Results 21 to 30 of about 337,219 (230)

Multicolor photometry of the GRB970508 optical remnant [PDF]

open access: yesFourth Huntsville gamma-ray burst symposium, 1998
We report results of follow-up multicolor photometry of the optical variable source that is a probable remnant of the gamma-ray burst GRB970508 discovered by the BeppoSAX satellite (IAUC 6649). Observations were carried out in Johnson-Kron-Cousins $ BVR_cI_c system with the 1-m and 6-m telescopes of SAO RAS.
Sokolov, V. V.   +6 more
openaire   +2 more sources

Optical photometry and polarimetry and infrared photometry of 3C 345 in outburst

open access: yesThe Astrophysical Journal, 1993
We present V-band CCD photometry, UBVRI photopolarimetry, and near simultaneous JHK photometry of 3C 345 during a renewed outburst in spring of 1992, which reached maximum at the end of April. The observations also show a large and variable polarization.
Mark R. Kidger   +4 more
openaire   +1 more source

Spectroscopy and multiband photometry of the afterglow of intermediate duration γ-ray burst GRB 040924 and its host galaxy [PDF]

open access: yes, 2008
Aims. We present optical photometry and spectroscopy of the afterglow and host galaxy of gamma-ray burst GRB040924. This GRB had a rather short duration of T90 ∼ 2.4 s, and a well sampled optical afterglow light curve.
Kidger, M.   +117 more
core   +3 more sources

The results of experimental studies of the passage of light energy under the skin of animals along individual hairs

open access: yesMachinery & Energetics, 2022
This paper presents new scientific results of experimental studies that refute the generally accepted fact that the coat solely protects animals from the effects of solar energy.
L. Сhervinsky   +3 more
doaj   +1 more source

Photometry and Spectroscopy of the GRB 970508 Optical Counterpart

open access: yesScience, 1998
An optical transient within the error box of the gamma ray burst GRB 970508 was imaged 4 hours after the event. It displayed a strong ultraviolet excess, and reached maximum brightness 2 days later. The optical spectra did not show any emission lines, and no variations on time scales of minutes were observed for 1 hour during the decline phase ...
A J, Castro-Tirado   +26 more
openaire   +3 more sources

Optical Properties of Light-Scattering Standards for CCD Photometry

open access: yesSensors, 2023
This paper analyzes the light-scattering standards currently used for calibration (verification) and systematic research in photo and spectrophotometry tools. The application specificities in studying the diffuse reflected and transmitted light during biomedical CCD photometry are considered.
Denys Bondariev   +4 more
openaire   +4 more sources

LBT Italia: Current Achievements and Future Directions

open access: yesInstruments
The Large Binocular Telescope (LBT) is a world-leading astronomical observatory, where the Italian partnership has played an important role in increasing the telescope’s productivity, both through an optimized observing strategy and through peer-reviewed
Silvia Tosi   +5 more
doaj   +1 more source

Rationale for the Choice of the Ellipsoidal Reflector Parameters for Biomedical Photometers

open access: yesПриборы и методы измерений, 2021
Biomedical photometersʼ information-measuring systems with ellipsoidal reflectors have acceptable results in determining of biological tissues optical properties in the visible and near-infrared spectral range. These photometers make it possible to study
N. V. Bezuglaya   +5 more
doaj   +1 more source

Acknowledgment to Reviewers of Optics in 2020

open access: yes, 2021
Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Optics maintains its standards for the high quality of its published papers [...
Optics Editorial Office Office
core   +1 more source

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