Results 21 to 30 of about 110,738 (286)

Observation of the Crab Nebula with the HAWC Gamma-Ray Observatory [PDF]

open access: yes, 2017
The Crab Nebula is the brightest TeV gamma-ray source in the sky and has been used for the past 25 years as a reference source in TeV astronomy, for calibration and verification of new TeV instruments. The High Altitude Water Cherenkov Observatory (HAWC),
A. Abeysekara   +106 more
semanticscholar   +1 more source

Resolving the Crab pulsar wind nebula at teraelectronvolt energies [PDF]

open access: yesNature Astronomy, 2019
The Crab nebula is one of the most-studied cosmic particle accelerators, shining brightly across the entire electromagnetic spectrum up to very-high-energy gamma rays1,2.
H. Collaboration
semanticscholar   +1 more source

The NEBULA RPC-Optimized Architecture

open access: yesInternational Symposium on Computer Architecture, 2020
Large-scale online services are commonly structured as a network of software tiers, which communicate over the datacenter network using RPCs. Ongoing trends towards software decomposition have led to the prevalence of tiers receiving and generating RPCs ...
Mark Sutherland   +5 more
semanticscholar   +1 more source

GeV–TeV Cosmic-Ray Leptons in the Solar System from the Bow Shock Wind Nebula of the Nearest Millisecond Pulsar J0437–4715 [PDF]

open access: yesAstrophysical Journal, 2019
We consider the acceleration of leptons up to GeV–TeV energies in the bow shock wind nebula of PSR J0437–4715 and their subsequent diffusion through the interstellar magnetic fields.
A. Bykov   +5 more
semanticscholar   +1 more source

Particle transport within the pulsar wind nebula HESS J1825–137 [PDF]

open access: yesAstronomy & Astrophysics, 2018
Context. We present a detailed view of the pulsar wind nebula (PWN) HESS J1825–137. We aim to constrain the mechanisms dominating the particle transport within the nebula, accounting for its anomalously large size and spectral characteristics. Aims.
H. Abdalla   +228 more
semanticscholar   +1 more source

VVV-WIT-12 and Its Fashionable Nebula: A 4 yr Long-period Young Stellar Object with a Light Echo?

open access: yesThe Astrophysical Journal Letters, 2023
We report the serendipitous discovery of VVV-WIT-12, an unusual variable source that seems to induce variability in its surrounding nebula. The source belongs to the rare objects that we call WITs (short for What Is This?) discovered within the VISTA ...
Roberto K. Saito   +9 more
doaj   +1 more source

EVOLUTION OF THE CRAB NEBULA RADIO EMISSION

open access: yesOdessa Astronomical Publications, 2017
In 1977-1992 the flux density of the Crab Nebula in respect to Orion Nebula was measured at the frequency of 927 MHz with the same 10-m radio telescope.
E. N. Vinyajkin
doaj   +1 more source

History of the solar nebula from meteorite paleomagnetism [PDF]

open access: yesScience Advances, 2017
Meteorite measurements suggest that magnetism played a central role in mass transport in the early solar system. We review recent advances in our understanding of magnetism in the solar nebula and protoplanetary disks (PPDs).
B. Weiss, X. Bai, R. Fu
semanticscholar   +1 more source

New insights into the outflows from R Aquarii [PDF]

open access: yes, 2018
R Aquarii is a symbiotic binary surrounded by a large and complex nebula with a prominent curved jet. It is one of the closest known symbiotic systems, and therefore offers a unique opportunity to study the central regions of these systems and the ...
Corradi, R. L. M.   +10 more
core   +10 more sources

A Spatially Resolved X-Ray Polarization Map of the Vela Pulsar Wind Nebula

open access: yesThe Astrophysical Journal Letters, 2023
In this paper, we present a full spatially resolved polarization map for the Vela pulsar wind nebula (PWN) observed by IXPE. By employing effective background discrimination techniques, our results show a remarkably high degree of local polarization in ...
Kuan Liu   +14 more
doaj   +1 more source

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