Are disk in dwarf novae during their superoutbursts really eccentric?
J. Smak
TL;DR
This paper critically reexamines claims of disk eccentricity in dwarf novae during superoutbursts, arguing that previous evidence was flawed due to errors and incorrect assumptions, especially regarding hot spot eclipse interpretations.
Contribution
The study challenges prior evidence for disk eccentricity in dwarf novae, clarifying that earlier conclusions were based on invalid assumptions and errors.
Findings
Previous evidence for disk eccentricity is flawed.
Hot spot eclipse data do not reliably indicate disk eccentricity.
Claims of eccentric disks during superoutbursts are unsupported by corrected analysis.
Abstract
The evidence presented earlier by several authors for the substantial disk eccentricity in dwarf novae during their superoutbursts is shown to result either from errors or from arbitrary, incorrect assumptions. In particular, the evidence resulting from hot spot eclipses was based on the assumption that the spot distances are identical with disk radii which is not always correct.
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Taxonomy
TopicsAstrophysical Phenomena and Observations · Pulsars and Gravitational Waves Research · Astronomical Observations and Instrumentation