0000000000567915

AUTHOR

Koji Mukai

showing 3 related works from this author

A 60-night campaign on dwarf novae. - I. Photometric variability of SU UMa and YZ Cnc

1994

A 60-night campaign on SU UMa, YZ Cnc and some secondary targets was carried out during 1988 December and 1989 January at the Observatorio del Roque de Los Muchachos (the 1988 International Time Project). The aim was to study the behaviour of these dwarf novae through their outburst cycle. Here we present the overall light curves of the main targets, SU UMa and YZ Cnc, which show that the optical fluxes continue to decrease after the end of the outburst. For YZ Cnc we find that, during quiescence, orbital variability is present, which may be interpreted as modulation caused by the bright-spot region. Near the end of an outburst, a weak, sinusoidal variation is observed; we discuss the possi…

PhysicsAccretion discSpace and Planetary ScienceBinary starAstronomyCataclysmic variable starAstronomy and AstrophysicsAstrophysicsVariation (astronomy)Light curveMonthly Notices of the Royal Astronomical Society
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Time domain astronomy with the THESEUS satellite

2021

THESEUS is a medium size space mission of the European Space Agency, currently under evaluation for a possible launch in 2032. Its main objectives are to investigate the early Universe through the observation of gamma-ray bursts and to study the gravitational waves electromagnetic counterparts and neutrino events. On the other hand, its instruments, which include a wide field of view X-ray (0.3-5 keV) telescope based on lobster-eye focussing optics and a gamma-ray spectrometer with imaging capabilities in the 2-150 keV range, are also ideal for carrying out unprecedented studies in time domain astrophysics. In addition, the presence onboard of a 70 cm near infrared telescope will allow simu…

010504 meteorology & atmospheric sciencesmedia_common.quotation_subjectAstronomyAstrophysics::High Energy Astrophysical PhenomenaSocio-culturaleFOS: Physical sciencesX-ray sources01 natural scienceslaw.inventionTelescopeX-ray sourceSettore FIS/05 - Astronomia E Astrofisicalaw0103 physical sciencesTime domain[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]Variability010303 astronomy & astrophysicsInstrumentation and Methods for Astrophysics (astro-ph.IM)0105 earth and related environmental sciencesmedia_commonTime domain astronomyPhysicsSpectrometerGravitational waveX-rays surveysAstronomyAstronomy and AstrophysicsUniverseSpace and Planetary ScienceSatelliteNeutrinoAstrophysics - Instrumentation and Methods for AstrophysicsExperimental Astronomy
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Accretion disc evolution in cataclysmic variables (the 1988 international time project in La Palma

1990

A summary of data collected during a sixty night international campaign devoted to cataclysmic variables is presented.

PhysicsAccretion discSpace and Planetary ScienceAstronomyAstronomy and AstrophysicsAstrophysicsCosmologyAstrophysics and Space Science
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