Results 51 to 60 of about 838,240 (250)

UNMASKING THE SUPERNOVA IMPOSTORS [PDF]

, 2012
The canonical picture of a supernova impostor is a short (∼months) −11 ≲ MV ≲ −14 optical transient from a massive (M* ≳ 40 M☉) star during which the star ejects a dense shell of material. Dust formed in the ejecta then obscures the star. In this picture,
C. Kochanek, D. Szczygieł, K. B. D. O. Astronomy, the Center for Cosmology, A. Physics, T. O. S. University   +5 more
semanticscholar   +1 more source

Atmospheric Monitoring for Astroparticle Physics Observatories

International Conference on Rebooting Computing, 2023
For many observatories recording high-energy cosmic rays, gamma rays, or neutrinos, the Earth’s atmosphere is either an integral part or at least a considerable aspect of the detector setup. After giving an overview of the influence of the atmosphere and
B. Keilhauer
semanticscholar   +1 more source

Timing Calibration and Windowing Technique Comparison for Lightning Mapping Arrays

Earth and Space Science, Volume 8, Issue 7, July 2021., 2021
Abstract Since their introduction 22 years ago, lightning mapping arrays (LMA) have played a central role in the investigation of lightning physics. Even in recent years with the proliferation of digital interferometers and the introduction of the LOw Frequency ARray (LOFAR) radio telescope, LMAs still play an important role in lightning science.
Brian M. Hare, Harald Edens, Paul Krehbiel, William Rison, O. Scholten, S. Buitink, A. Corstanje, H. Falcke, J. R. Hörandel, Tim Huege, G. K. Krampah, P. Mitra, K. Mulrey, Anna Nelles, Hershal Pandya, J. P. Rachen, S. Thoudam, T. N. Trinh, S. ter Veen, Tobias Winchen   +19 more
wiley   +1 more source

Astroparticle Physics with H.E.S.S.: recents results and nearfuture prospects [PDF]

EPJ Web of Conferences, 2019
H.E.S.S. is an array of five Imaging Atmospheric Cherenkov Telescopes located in Namibia. It is designed for observations of astrophysical sources emitting very-high-energy (VHE) gamma rays in the energy range from a few ten GeVs to several ten TeVs. The
Moulin Emmanuel
doaj   +1 more source

TAIGA - An advanced hybrid detector complex for astroparticle physics and high energy gamma-ray astronomy

SciPost Physics Proceedings, 2023
The physical motivations, present status, main results in study of cosmic rays and in the field of gamma-ray astronomy as well future plans of the TAIGA-1 (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) project are presented.
N. M. Budnev, I. Astapov, P. Bezyazeekov, E. Bonvech, A. Borodin, A. Bulan, D. Chernov, A. Chiavassa, A. Dyachok, A. Gafarov, A. Garmash, V. Grebenyuk, E. Gress, O. Gress, T. Gress, A. Grinyuk, O. Grishin, A. D. Ivanova, A. L. Ivanova, N. Kalmykov, V. Kindin, S. Kiryuhin, R. Kokoulin, K. Kompaniets, E. Korosteleva, V. Kozhin, E. Kravchenko, A. Kryukov, L. Kuzmichev, A. Lagutin, M. Lavrova, Y. Lemeshev, B. Lubsandorzhiev, N. Lubsandorzhiev, A. Lukanov, D. Lukyantsev, S. Malakhov, R. Mirgazov, R. Monkhoev, E. Osipova, A. Pakhorukov, L. Pankov, A. Pan, A. Panov, A. Petrukhin, I. Poddubnyi, D. Podgrudkov, V. Ponomareva, E. Popova, E. Postnikov, V. Prosin, V. Ptuskin, A. Pushnin, R. Raikin, A. Razumov, G. Rubtsov, E. Ryabov, V. Samoliga, A. Satyshev, A. Silaev, A. Silaev, A. Sidorenkov, A. Skurikhin, A. Sokolov, L. Sveshnikova, V. Tabolenko, L. Tkachev, A. Tanaev, M. Ternovoy, R. Togoo, N. Ushakov, A. Vaidyanathan, P. Volchugov, N. Volkov, D. Voronin, A. Zagorodnikov, D. Zhurov, I. Yashin
doaj   +1 more source

Needle Propagation and Twinkling Characteristics

Journal of Geophysical Research: Atmospheres, Volume 126, Issue 6, 27 March 2021., 2021
Abstract Recently, a new lightning phenomena, termed needles, has been observed in both VHF and in optical along positive lightning leaders. They appear as small (<100 m) leader branches that undergo dielectric breakdown at regular intervals (called twinkles).
B. M. Hare, O. Scholten, J. Dwyer, C. Strepka, S. Buitink, A. Corstanje, H. Falcke, J. R. Hörandel, T. Huege, G. K. Krampah, P. Mitra, K. Mulrey, A. Nelles, H. Pandya, J. P. Rachen, S. Thoudam, T. N. G. Trinh, S. ter Veen, T. Winchen   +18 more
wiley   +1 more source

Multimessenger Astronomy with Neutrinos

Universe, 2021
Multimessenger astronomy is arguably the branch of the astroparticle physics field that has seen the most significant developments in recent years. In this manuscript, we will review the state-of-the-art, the recent observations, and the prospects and ...
Francisco Salesa Greus, Agustín Sánchez Losa   +1 more
doaj   +1 more source

PROBING THE DARK MATTER RADIAL PROFILE IN LENS GALAXIES AND THE SIZE OF X-RAY EMITTING REGION IN QUASARS WITH MICROLENSING [PDF]

, 2015
We use X-ray and optical microlensing measurements to study the shape of the dark matter density profile in the lens galaxies and the size of the (soft) X-ray emission region.
J. Jim'enez-Vicente, E. Mediavilla, C. Kochanek, I. J.A.MunozDepartamentodeF'isicaTe'oricaydelCosmoseI, U. Granada, Spain, Instituto de Astrof'isica de Canarias y Departamento de Astr Laguna, Tenerife, D. Astronomy, the Center for Cosmology, A. Physics, The Ohio State University, Departamento de Astronom'ia y Astrof'isica y Observatorio Astron'omico, U. Valencia, Valencia   +14 more
semanticscholar   +1 more source

The Astroparticle Detectors Array - An Educational Project in Cosmic Ray Physics

Symmetry, 2023
ADA, short for Astroparticle Detectors Array, is an educational project aiming to detect cosmic radiation and possibly high-energy particles known as ultra-high-energy cosmic rays (UHECRs) or even to spot a supernova event.
Marco Arcani, E. Conte, Omar Del Monte, A. Frassati, Andrea Grana, C. Guaita, D. Liguori, Altea Renata Maria Nemolato, D. Pigato, Elia Rubino   +9 more
semanticscholar   +1 more source

The Initial Stage of Cloud Lightning Imaged in High‐Resolution

Journal of Geophysical Research: Atmospheres, Volume 126, Issue 4, 27 February 2021., 2021
Abstract With LOFAR we have been able to image the development of lightning flashes with meter‐scale accuracy and unprecedented detail. We discuss the primary steps behind our most recent lightning imaging method. To demonstrate the capabilities of our technique we show and interpret images of the first few milliseconds of two intracloud flashes.
O. Scholten, B. M. Hare, J. Dwyer, C. Sterpka, I. Kolmašová, O. Santolík, R. Lán, L. Uhlíř, S. Buitink, A. Corstanje, H. Falcke, T. Huege, J. R. Hörandel, G. K. Krampah, P. Mitra, K. Mulrey, A. Nelles, H. Pandya, A. Pel, J. P. Rachen, T. N. G. Trinh, S. ter Veen, S. Thoudam, T. Winchen   +23 more
wiley   +1 more source