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41.
The Fermi Galactic Center GeV Excess and Implications for Dark Matter
Gabrijela Zaharijas, 2017, original scientific article

Found in: ključnih besedah
Summary of found: ... cosmic rays – Galaxy: bulge – Galaxy: center...
Keywords: cosmic rays – Galaxy: bulge – Galaxy: center – Galaxy: halo – gamma rays: general – ISM: general
Published: 13.07.2017; Views: 2439; Downloads: 0
.pdf Fulltext (7,21 MB)

42.
Astroparticle studies at the Pierre Auger Observatory
Lili Yang, invited lecture at foreign university

Abstract: The Pierre Auger Observatory (PAO), the world’s largest cosmic ray detector combines a large surface detector (SD) with an air fluorescence detector (FD). It is designed to observe extensive air showers (EAS) of billions of secondary particles induced by the UHECRs in the earths’ atmosphere. The “hybrid” design (i.e., detected simultaneously by SD and FD) provides wealth of information about shower development and excellent event reconstruction. Together with observations of UHECRs, the Surface Detector (SD) of the PAO is sensitive to UHE neutrinos through the observation of deeply initiated inclined down-going showers produced by neutrino interactions in the atmosphere, which method has been well established. On the other hand, high-energy photons can also be discriminated from background of charged cosmic rays based on their characters of the shower front. In this talk, I will give a review on recent results from PAO and introduce the ultra-high energy multi-messenger studies from PAO.
Found in: ključnih besedah
Summary of found: ...Pierre Auger Observatory (PAO), the world’s largest cosmic ray detector combines a large surface detector... ...be discriminated from background of charged cosmic rays based on their characters of the shower...
Keywords: Pierre Auger Observatory, cosmic rays, ultra-high energy
Published: 17.01.2018; Views: 1935; Downloads: 0
.pdf Fulltext (8,86 MB)
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43.
Very high-energy gamma-ray signature of ultrahigh-energy cosmic-ray acceleration in Centaurus A
Jagdish Joshi, Marlui Miranda, Lili Yang, Soebur Razzaque, 2017, published scientific conference contribution abstract

Abstract: The association of at least a dozen ultrahigh-energy cosmic-ray (UHECR) events with energy 54 EeV or higher detected by the Pierre Auger Observatory from the direction of Centaurus-A, the nearest radio galaxy, supports the scenario of UHECR acceleration in the jets of radio galaxies. Multiwavelength observations of Centaurus-A suggest that the inner jet is likely the site for particle acceleration, which emits in X-ray to very high-energy (VHE) gamma-ray. We model broadband spectral energy distribution with emission from shock-accelerated electrons and protons in a combined synchrotron-self-Compton and photo-hadronic scenario. The UHECR flux from Centaurus-A, required to explain Pierre Auger data, successfully explains observed VHE gamma rays as photo-hadronic emission.
Found in: ključnih besedah
Summary of found: ...Auger data, successfully explains observed VHE gamma rays as photo-hadronic emission....
Keywords: Centaurus A, gamma ray, cosmic rays
Published: 17.01.2018; Views: 1807; Downloads: 0
.pdf Fulltext (2,27 MB)

44.
45.
Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope
Gabrijela Zaharijas, 2017, original scientific article

Found in: ključnih besedah
Keywords: Fermi LAT, Cosmic rays
Published: 15.02.2018; Views: 1786; Downloads: 0
.pdf Fulltext (1,07 MB)

46.
47.
Dipolar anisotropy of cosmic rays above 8 EeV
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Oscar Taborda, 2017, published scientific conference contribution

Found in: ključnih besedah
Keywords: Pierre Auger Observatory, dipolar anisotropy, cosmic rays
Published: 16.02.2018; Views: 1673; Downloads: 106
.pdf Fulltext (411,21 KB)

48.
49.
Probing Lorentz symmetry with the Pierre Auger Observatory
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, D. Boncioli, 2017, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...Observatory, Lorentz invariance violation, ultra-high energy cosmic rays...
Keywords: Pierre Auger Observatory, Lorentz invariance violation, ultra-high energy cosmic rays
Published: 16.02.2018; Views: 1637; Downloads: 111
.pdf Fulltext (309,46 KB)

50.
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