Maino, D., Maris, M., Partridge, B., Reinecke, M., Svalheim, T. L., Tavagnacco, D., Thommesen, H., Watts, D. J., Wehus, I. K., Zacchei, A.
Publikováno v:
A&A 675, A10 (2023)
We present Planck LFI frequency sky maps derived within the BeyondPlanck framework. This framework draws samples from a global posterior distribution that includes instrumental, astrophysical and cosmological parameters, and the main product is an en
Externí odkaz:
http://arxiv.org/abs/2208.14293
Autor:
Colombo, L. P. L., Eskilt, J. R., Paradiso, S., Thommesen, H., Andersen, K. J., Aurlien, R., Banerji, R., Bersanelli, M., Bertocco, S., Brilenkov, M., Carbone, M., Eriksen, H. K., Foss, M. K., Franceschet, C., Fuskeland, U., Galeotta, S., Galloway, M., Gerakakis, S., Gjerløw, E., Hensley, B., Herman, D., Iacobellis, M., Ieronymaki, M., Ihle, H. T., Jewell, J. B., Karakci, A., Keihänen, E., Keskitalo, R., Maggio, G., Maino, D., Maris, M., Partridge, B., Reinecke, M., Suur-Uski, A. -S., Svalheim, T. L., Tavagnacco, D., Watts, D. J., Wehus, I. K., Zacchei, A.
Publikováno v:
A&A 675, A11 (2023)
We present posterior sample-based cosmic microwave background (CMB) constraints from Planck LFI and WMAP observations derived through global end-to-end Bayesian processing. We use these samples to study correlations between CMB, foreground, and instr
Externí odkaz:
http://arxiv.org/abs/2208.14276
Autor:
Gerakakis, S., Brilenkov, M., Ieronymaki, M., San, M., Watts, D. J., Andersen, K. J., Aurlien, R., Banerji, R., Basyrov, A., Bersanelli, M., Bertocco, S., Carbone, M., Colombo, L. P. L., Eriksen, H. K., Eskilt, J. R., Foss, M. K., Franceschet, C., Fuskeland, U., Galeotta, S., Galloway, M., Gjerløw, E., Hensley, B., Herman, D., Iacobellis, M., Ihle, H. T., Jewell, J. B., Karakci, A., Keihänen, E., Keskitalo, R., Lunde, J. G. S., Maggio, G., Maino, D., Maris, M., Paradiso, S., Reinecke, M., Stutzer, N. -O., Suur-Uski, A. -S., Svalheim, T. L., Tavagnacco, D., Thommesen, H., Wehus, I. K., Zacchei, A.
The BeyondPlanck and Cosmoglobe collaborations have implemented the first integrated Bayesian end-to-end analysis pipeline for CMB experiments. The primary long-term motivation for this work is to develop a common analysis platform that supports effi
Externí odkaz:
http://arxiv.org/abs/2205.11262
Autor:
Paradiso, S., Colombo, L. P. L., Andersen, K. J., Aurlien, R., Banerji, R., Basyrov, A., Bersanelli, M., Bertocco, S., Brilenkov, M., Carbone, M., Eriksen, H. K., Eskilt, J. R., Foss, M. K., Franceschet, C., Fuskeland, U., Galeotta, S., Galloway, M., Gerakakis, S., Gjerløw, E., Hensley, B., Herman, D., Iacobellis, M., Ieronymaki, M., Ihle, H. T., Jewell, J. B., Karakci, A., Keihänen, E., Keskitalo, R., Maggio, G., Maino, D., Maris, M., Partridge, B., Reinecke, M., San, M., Suur-Uski, A. -S., Svalheim, T. L., Tavagnacco, D., Thommesen, H., Watts, D. J., Wehus, I. K., Zacchei, A.
Publikováno v:
A&A 675, A12 (2023)
We present cosmological parameter constraints as estimated using the Bayesian BeyondPlanck (BP) analysis framework. This method supports seamless end-to-end error propagation from raw time-ordered data to final cosmological parameters. As a first dem
Externí odkaz:
http://arxiv.org/abs/2205.10104
Autor:
Diego-Palazuelos, P., Eskilt, J. R., Minami, Y., Tristram, M., Sullivan, R. M., Banday, A. J., Barreiro, R. B., Eriksen, H. K., Górski, K. M., Keskitalo, R., Komatsu, E., Martínez-González, E., Scott, D., Vielva, P., Wehus, I. K.
We search for the signature of parity-violating physics in the Cosmic Microwave Background using Planck polarization data from the Public Release 4 (PR4 or $\mathtt{NPIPE}$). For nearly full-sky data, we initially find a birefringence angle $\beta=0.
Externí odkaz:
http://arxiv.org/abs/2203.04830