CMB anomalies and the effects of local features of the inflaton potential

Autor: Alexander Gallego Cadavid, Antonio Enea Romano, Stefano Gariazzo

Publikováno v: European Physical Journal C: Particles and Fields, Vol 77, Iss 4, Pp 1-9 (2017)

Abstract Recent analysis of the WMAP and Planck data have shown the presence of a dip and a bump in the spectrum of primordial perturbations at the scales $$k=0.002$$ k = 0.002 Mpc $${}^{-1}$$ - 1 and $$k=0.0035$$ k = 0.0035 Mpc $${}^{-1}$$ - 1 , res

Externí odkaz: https://doaj.org/article/3180c6d4548b4b499fd0d5ffa1cbcce9

NANOGrav results and LIGO-Virgo primordial black holes in axion-like curvaton model

Autor: Masahiro Kawasaki, Keisuke Inomata, Kyohei Mukaida, Tsutomu T. Yanagida

Publikováno v: Physical review letters 126(13), 131301 (2021). doi:10.1103/PhysRevLett.126.131301

Physical review letters 126(13), 131301 (1-7) (2021). doi:10.1103/PhysRevLett.126.131301
We discuss a possible connection between the recent NANOGrav results and the primordial black holes (PBHs) for the LIGO-Virgo events. In particular, we focu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::459958ba796a8b7074ce54116c2c6d9d

Planck 2018 results

Autor: Planck Collaboration, Akrami, Y., Basak, S., Ma, Y.-Z., Macías-Pérez, J. F., Maggio, G., Maino, D., Mandolesi, N., Mangilli, A., Marcos-Caballero, A., Maris, M., Martin, P. G., Martínez-González, E., Benabed, K., Matarrese, S., Mauri, N., McEwen, J. D., Meerburg, P. D., Meinhold, P. R., Melchiorri, A., Mennella, A., Migliaccio, M., Mitra, S., Miville-Deschênes, M. A., Bernard, J.-P., Molinari, D., Moneti, A., Montier, L., Morgante, G., Moss, A., Münchmeyer, M., Natoli, P., Nørgaard-Nielsen, H. U., Pagano, L., Paoletti, D., Bersanelli, M., Partridge, B., Patanchon, G., Peiris, H. V., Perrotta, F., Pettorino, V., Piacentini, F., Polastri, L., Polenta, G., Puget, J.-L., Rachen, J. P., Bielewicz, P., Reinecke, M., Remazeilles, M., Renzi, A., Rocha, G., Rosset, C., Roudier, G., Rubiño-Martín, Jose Alberto, Ruiz-Granados, B., Salvati, L., Sandri, M., Bock, J. J., Savelainen, M., Scott, D., Shellard, E. P. S., Shiraishi, M., Sirignano, C., Sirri, G., Spencer, L. D., Sunyaev, R., Suur-Uski, A. S., Tauber, J. A., Bond, J. R., Tavagnacco, D., Tenti, M., Toffolatti, L., Tomasi, M., Trombetti, T., Valiviita, J., Van Tent, Bartjan, Vielva, P., Villa, F., Vittorio, N., Borrill, J., Wandelt, B. D., Wehus, I. K., White, S. D. M., Zacchei, A., Zibin, J. P., Zonca, A., Bouchet, F. R., Boulanger, F., Arroja, F., Bucher, M., Burigana, C., Butler, R. C., Calabrese, E., Cardoso, J.-F., Carron, J., Challinor, A., Chiang, H. C., Colombo, L. P. L., Combet, C., Ashdown, M., Contreras, D., Crill, B. P., Cuttaia, F., de Bernardis, Paolo, de Zotti, Gianfranco, Delabrouille, J., Delouis, J.-M., Di Valentino, Eleonora, Diego, J. M., Donzelli, S., Aumont, J., Doré, O., Douspis, M., Ducout, A., Dupac, X., Dusini, S., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Fantaye, Y., Baccigalupi, C., Fergusson, J., Fernandez-Cobos, R., Finelli, F., Forastieri, F., Frailis, M., Franceschi, E., Frolov, A., Galeotta, S., Galli, S., Ganga, K., Ballardini, M., Gauthier, C., Génova-Santos, R. T., Gerbino, M., Ghosh, T., González-Nuevo, Joaquin, Górski, K. M., Gratton, S., Gruppuso, A., Gudmundsson, J. E., Hamann, J., Banday, A. J., Handley, W., Hansen, F. K., Herranz, D., Hivon, E., Hooper, Deanna Charlotte, Huang, Z., Jaffe, A. H., Jones, W. C., Keihänen, E., Keskitalo, R., Barreiro, R. B., Kiiveri, K., Kim, J., Kisner, T. S., Krachmalnicoff, N., Kunz, M., Kurki-Suonio, H., Lagache, G., Lamarre, J.-M., Lasenby, A., Lattanzi, M., Bartolo, N., Lawrence, C. R., Le Jeune, M., Lesgourgues, Julien, Levrier, F., Lewis, A., Liguori, M., Lilje, P. B., Lindholm, V., López-Caniego, Marcos, Lubin, P. M.

Publikováno v: Astronomy and astrophysics 641, A10 (2020). doi:10.1051/0004-6361/201833887 special issue: "Planck 2018 results"

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______791::320ab7161ae289a274de54176cbe2e2c

Greybody Factors of 2+1 Dimensional Charged Black Hole With Dilaton Field

Autor: Talib, Shakhawan Rafiq Hama

In this thesis, we analytically study the scalar perturbation of non-asymptotically flat 2+1 dimensional charged dilaton black holes. In particular, we show that radial wave equation is solved in terms of the hypergeometric functions. The analytical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2789::d47e4328d68976a46f7082fa7f89795f
https://hdl.handle.net/11129/2992

Stability of Reissner-Nordström black hole in de Sitter background under charged scalar perturbation

Autor: Bin Wang, C. E. Pellicer, Zhiying Zhu, Elcio Abdalla, Shao-Jun Zhang

Publikováno v: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN

We find a new instability in the four-dimensional Reissner-Nordstrom-de Sitter black holes against charged scalar perturbations with vanishing angular momentum, $l=0$. We show that such an instability is caused by superradiance. The instability does

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::610774fc97c55a4a8a7b20219dbb3d95
https://repositorio.ufrn.br/handle/123456789/45219