Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Woodfinden, A."'
Autor:
Radinović, Slađana, Winther, Hans A., Nadathur, Seshadri, Percival, Will J., Paillas, Enrique, Fraser, Tristan Sohrab, Massara, Elena, Woodfinden, Alex
Publikováno v:
A&A 691, A39 (2024)
Under the assumption of statistical isotropy, and in the absence of directional selection effects, a stack of voids is expected to be spherically symmetric, which makes it an excellent object to use for an Alcock-Paczy\'nski (AP) test. This is common
Externí odkaz:
http://arxiv.org/abs/2407.02699
We introduce a new method for measuring the Hubble parameter from low-redshift large-scale observations that is independent of the comoving sound horizon. The method uses the baryon-to-photon ratio determined by the primordial deuterium abundance, to
Externí odkaz:
http://arxiv.org/abs/2403.19227
Autor:
Woodfinden, Alex, Percival, Will J., Nadathur, Seshadri, Winther, Hans A., Fraser, T. S., Massara, Elena, Paillas, Enrique, Radinović, Slađana
We present the cosmological implications of measurements of void-galaxy and galaxy-galaxy clustering from the Sloan Digital Sky Survey (SDSS) Main Galaxy Sample (MGS), Baryon Oscillation Spectroscopic Survey (BOSS), and extended BOSS (eBOSS) luminous
Externí odkaz:
http://arxiv.org/abs/2303.06143
Autor:
Radinović, S., Nadathur, S., Winther, H. -A., Percival, W. J., Woodfinden, A., Massara, E., Paillas, E., Contarini, S., Hamaus, N., Kovacs, A., Pisani, A., Verza, G., Aubert, M., Amara, A., Auricchio, N., Baldi, M., Bonino, D., Branchini, E., Brescia, M., Camera, S., Capobianco, V., Carbone, C., Cardone, V. F., Carretero, J., Castellano, M., Cavuoti, S., Cimatti, A., Cledassou, R., Congedo, G., Conversi, L., Copin, Y., Corcione, L., Courbin, F., Da Silva, A., Douspis, M., Dubath, F., Dupac, X., Farrens, S., Ferriol, S., Fosalba, P., Frailis, M., Franceschi, E., Fumana, M., Galeotta, S., Garilli, B., Gillard, W., Gillis, B., Giocoli, C., Grazian, A., Grupp, F., Haugan, S. V. H., Holmes, W., Hornstrup, A., Jahnke, K., Kümmel, M., Kiessling, A., Kilbinger, M., Kitching, T., Kurki-Suonio, H., Ligori, S., Lilje, P. B., Lloro, I., Maiorano, E., Mansutti, O., Marggraf, O., Markovic, K., Marulli, F., Massey, R., Mei, S., Melchior, M., Mellier, Y., Meneghetti, M., Merlin, E., Meylan, G., Moresco, M., Moscardini, L., Niemi, S. -M., Nightingale, J. W., Nutma, T., Padilla, C., Paltani, S., Pasian, F., Pedersen, K., Pettorino, V., Pires, S., Polenta, G., Poncet, M., Popa, L. A., Pozzetti, L., Raison, F., Renzi, A., Rhodes, J., Riccio, G., Romelli, E., Roncarelli, M., Rosset, C., Saglia, R., Sapone, D., Sartoris, B., Schneider, P., Secroun, A., Seidel, G., Serrano, S., Sirignano, C., Sirri, G., Stanco, L., Starck, J. -L., Surace, C., Tallada-Crespí, P., Tereno, I., Toledo-Moreo, R., Torradeflot, F., Tutusaus, I., Valentijn, E. A., Valenziano, L., Vassallo, T., Wang, Y., Weller, J., Zamorani, G., Zoubian, J., Scottez, V.
Publikováno v:
A&A 677, A78 (2023)
We investigate the cosmological constraints that can be expected from measurement of the cross-correlation of galaxies with cosmic voids identified in the Euclid spectroscopic survey, which will include spectroscopic information for tens of millions
Externí odkaz:
http://arxiv.org/abs/2302.05302
Autor:
Massara, Elena, Percival, Will J., Dalal, Neal, Nadathur, Seshadri, Radinović, Slađana, Winther, Hans A., Woodfinden, Alex
The velocity profile of galaxies around voids is a key ingredient for redshift space distortion (RSD) measurements made using the void-galaxy correlation function. In this paper we use simulations to test whether the velocity profile of the tracers u
Externí odkaz:
http://arxiv.org/abs/2206.14120
Autor:
Woodfinden, Alex, Nadathur, Seshadri, Percival, Will J., Radinović, Slađana, Massara, Elena, Winther, Hans A.
Publikováno v:
MNRAS, 2022, Vol 516, Issue 3, 4307-4323
We present measurements of the anisotropic cross-correlation of galaxies and cosmic voids in data from the Sloan Digital Sky Survey Main Galaxy Sample (MGS), Baryon Oscillation Spectroscopic Survey (BOSS) and extended BOSS (eBOSS) luminous red galaxy
Externí odkaz:
http://arxiv.org/abs/2205.06258
Autor:
West, J. L., Henriksen, R. N., Ferrière, K., Woodfinden, A., Jaffe, T., Gaensler, B. M., Irwin, J. A.
We search for observational signatures of magnetic helicity in data from all-sky radio polarization surveys of the Milky Way Galaxy. Such a detection would help confirm the dynamo origin of the field and may provide new observational constraints for
Externí odkaz:
http://arxiv.org/abs/2010.00105
Autor:
Nadathur, Seshadri, Woodfinden, Alex, Percival, Will J., Aubert, Marie, Bautista, Julian, Dawson, Kyle, Escoffier, Stéphanie, Fromenteau, Sebastien, Gil-Marín, Héctor, Rich, James, Ross, Ashley J., Rossi, Graziano, Magaña, Mariana Vargas, Brownstein, Joel R., Schneider, Donald P.
We present an analysis of the anisotropic redshift-space void-galaxy correlation in configuration space using the Sloan Digital Sky Survey extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 16 luminous red galaxy (LRG) sample. This
Externí odkaz:
http://arxiv.org/abs/2008.06060
Autor:
Krause, Marita, Irwin, Judith, Schmidt, Philip, Stein, Yelena, Miskolczi, Arpad, Mora-Partiarroyo, Silvia Carolina, Wiegert, Theresa, Beck, Rainer, Stil, Jeroen M., Heald, George, Li, Jiang-Tao, Damas-Segovia, Ancor, Vargas, Carlos J., Rand, Richard J., West, Jennifer, Walterbos, Rene A. M., Dettmar, Ralf-Jürgen, English, Jayanne, Woodfinden, Alex
Publikováno v:
A&A 639, A112 (2020)
Context. The magnetic field in spiral galaxies is known to have a large-scale spiral structure along the galactic disk and is observed as X-shaped in the halo of some galaxies. While the disk field can be well explained by dynamo action, the 3-dimens
Externí odkaz:
http://arxiv.org/abs/2004.14383
Rotation measure (RM) synthesis maps of NGC 4631 show remarkable sign reversals with distance from the minor axis in the northern halo of the galaxy on kpc scales. To explain this new phenomenon, we solve the dynamo equations under the assumption of
Externí odkaz:
http://arxiv.org/abs/1905.13028