Results 81 to 90 of about 386 (160)

Search for Dark Matter Axions with CAST-CAPP. [PDF]

open access: yesNat Commun, 2022
Adair CM   +63 more
europepmc   +1 more source

CTAO LST–1 observations of magnetar SGR 1935+2154: Deep limits on sub-second bursts and persistent tera-electronvolt emission

open access: yesAstronomy & Astrophysics
Context. The Galactic magnetar SGR 1935+2154 has exhibited prolific high-energy (HE) bursting activity in recent years. Aims. Investigating its potential tera-electronvolt counterpart could provide insights into the underlying mechanisms of magnetar ...
Abe K.   +335 more
doaj   +1 more source

Very-high-energy gamma-ray intranight variability from BL Lacertae during the extreme flaring state of 2022

open access: yesAstronomy & Astrophysics
Context. BL Lacertae (BL Lac), the archetypal blazar of its subclass and one of the most studied blazars of recent decades, has undergone a series of major multi-wavelength outbursts since 2020, resulting in its highest recorded γ-ray flare to date ...
Abe K.   +298 more
doaj   +1 more source

Time-dependent Modeling of the Subhour Spectral Evolution during the 2013 Outburst of Mrk 421

open access: yesThe Astrophysical Journal
In 2013 April, the TeV blazar Markarian 421 underwent one of its most powerful emission outbursts recorded to date. An extensive multi-instrument campaign featuring MAGIC, VERITAS, and NuSTAR provided comprehensive very high-energy (VHE; E  > 100 GeV ...
K. Abe   +194 more
doaj   +1 more source

Croatian Legal Framework for Port Security: Case Study of the Port of Rijeka

open access: yes, 2021
Various aspects of the security of maritime ships and ports open to international traffic in the Republic of Croatia are regulated by the Ships and Port Security Act (SPSA). The SPSA prescribes a number of obligations that the port authority or the concessionaire must fulfil in order to ensure the application and enforcement of security measures ...
openaire   +1 more source

Extreme Blazars Observed with MAGIC: Second Catalog Release

open access: yesThe Astrophysical Journal
Extremely high-peaked BL Lac objects—also named extreme blazars —are among the most energetic and persistent extragalactic accelerators in the Universe, defined by a synchrotron emission peaking above 10 ^17 Hz in X-rays.
K. Abe   +356 more
doaj   +1 more source

GRB 221009A: Observations with LST-1 of CTAO and Implications for Structured Jets in Long Gamma-Ray Bursts

open access: yesThe Astrophysical Journal Letters
GRB 221009A is the brightest gamma-ray burst (GRB) observed to date. Extensive observations of its afterglow emission across the electromagnetic spectrum were performed, providing the first strong evidence of a jet with a nontrivial angular structure in ...
K. Abe   +331 more
doaj   +1 more source

Influence of ISO 27001:2005 on the port of Rijeka security

open access: yesPomorstvo : scientific journal of maritime research, 2008
The purpose of this paper is to explain clearly the role of the information system security management within the entire Port of Rijeka security process. The complexity of the Port of Rijeka system, in which the Port of Rijeka Authority contemplates the development strategy of the Rijeka traffic route and the services provided by the Port within the ...
Hlača, Bojan   +2 more
openaire   +2 more sources

Prompt Searches for Very-high-energy γ-Ray Counterparts to IceCube Astrophysical Neutrino Alerts

open access: yesThe Astrophysical Journal
The search for sources of high-energy astrophysical neutrinos can be significantly advanced through a multimessenger approach, which seeks to detect the γ -rays that accompany neutrinos as they are produced at their sources.
J. Abhir   +839 more
doaj   +1 more source

Decreasing Pasteurization Treatment Efficiency against Amoeba-Grown Legionella pneumophila-Recognized Public Health Risk Factor. [PDF]

open access: yesInt J Environ Res Public Health, 2022
Knežević M   +10 more
europepmc   +1 more source

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