Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Boudaud, Mathieu"'
Publikováno v:
JCAP08(2021)053
Primordial black holes may have been produced in the early stages of the thermal history of the Universe after cosmic inflation. If so, dark matter in the form of elementary particles can be subsequently accreted around these objects, in particular w
Externí odkaz:
http://arxiv.org/abs/2106.07480
Autor:
Génolini, Yoann, Boudaud, Mathieu, Cirelli, Marco, Derome, Laurent, Lavalle, Julien, Maurin, David, Salati, Pierre, Weinrich, Nathanael
Publikováno v:
Phys. Rev. D 104, 083005 (2021)
Galactic charged cosmic rays (notably electrons, positrons, antiprotons and light antinuclei) are powerful probes of dark matter annihilation or decay, in particular for candidates heavier than a few MeV or tiny evaporating primordial black holes. Re
Externí odkaz:
http://arxiv.org/abs/2103.04108
Publikováno v:
A&A 639, A131 (2020)
The AMS-02 experiment measured several secondary-to-primary ratios enabling a detailed study of Galactic cosmic-ray transport. We constrain previously derived benchmark scenarios (based on AMS-02 B/C data only) using other secondary-to-primary ratios
Externí odkaz:
http://arxiv.org/abs/2002.11406
Autor:
Boudaud, Mathieu, Génolini, Yoann, Derome, Laurent, Lavalle, Julien, Maurin, David, Salati, Pierre, Serpico, Pasquale D.
Publikováno v:
Phys. Rev. Research 2, 023022 (2020)
The AMS-02 experiment has ushered cosmic-ray physics into precision era. In a companion paper, we designed an improved method to calibrate propagation models on B/C data. Here we provide a robust prediction of the $\bar{p}$ flux, accounting for sever
Externí odkaz:
http://arxiv.org/abs/1906.07119
Autor:
Genolini, Yoann, Boudaud, Mathieu, Batista, Pedro Ivo, Caroff, Sami, Derome, Laurent, Lavalle, Julien, Marcowith, Alexandre, Maurin, David, Poireau, Vincent, Poulin, Vivian, Rosier, Sylvie, Salati, Pierre, Serpico, Pasquale Dario, Vecchi, Manuela
Publikováno v:
Phys. Rev. D 99, 123028 (2019)
This article aims at establishing new benchmark scenarios for Galactic cosmic-ray propagation in the GV-TV rigidity range, based on fits to the AMS-02 B/C data with the USINE v3.5 propagation code. We employ a new fitting procedure, cautiously taking
Externí odkaz:
http://arxiv.org/abs/1904.08917
Publikováno v:
Phys. Rev. D 99, 061302 (2019)
We recently proposed a method to constrain $s$-wave annihilating MeV dark matter from a combination of the Voyager 1 and the AMS-02 data on cosmic-ray electrons and positrons. Voyager 1 actually provides an unprecedented probe of dark matter annihila
Externí odkaz:
http://arxiv.org/abs/1810.01680
Autor:
Boudaud, Mathieu
La matière noire astronomique est une composante essentielle de l'univers. Depuis sa mise en évidence en 1933 par Fritz Zwicky dans l'amas de Coma, sa présence au sein des galaxies et des amas de galaxies a été largement confirmée. Les observat
Externí odkaz:
http://www.theses.fr/2016GREAY050/document
Autor:
Boudaud, Mathieu, Cirelli, Marco
Publikováno v:
Phys. Rev. Lett. 122, 041104 (2019)
Primordial Black Holes (PBHs) with a mass $M \lesssim {10^{17}}$g are expected to inject sub-GeV electrons and positrons in the Galaxy via Hawking radiation. These cosmic rays are shielded by the solar magnetic field for Earth-bound detectors, but no
Externí odkaz:
http://arxiv.org/abs/1807.03075
Autor:
Genolini, Yoann, Serpico, Pasquale D., Boudaud, Mathieu, Caroff, Sami, Poulin, Vivian, Derome, Laurent, Lavalle, Julien, Maurin, David, Poireau, Vincent, Rosier, Sylvie, Salati, Pierre, Vecchi, Manuela
Publikováno v:
Phys. Rev. Lett. 119, 241101 (2017)
Using cosmic-ray boron to carbon ratio (B/C) data recently released by the AMS-02 experiment, we find tantalizing indications ({\it decisive evidence}, in Bayesian terms) in favor of a diffusive origin for the broken power-law spectra found in proton
Externí odkaz:
http://arxiv.org/abs/1706.09812
Publikováno v:
Phys. Rev. Lett. 119, 021103 (2017)
MeV dark matter (DM) particles annihilating or decaying to electron-positron pairs cannot, in principle, be observed via local cosmic-ray (CR) measurements because of the shielding solar magnetic field. In this letter, we take advantage of spacecraft
Externí odkaz:
http://arxiv.org/abs/1612.07698