Results 1 to 10 of about 2,321,585 (305)

Multiwavelength light curve parameters of Cepheid variables [PDF]

open access: yesEPJ Web of Conferences, 2017
We present a comparative analysis of theoretical and observed light curves of Cepheid variables using Fourier decomposition. The theoretical light curves at multiple wavelengths are generated using stellar pulsation models for chemical compositions ...
Bhardwaj Anupam   +5 more
doaj   +2 more sources

Analysis and characterization of X-ray flare of Mkn 421 using XMM-Newton observation 0658801301

open access: yesBibechana, 2023
This research work was carried out to analyze the X-ray flares in Blazar Mkn 421 using data from XMM-Newton observation (Observation ID: 0658801301) that lasted for 8 hours.
Rajendra Neupane, Niraj Dhital
doaj   +3 more sources

Classification of Low Earth Orbit (LEO) Resident Space Objects’ (RSO) Light Curves Using a Support Vector Machine (SVM) and Long Short-Term Memory (LSTM)

open access: yesSensors, 2023
Light curves are plots of brightness measured over time. In the field of Space Situational Awareness (SSA), light curves of Resident Space Objects (RSOs) can be utilized to infer information about an RSO such as the type of object, its attitude, and its ...
Randa Qashoa, Regina Lee
doaj   +1 more source

CCD Photometry of Contact Binary WZ Cephei [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2008
We present the full BVR light curves and five times of minima of WZ Cep to provides a complete photometric solution and to confirm the long term variation of the light curves.
Woo-Baik Lee   +2 more
doaj   +1 more source

Spectroscopic Study Of Light Curve And Physical Properties For SN2010jl [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2013
:In this work, The physical properties were studies for ( supernova 2010jl) - which discovered on 2010 Nov. 3 - depending on (Oort Model ), optical spectrum curve and by applying special mathematical equations.
Adil N. Ayyash, Zeyad A. Saleh
doaj   +1 more source

Photometric Analysis of CN Andromeda Short Period Binary Star

open access: yesZanco Journal of Pure and Applied Sciences, 2023
In this work, the short period binary system named (CN Andromeda) have been chosen to be analyze with B,V light curves using the PyWD2015-Qt5 program .The physical and geometrical parameters have been gained and contrasted with previous results of ...
Helen Zrar Hamad Ameen ,Ismail Musa Murad
doaj   +1 more source

Light curve analysis of main belt asteroids 4747, 5255, 11411, 15433, 17866

open access: yesOpen Astronomy, 2023
The main belt asteroids 4747, 5255, 11411, 15433, and 17866 were studied at the Baldone Astrophysical Observatory in the time span range 2018–2022. The obtained light curve data together with published Minor Planet Center data are analyzed with Fourier ...
Eglitis Ilgmars, Kristers Nagainis
doaj   +1 more source

TESS–Gaia Light Curve: A PSF-based TESS FFI Light-curve Product

open access: yesThe Astronomical Journal, 2023
The Transiting Exoplanet Survey Satellite (TESS) is continuing its second extended mission after 55 sectors of observations. TESS publishes full-frame images (FFIs) at a cadence of 1800, 600, or 200 s, allowing light curves to be extracted for stars ...
Te Han, Timothy D. Brandt
doaj   +1 more source

On the Quality of Deep Representations for Kepler Light Curves Using Variational Auto-Encoders

open access: yesSignals, 2021
Light curve analysis usually involves extracting manually designed features associated with physical parameters and visual inspection. The large amount of data collected nowadays in astronomy by different surveys represents a major challenge of ...
Francisco Mena   +4 more
doaj   +1 more source

A Meteor Detection Algorithm for GWAC System

open access: yesUniverse, 2023
Compared with the international meteor surveillance systems, the ground wide angle camera (GWAC) system exhibits characteristics such as images with the resolution of 4K × 4K and single-site observation.
Yicong Chen   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy