Results 51 to 60 of about 7,751,768 (367)

The Optical Variability of Supermassive Black Hole Binary Candidate PG 1302–102: Periodicity and Perturbation in the Light Curve [PDF]

open access: yesAstrophysical Journal, 2018
The photometric light curve of PG 1302–102 shows periodic variability, which makes this object one of the most plausible supermassive black hole binary candidates. Interestingly, the most recent study of its updated optical light curve reports a decrease
A. Kovačević   +3 more
semanticscholar   +1 more source

An Algorithmic Approach for Detecting Bolides with the Geostationary Lightning Mapper

open access: yesSensors, 2019
The Geostationary Lightning Mapper (GLM) instrument onboard the GOES 16 and 17 satellites can be used to detect bolides in the atmosphere. This capacity is unique because GLM provides semi-global, continuous coverage and releases its measurements ...
Clemens M. Rumpf   +4 more
doaj   +1 more source

Determining the Rotation Periods of an Inactive LEO Satellite and the First Korean Space Debris on GEO, KOREASAT 1 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2016
Inactive space objects are usually rotating and tumbling as a result of internal or external forces. KOREASAT 1 has been inactive since 2005, and its drift trajectory has been monitored with the optical wide-field patrol network (OWL-Net).
Jin Choi   +15 more
doaj   +1 more source

VBBinaryLensing: a public package for microlensing light-curve computation [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
The computation of microlensing light curves represents a bottleneck for the modeling of planetary events, making broad searches in the vast parameter space of microlensing extremely time-consuming.
V. Bozza   +5 more
semanticscholar   +1 more source

The bright optical/NIR afterglow of the faint GRB 080710 - Evidence for a jet viewed off axis [PDF]

open access: yes, 2009
We investigate the optical/near-infrared light curve of the afterglow of GRB 080710 in the context of rising afterglows. Optical and near-infrared photometry was performed using the seven channel imager GROND and the Tautenburg Schmidt telescope.
Afonso, P.   +16 more
core   +3 more sources

Recombination Effects on Supernova Light Curves [PDF]

open access: yesThe Astrophysical Journal, 2019
Abstract The light curves of Type II supernovae (SNe II) are believed to be highly affected by recombination of hydrogen that takes place in their envelopes. In this work, we analytically investigate the transition from a fully ionized envelope to a partially recombined one and its effects on the SN light curve.
Tomer Goldfriend   +4 more
openaire   +6 more sources

Kepler Light Curve Modeling of KIC 9788457

open access: yesJournal of Advanced Research in Natural and Applied Sciences, 2023
Eclipsing binary systems are significant objects for astrophysical studies since they offer more accurate fundamental stellar parameters (mass, radius).
Fahri Aliçavuş
doaj   +1 more source

The complex light curve of the afterglow of GRB071010A [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2008
11 pages, 3 figures, MNRAS, in ...
Ryan J. Foley   +60 more
openaire   +7 more sources

The interactive responses of fertigation levels under buried straw layer on growth, physiological traits and fruit yield in tomato plant

open access: yesJournal of Plant Interactions, 2019
The experiments were conducted on tomato plants to study the interactive responses of water levels (W70%: 70% of water consumption and W90%: 90% water consumption) and nitrogen rates (N100%: 100% of recommended and N80%:80% of N1.0) under two straw ...
Ghulam Rasool   +4 more
doaj   +1 more source

Light Curves of Supernovae [PDF]

open access: yesInternational Astronomical Union Colloquium, 1996
Although emerging from a range of progenitor stars and the product of different explosion mechanisms the light curves of the various supernova types are shaped mainly by radioactive power. Core-collapse supernovae have in addition early peaks from shock breakout with a subsequent cooling phase and massive extended stars a recombination (plateau) phase.
openaire   +2 more sources

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