Results 81 to 90 of about 652 (185)

TESS Light Curves of Cataclysmic Variables. VI. Intermediate Polars

open access: yesThe Astrophysical Journal Supplement Series
The long and (almost) continuous high-cadence light curves provided by the TESS space mission are ideally suited to study in detail brightness variations in stellar sources on the broad range of timescales between minutes and months.
Albert Bruch
doaj   +1 more source

Telescope and Researcher Potential of Turkey for Collaboration in CV Studies

open access: yesOpen Astronomy, 2012
Turkish astronomical community has witnessed the construction of several telescopes in the last 10 years. These telescopes and the potential of young researchers in the country motivated this poster presentation which aims to receive attention for ...
Saygac A. Talat, Alis Sinan
doaj   +1 more source

A TECHNIQUE FOR SIMULTANEOUS MEASUREMENT OF CIRCULAR AND LINEAR POLARIZATION WITH A SINGLE-CHANNEL POLARIMETER

open access: yesOdessa Astronomical Publications, 2016
We present a technique for simultaneous measurement of circular and linear polarization with the single-channel polarimeter, that is used in Crimean astrophysical observatory for many years. Methods and a computer program for data reduction is described.
S. V. Kolesnikov   +3 more
doaj   +1 more source

DETERMINATION OF THE ORIENTATION OF THE ACCRETION COLUMNS IN MAGNETIC CATACLYSMIC VARIABLES

open access: yesOdessa Astronomical Publications, 2017
Methods for the determination of the orientation of accretion columns in magnetic cataclysmic variables based on the observations of the circular and linear polarization, X-Ray flux and profiles of emission lines are discussed.
I. L Andronov
doaj   +1 more source

A Broadband Search for Coherent Radio Emission in Cataclysmic Variables

open access: yesThe Astrophysical Journal
Radio observations of cataclysmic variables have revealed a variety of behaviors. From some systems, we see bright unpolarized radio flares occurring during dwarf nova outbursts, consistent with synchrotron emission from jets.
Margaret E. Ridder   +3 more
doaj   +1 more source

The Evolution of Cataclysmic Variables under Various Magnetic Braking Prescriptions

open access: yesThe Astrophysical Journal
Recent studies have revealed discrepancies between observations and the predictions of the standard magnetic braking (MB). Although alternative models have been broadly discussed in neutron star binaries, they have not been systematically tested in ...
Wen-Shi Tang   +4 more
doaj   +1 more source

Kilonova and progenitor properties of merger-driven gamma-ray bursts

open access: yesAstronomy & Astrophysics
Context. Gamma-ray burst (GRB) prompt and afterglow emission, as well as kilonova (KN) emission, are the expected electromagnetic (EM) counterparts of binary neutron star (BNS) and neutron star-black hole (NSBH) mergers.
Singh P.   +8 more
doaj   +1 more source

The duplication of genomes and genetic networks and its potential for evolutionary adaptation and survival during environmental turmoil. [PDF]

open access: yesProc Natl Acad Sci U S A, 2023
Ebadi M   +7 more
europepmc   +1 more source

Spectroscopic Identification and Population Properties of Cataclysmic Variables from DESI DR1

open access: yesThe Astrophysical Journal Supplement Series
We present a systematic search for cataclysmic variables (CVs) using spectroscopic data from Data Release 1 of the Dark Energy Spectroscopic Instrument. Applying the Bagging-TopPush algorithm, we identified 433 CV candidates and related objects, of which
Wen Hou   +5 more
doaj   +1 more source

Negative Superhumps in Cataclysmic Variables Driven by Retrograde Apsidal Disk Precession

open access: yesThe Astrophysical Journal Letters
Negative superhumps (NSHs) are photometric modulations in cataclysmic variables with periods slightly shorter than the orbital period. They are usually attributed to retrograde nodal precession of a tilted accretion disk, although the origin and ...
David Vallet   +3 more
doaj   +1 more source

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