Výsledky vyhledávání - "anisotropy: dipole"

Do supernovae indicate an accelerating universe?

Autor: Subir Sarkar, Roya Mohayaee, Mohamed Rameez

Publikováno v: Eur.Phys.J.ST
Eur.Phys.J.ST, 2021, 230 (9), pp.2067-2076. ⟨10.1140/epjs/s11734-021-00199-6⟩

In the late 1990's, observations of 93 Type Ia supernovae were analysed in the framework of the FLRW cosmology assuming these to be `standard(isable) candles'. It was thus inferred that the Hubble expansion rate is accelerating as if driven by a posi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a373ebf21b6b185ec73783d7d94195f1
https://doi.org/10.1140/epjs/s11734-021-00199-6

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What can be learnt from UHECR anisotropies observations? Paper I : large-scale anisotropies and composition features

Autor: D. Allard, J. Aublin, B. Baret, E. Parizot

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2022, 664, pp.A120. ⟨10.1051/0004-6361/202142491⟩

We investigate the implications of the current data regarding large scale anisotropies, and examine to what extent they can be used to constrain the origin of UHECRs and the astrophysical parameters of the source scenarios. We discuss the possibility

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dd76bc3d76853b3e213091171fcb325
https://hal.archives-ouvertes.fr/hal-03418744

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Stochastic transport of high-energy particles through a turbulent plasma

Publikováno v: The Astrophysical Journal
The Astrophysical Journal, 2020
The Astrophysical Journal, American Astronomical Society, 2020

The interplay between charged particles and turbulent magnetic fields is crucial to understanding how cosmic rays propagate through space. A key parameter which controls this interplay is the ratio of the particle gyroradius to the correlation length

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::4efae06b80077e26b9d5b9fa20f9c55e
https://hal.science/hal-03026111/file/main-stochastic-transport.pdf

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Cosmic-Ray Anisotropy from Large Scale Structure and the effect of magnetic horizons

Autor: Yehuda Hoffman, Noemie Globus, Edoardo Carlesi, Tsvi Piran, Daniel Pomarède

Publikováno v: Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2019, 484 (3), pp.4167-4173. ⟨10.1093/mnras/stz164⟩
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2019, 484 (3), pp.4167-4173. ⟨10.1093/mnras/stz164⟩

Motivated by the ~7 % dipole anisotropy in the distribution of ultra-high energy cosmic-rays (UHECRs) above 8 EeV, we explore the anisotropy induced by the large scale structure, using constrained simulations of the local Universe and taking into acc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fabae741a7dac7e4aed3c03c3d7d2c37
https://hal.archives-ouvertes.fr/hal-01861897

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A Search for Cosmic-ray Proton Anisotropy with the Fermi Large Area Telescope

Autor: Eleonora Troja, Soebur Razzaque, Ronaldo Bellazzini, Giacomo Principe, F. Piron, G. Chiaro, M. Kuss, Abhishek Desai, Kazuhiko Hayashi, Regina Caputo, T. A. Porter, E. Orlando, Dario Gasparrini, Hiroyasu Tajima, Keith Bechtol, S. Maldera, Stefano Ciprini, Ioannis Liodakis, E. J. Siskind, Francesco Longo, G. Martí-Devesa, Marco Ajello, J. B. Thayer, S. Rainò, Tsunefumi Mizuno, Matthew Meehan, Olaf Reimer, D. Horan, V. S. Paliya, D. Serini, Diego F. Torres, M. Razzano, Yasushi Fukazawa, Filippo D'Ammando, A. Reimer, Justin Vandenbroucke, G. Jóhannesson, F. de Palma, Manuel Meyer, Alessandro Cuoco, Guido Barbiellini, P. Fusco, I. Mereu, T. J. Brandt, Melissa Pesce-Rollins, Seth Digel, David A. Green, S. J. Fegan, Elizabeth Hays, Peter F. Michelson, Marcello Giroletti, D. J. Suson, S. Cutini, J. W. Hewitt, Eric Nuss, Sina Chen, Massimo Persic, Carmelo Sgrò, Riccardo Rando, G. Spandre, N. Di Lalla, Luca Baldini, Sylvain Guiriec, Mn Mazziotta, D. Costantin, Stephan Zimmer, David Paneque, Luca Latronico, P. de la Torre Luque, Elisabetta Bissaldi, Stefan Funk, Denis Bastieri, Eugenio Bottacini, Alberto Manfreda, Roger Blandford, Nicola Omodei, Johann Cohen-Tanugi, M. Orienti, L. Di Venere, F. Loparco, Nicola Giglietto, Aaron Dominguez, I. A. Grenier, E. Cavazzuti, M. Yassine, R. Bonino, Nestor Mirabal, P. Lubrano, S. Buson, J. Li, Matteo Negro, A. Morselli, R. A. Cameron, P. Bruel, Warit Mitthumsiri, P. Spinelli, Francesco Giordano, F. Gargano

Publikováno v: Astrophys.J.
Astrophys.J., 2019, 883 (1), pp.33. ⟨10.3847/1538-4357/ab3a2e⟩
The astrophysical journal / 1 883(1), 33-(2019). doi:10.3847/1538-4357/ab3a2e

The Fermi Large Area Telescope (LAT) has amassed a large data set of primary cosmic-ray protons throughout its mission. The LAT's wide field of view and full-sky survey capabilities make it an excellent instrument for studying cosmic-ray anisotropy.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::734468d1e1219761c1b46c7286b95b6c
https://hal.archives-ouvertes.fr/hal-02080724

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Transport of High-energy Charged Particles through Spatially Intermittent Turbulent Magnetic Fields

Publikováno v: Astrophys.J.
Astrophys.J., 2020, 892, pp.114. ⟨10.3847/1538-4357/ab7a19⟩
Astrophysical Journal

Identifying the sources of the highest energy cosmic rays requires understanding how they are deflected by the stochastic, spatially intermittent intergalactic magnetic field. Here we report measurements of energetic charged-particle propagation thro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aad8b62614d112f5112d4aa14da0abf9
https://doi.org/10.3847/1538-4357/ab7a19

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Where are the Ultra High Energy Cosmic Ray (UHECR) originated?

Autor: Daniele Fargion, Maxim Yu. Khlopov, Pier Giorgio De Sanctis Lucentini

Publikováno v: PoS
12th Frascati Workshop on Multifrequency Behaviour of High Energy Cosmic Sources
12th Frascati Workshop on Multifrequency Behaviour of High Energy Cosmic Sources, Jun 2017, Palermo, Italy. pp.006, ⟨10.22323/1.306.0006⟩
12th Frascati Workshop on Multifrequency Behaviour of High Energy Cosmic Sources, Jun 2017, Palermo, Italy. PoS, MULTIF2017, pp.006, 2018, 〈10.22323/1.306.0006〉

We consider the recent results on UHECR (Ultra High Energy Cosmic Ray) composition and their distribution in the sky from ten EeV energy (the dipole anisotropy) up to the highest UHECR energies and their clustering maps: UHECR have been found mostly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ffde337cb8fc78a52156455598d950f
https://hal.archives-ouvertes.fr/hal-01807337

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Search for Cosmic-Ray Electron and Positron Anisotropies with Seven Years of Fermi Large Area Telescope Data

Autor: Abdollahi, S., Ackermann, Markus, Bonino, R., Bottacini, E., Brandt, T. J., Bruel, P., Buson, S., Caragiulo, M., Cavazzuti, E., Chekhtman, A., Ciprini, S., Costanza, Francesco, Ajello, M., Cuoco, A., Cutini, S., D’Ammando, F., de Palma, F., Desiante, R., Digel, S. W., Di Lalla, N., Di Mauro, M., Di Venere, L., Donaggio, B., Albert, A., Drell, P. S., Favuzzi, C., Focke, W. B., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Atwood, W. B., Giroletti, M., Green, D., Guiriec, S., Harding, A. K., Jogler, T., Jóhannesson, G., Kamae, T., Kuss, M., Larsson, S., Latronico, L., Baldini, L., Li, J., Longo, F., Loparco, F., Lubrano, P., Magill, J. D., Malyshev, D., Manfreda, A., Mazziotta, M. N., Meehan, M., Michelson, P. F., Barbiellini, G., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monzani, M. E., Morselli, A., Negro, M., Nuss, E., Ohsugi, T., Omodei, N., Paneque, D., Bellazzini, R., Perkins, J. S., Pesce-Rollins, M., Piron, F., Pivato, G., Principe, G., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Bissaldi, E., Sgrò, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Strong, A. W., Tajima, H., Thayer, J. B., Torres, D. F., Bloom, E. D., Troja, E., Vandenbroucke, J., Zaharijas, G., Zimmer, S., Fermi-LAT Collaboration

Publikováno v: Phys.Rev.Lett.
Phys.Rev.Lett., 2017, 118 (9), pp.091103. ⟨10.1103/PhysRevLett.118.091103⟩
Phys.Rev.Lett., 2017, 118 (9), pp.091103. 〈10.1103/PhysRevLett.118.091103〉
Physical review letters 118(9), 091103 (2017). doi:10.1103/PhysRevLett.118.091103
Physical Review Letters
Physical Review Letters, American Physical Society, 2017, 118 (9), pp.091103. ⟨10.1103/PhysRevLett.118.091103⟩

Physical review letters 118(9), 091103(2017). doi:10.1103/PhysRevLett.118.091103
The Large Area Telescope on board the Fermi Gamma-ray Space Telescope has collected the largest ever sample of high-energy cosmic-ray electron and positron events s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3c837a51da23b660afe9dd9a3834cf8
http://hdl.handle.net/11577/3237901

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