36 citations · 54 across the 7 of their papers we have counts for
7 papers
New expansion rate measurements of the Crab Nebula in radio and optical
Michael F. Bietenholz, Richard L. Nugent
We present new radio measurements of the expansion rate of the Crab nebula's synchrotron nebula over a ~30-yr period. We find a convergence date for the radio synchrotron nebula of…
The Measurement of Solar Diameter and Limb Darkening Function with the Eclipse Observations. Thesis work
Andrea Raponi
A discussion of the solar diameter and its variations must be linked to the limb darkening function (LDF). We introduce a new method to perform high resolution astrometry of the so…
Eclipse, solar limb darkening function and diameter measurements: toward a unified approach
Andrea Raponi, Costantino Sigismondi, Konrad Guhl +2
In order to perform high resolution astrometry of the solar diameter from the ground, through the observations of eclipses, the study of the limb darkening profile is described. Kn…
Solar limb darkening function and solar diameter with eclipses observations
Andrea Raponi, Costantino Sigismondi, Konrad Guhl +2
We introduce a new method to perform high resolution astrometry of the solar diameter from the ground, through the observations of eclipses. A discussion of the solar diameter and…
The Measurement of Solar Diameter and Limb Darkening Function with the Eclipse Observations
Andrea Raponi, Costantino Sigismondi, Konrad Guhl +2
The Total Solar Irradiance varies over a solar cycle of 11 years and maybe over cycles with longer period. Is the solar diameter variable over time too? We introduce a new method t…
Measuring solar disk shape up to relativistic accuracy: the role of scintillation in ancient naked eye data
Costantino Sigismondi, Richard Nugent, Gerhard Dangl
The orbital displacement of the Moon is known to a precision on the order of centimeters from the lunar laser ranging data, while the lunar profile's confidence level is still only…
Towards a unified definition of solar limb during central eclipses and daily transits
Costantino Sigismondi, Andrea Raponi, Cyril Bazin +1
The diameter of the Sun has been measured using Baily's beads during central eclipses, observed with portable telescopes. A blend of tiny emission lines produced in the first sever…