Search results

[[File:Positional astronomy.svg|thumb|400px|Diagram of [[positional astronomy]]]] In [[positional astronomy]], two [[astronomical object]]s are said to be in '''opposition''' when they are on [[antipodal point|opposite sides]] of the ...

{{Short description|Relationship in astrophysics}} {{For|the Phillips relationship in labour-market economics|Phillips curve}} ...

...will break up into a number of speckles. Each speckle will move around in time to integrate over a long exposure to a diameter approximately D/r0. The siz ...ive_optics_for_astronomical_telescopes| page=92|isbn=0-19-509019-5}}</ref> in terms of the so-called [[Astronomical seeing#The profile|atmospheric turbu ...

...uired between sample points for the values to be effectively uncorrelated. In addition, they can form the basis of rules for interpolating values at poin ...] differ only in the particular stochastic processes they are applied to. In [[quantum field theory]] there are [[Correlation function (quantum field th ...

{{Short description|Radio-astronomy observatory in Western Australia}} ...ies in a designated [[radio quiet zone]] located near [[Boolardy Station]] in the [[Murchison Shire]] of [[Western Australia]], about {{convert|800|km}} ...

...search on the structure of galaxies and active galactic nuclei, especially in the early universe ...clei]], especially in the early universe. She is an associate professor of astronomy and astrophysics at the [[Scuola Normale Superiore di Pisa]].{{r|sns}} ...

| period = 1.69 [[Julian year (astronomy)|yr]] (616.24 [[Julian year (astronomy)|d]]) ...Spacewatch II]] at an [[apparent magnitude]] of 20 using a {{convert|1.8|m|in|adj=on|sp=us}} [[reflecting telescope]].<ref name="MPEC2003-E34"/> It has a ...

{{Short description|Julian Date (JD) corrected for differences in the Earth's position with respect to the Sun}} ...ime the event is observed depends on the changing position of the observer in the Solar System. Before multiple observations can be combined, they must b ...

{{Short description|Random fluctuations in radio waves of celestial origin}} ...scintillation is the result of radio waves traveling through fluctuations in the density of the [[electron]] and [[proton]]s that make up the [[solar wi ...

...book of [[astronomical tables]] written by [[Maria Cunitz]] and published in 1650. As Maria Cunitz was the daughter of both a physician and mathematicia ...tions, leading to inaccuracies within her work. Astronomical tables of the time all contained computational errors, so despite these errors, Urania Propiti ...

of the initial power spectrum of fluctuations in the [[cold dark matter]] ...tratum", [https://ui.adsabs.harvard.edu/abs/1974A%26A....37..225M/abstract Astronomy and Astrophysics, vol. 37, no. 2, Dec. 1974, p. 225-228]</ref> ...

'''Nodal precession''' is the [[precession]] of the [[orbital plane (astronomy)|orbital plane]] of a [[satellite]] around the [[rotation]]al axis of an [[ ...ital plane would remain fixed in space around the gravitational [[primary (astronomy)|primary body]]. However, most bodies rotate, which causes an [[equatorial ...

...he parallactic angle is 0° or 180° when the object crosses the [[meridian (astronomy)|meridian]]. ...'s disk are aligned with the vertical and horizontal direction of the view in the telescope. With an [[altazimuth mount]], those directions are rotated b ...

...is an [[Astrophysicists|astrophysicist]] who is Professor of Extragalactic Astronomy at the [[University of Manchester]]. ...ecame Professor of Extragalactic Astronomy at the University of Manchester in 2020.{{citation needed|date= September 2023}} ...

...ce to obtain an amplitude like the measured one or higher, if the analysed time series were [[random]]?” ...time series to be averaged to zero before applying the DFT, which is done in many practical applications. When a zero-mean corrected dataset has to be s ...

...ved the [[CNRS Silver Medal]] in 1994 and the [[Milutin Milankovic Medal]] in 2019. Since 2003, he is a member of the [[French Academy of Sciences]].<ref ...esis in 1984. He became a CNRS researcher at the [[Bureau des Longitudes]] in 1985. ...

...in the [[Bakhshali manuscript]], a document believed to have been composed in the early centuries of the Common Era.<ref name="Datta1"/> ...a of a different denomination. It is also assumed that ''phala'' increases in proportion to ''pramāṇa''. The unknown quantity is called ''icchā-phala'', ...

...first systematic survey of the radio sky was completed by [[Grote Reber]] in April 1943.<ref name="Becker1995" /> ...Society – Palomar Observatory Sky Survey|Palomar Observatory Sky Survey]] in terms of resolution and sensitivity.<ref name="Becker1995" /> ...

...om 2010 until his death in late 2015 he was an [[emeritus]] professor of [[astronomy]] at the [[University of California, Berkeley]]. ...ies. In 1964 Spinrad was invited to return to Berkeley as a professor, and in 1968 he received tenure.<ref name="oral_history"/><ref name="berkeley_astro ...

{{Short description|Variance in a celestial body's axis of rotation over time}} ...en ''[[axial precession|precession]]'', which is a steady long-term change in the axis of rotation, and ''nutation'', which is the combined effect of sim ...