Results 31 to 40 of about 2,259,814 (348)

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

Asymmetric Light Curves of Black Hole Binaries and the Doppler Beaming Effect [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
Black hole binary candidates are known to be composed of a black hole with 10Msolar and a K or M type companion. Because the companion is believed to fill the Roche lobe that is very aspherical, the light curves of black hole binaries are characterized ...
Hee-Won Lee   +2 more
doaj   +1 more source

The TESS light curve of AI Phoenicis [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2020
ABSTRACT Accurate masses and radii for normal stars derived from observations of detached eclipsing binary stars are of fundamental importance for testing stellar models and may be useful for calibrating free parameters in these model if the masses and radii are sufficiently precise and accurate.
Patrick Gaulme   +14 more
openaire   +5 more sources

Classical Machine Learning Techniques in the Search of Extrasolar Planets

open access: yesCLEI Electronic Journal, 2019
The field of astronomical data analysis has experienced an important paradigm shift in the recent years. The automation of certain analysis procedures is no longer a desirable feature for reducing the human effort, but a must have asset for coping with ...
Francisco Alejandro Mena   +2 more
doaj   +1 more source

A Photometric Study of Near-Contact Binary ZZ Aur [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
The BVR CCD full light curves of ZZ Aur were obtained as one of the near-contact binary observing programs at the Sobaek Mt. Observatory during Feb. 2000 - Feb. 2001. From the present observations, three primary and seven secondary times of minimum light
Kyu-Dong Oh   +3 more
doaj   +1 more source

Swift/BAT and RXTE Observations of the Peculiar X-ray Binary 4U 2206+54 - Disappearance of the 9.6 Day Modulation [PDF]

open access: yes, 2006
Observations of the high-mass X-ray binary 4U 2206+54 with the Swift Burst Alert Telescope (BAT) do not show modulation at the previously reported period of 9.6 days found from observations made with the Rossi X-ray Timing Explorer (RXTE) All-Sky Monitor
Corbet, R. H. D.   +2 more
core   +4 more sources

Terrestrial Exoplanet Light Curves [PDF]

open access: yesProceedings of the International Astronomical Union, 2005
The phase or orbital light curves of extrasolar terrestrial planets in reflected or emitted light will contain information about their atmospheres and surfaces complementary to data obtained by other techniques such as spectrosopy. We show calculated light curves at optical and thermal infrared wavelengths for a variety of Earth-like and Earth-unlike ...
Nicholas Moskovitz   +2 more
openaire   +3 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

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

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

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