Serguei Vorobiov - Academia.edu (original) (raw)

Uploads

Papers by Serguei Vorobiov

Research paper thumbnail of Performance of Silicon Photomultipliers for the Dual-Mirror Medium-Sized Telescopes of the Cherenkov Telescope Array

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Performance of the SST-1M telescope of the Cherenkov Telescope Array observatory

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), Aug 18, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Performance of a small size telescope (SST-1M) camera for gamma-ray astronomy with the Cherenkov Telescope Array

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Auger average scaler rate variability in 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Hess J1731-347

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Air-Shower Reconstruction at the Pierre Auger Observatory based on Deep Learning

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019), 2019

The surface detector array of the Pierre Auger Observatory measures the footprint of air showers ... more The surface detector array of the Pierre Auger Observatory measures the footprint of air showers induced by ultra-high energy cosmic rays. The reconstruction of event-by-event information sensitive to the cosmic-ray mass, is a challenging task and so far mainly based on fluorescence detector observations with their duty cycle of approx15\approx 15 \%approx15. Recently, great progress has been made in multiple fields of machine learning using deep neural networks and associated techniques. Applying these new techniques to air-shower physics opens up possibilities for improved reconstruction, including an estimation of the cosmic-ray composition. In this contribution, we show that deep convolutional neural networks can be used for air-shower reconstruction, using surface-detector data. The focus of the machine-learning algorithm is to reconstruct depths of shower maximum. In contrast to traditional reconstruction methods, the algorithm learns to extract the essential information from the signal and...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Arrival directions of the highest-energy cosmic rays detected with the Pierre Auger Observatory

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The AMIGA Muon Counters of the Pierre Auger Observatory: Performance and Studies of the Lateral Distribution Function

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), Aug 18, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Test results of a prototype device to calibrate the Large Size Telescope camera proposed for the Cherenkov Telescope Array

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Instrument Response Function Format for the Cherenkov Telescope Array

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Calibration of the Cherenkov Telescope Array

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Performance of the Cherenkov Telescope Array

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The flux of ultra-high energy cosmic rays after ten years of operation of the Pierre Auger Observatory

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of New limits on Quantum Gravity energy scale with PKS 2155-304 HESS data using a likelihood fit

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Ultra-high energy neutrinos searches with the Pierre Auger Observatory

SciPost Physics Proceedings, 2019

In the EeV range, neutrinos are expected to be produced by ultra-high energy cosmic rays interact... more In the EeV range, neutrinos are expected to be produced by ultra-high energy cosmic rays interactions with the Cosmic Microwave Background during propagation in the Universe. We report on the search for ultra-high energy neutrinos in data collected with the Surface Detector of the Pierre Auger Observatory. The searches are most efficient in the zenith angle range from 60 degrees to 95 degrees with tau neutrinos skimming in the Earth playing a dominant role. The present non-detection of UHE neutrinos in the Pierre Auger Observatory excludes the most optimistic scenarios of neutrino production in terms of UHE cosmic rays chemical composition and cosmological evolution of the acceleration sites. We also report on the searches for neutrinos in coincidence with the recent Gravitational Wave events detected by LIGO/Virgo.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Testing the agreement between the Xmax distributions measured by the Pierre Auger and Telescope Array Observatories

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Construction of a Schwarzschild-Couder telescope as a candidate for the Cherenkov Telescope Array: status of the optical system

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Measurement of the Cosmic Ray Flux near the Second Knee with the Pierre Auger Observatory

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Progress in Monte Carlo design and optimization of the Cherenkov Telescope Array

arXiv (Cornell University), Jul 10, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Anisotropies of the Highest Energy Cosmic-ray Events Recorded by the Pierre Auger Observatory in 15 years of Operation

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019), 2019

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Performance of Silicon Photomultipliers for the Dual-Mirror Medium-Sized Telescopes of the Cherenkov Telescope Array

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Performance of the SST-1M telescope of the Cherenkov Telescope Array observatory

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), Aug 18, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Performance of a small size telescope (SST-1M) camera for gamma-ray astronomy with the Cherenkov Telescope Array

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Auger average scaler rate variability in 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Hess J1731-347

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Air-Shower Reconstruction at the Pierre Auger Observatory based on Deep Learning

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019), 2019

The surface detector array of the Pierre Auger Observatory measures the footprint of air showers ... more The surface detector array of the Pierre Auger Observatory measures the footprint of air showers induced by ultra-high energy cosmic rays. The reconstruction of event-by-event information sensitive to the cosmic-ray mass, is a challenging task and so far mainly based on fluorescence detector observations with their duty cycle of approx15\approx 15 \%approx15. Recently, great progress has been made in multiple fields of machine learning using deep neural networks and associated techniques. Applying these new techniques to air-shower physics opens up possibilities for improved reconstruction, including an estimation of the cosmic-ray composition. In this contribution, we show that deep convolutional neural networks can be used for air-shower reconstruction, using surface-detector data. The focus of the machine-learning algorithm is to reconstruct depths of shower maximum. In contrast to traditional reconstruction methods, the algorithm learns to extract the essential information from the signal and...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Arrival directions of the highest-energy cosmic rays detected with the Pierre Auger Observatory

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The AMIGA Muon Counters of the Pierre Auger Observatory: Performance and Studies of the Lateral Distribution Function

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), Aug 18, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Test results of a prototype device to calibrate the Large Size Telescope camera proposed for the Cherenkov Telescope Array

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Instrument Response Function Format for the Cherenkov Telescope Array

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Calibration of the Cherenkov Telescope Array

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Performance of the Cherenkov Telescope Array

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The flux of ultra-high energy cosmic rays after ten years of operation of the Pierre Auger Observatory

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of New limits on Quantum Gravity energy scale with PKS 2155-304 HESS data using a likelihood fit

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Ultra-high energy neutrinos searches with the Pierre Auger Observatory

SciPost Physics Proceedings, 2019

In the EeV range, neutrinos are expected to be produced by ultra-high energy cosmic rays interact... more In the EeV range, neutrinos are expected to be produced by ultra-high energy cosmic rays interactions with the Cosmic Microwave Background during propagation in the Universe. We report on the search for ultra-high energy neutrinos in data collected with the Surface Detector of the Pierre Auger Observatory. The searches are most efficient in the zenith angle range from 60 degrees to 95 degrees with tau neutrinos skimming in the Earth playing a dominant role. The present non-detection of UHE neutrinos in the Pierre Auger Observatory excludes the most optimistic scenarios of neutrino production in terms of UHE cosmic rays chemical composition and cosmological evolution of the acceleration sites. We also report on the searches for neutrinos in coincidence with the recent Gravitational Wave events detected by LIGO/Virgo.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Testing the agreement between the Xmax distributions measured by the Pierre Auger and Telescope Array Observatories

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Construction of a Schwarzschild-Couder telescope as a candidate for the Cherenkov Telescope Array: status of the optical system

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Measurement of the Cosmic Ray Flux near the Second Knee with the Pierre Auger Observatory

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Progress in Monte Carlo design and optimization of the Cherenkov Telescope Array

arXiv (Cornell University), Jul 10, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Anisotropies of the Highest Energy Cosmic-ray Events Recorded by the Pierre Auger Observatory in 15 years of Operation

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019), 2019

Bookmarks Related papers MentionsView impact