Results 1 to 10 of about 6,276,609 (285)

Orbital period change of Dimorphos due to the DART kinetic impact. [PDF]

open access: yesNature, 2023
The Double Asteroid Redirection Test (DART) spacecraft successfully performed the first test of a kinetic impactor for asteroid deflection by impacting Dimorphos, the secondary of near-Earth binary asteroid (65803) Didymos, and changing the orbital ...
Thomas CA   +48 more
europepmc   +3 more sources

A possible solution of the puzzling variation of the orbital period of MXB 1659-298 [PDF]

open access: yes, 2017
MXB 1659-298 is a transient neutron star Low-Mass X-ray binary system that shows eclipses with a periodicity of 7.1 hr. The source went to outburst in August 2015 after 14 years of quiescence.
Burderi, L.   +8 more
core   +5 more sources

Detached cataclysmic variables are crossing the orbital period gap [PDF]

open access: yes, 2016
A central hypothesis in the theory of cataclysmic variable (CV) evolution is the need to explain the observed lack of accreting systems in the ~2-3 h orbital period range, known as the period gap.
Agurto-Gangas, Carolina   +8 more
core   +7 more sources

Dwarf Novae in the Shortest Orbital Period Regime: II. WZ Sge Stars as the Missing Population near the Period Minimum [PDF]

open access: bronze, 2010
WZ Sge-type dwarf novae are characterized by long recurrence times of outbursts (~10 yr) and short orbital periods (
Kato, T.   +3 more
core   +3 more sources

The Keck Planet Search: Detectability and the Minimum Mass and Orbital Period Distribution of Extrasolar Planets [PDF]

open access: bronze, 2008
We analyze 8 years of precise radial velocity measurements from the Keck Planet Search, characterizing the detection threshold, selection effects, and completeness of the survey.
A. Cumming   +5 more
openalex   +2 more sources

Discovery of orbital eccentricity and evidence for orbital period increase of SS433 [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2021
The examination of long-term (1979–2020) photometric observations of SS433 enabled us to discover a non-zero orbital eccentricity of e = 0.05 ± 0.01. We have also found evidence for a secular increase in the orbital period at a rate of $\dot{P}_\mathrm{
A. Cherepashchuk   +3 more
semanticscholar   +1 more source

On Langmuir’s periodic orbit [PDF]

open access: yesArchiv der Mathematik, 2022
Niels Bohr successfully predicted in 1913 the energy levels for the hydrogen atom by applying certain quantization rules to classically obtained periodic orbits. Many physicists tried to apply similar methods to other atoms. In his well-known 1921 paper, I.~Langmuir established numerically the existence of a periodic orbit in the helium atom considered
K. Cieliebak   +2 more
openaire   +2 more sources

Congenital conjunctival cyst detected by prenatal ultrasound [PDF]

open access: yesAmerican Journal of Ophthalmology Case Reports
Purpose: The purpose of this manuscript is to report a rare case of an orbital cyst detected intrauterine with sonography. Observation: A 23-year-old female presented for routine prenatal monitoring when an orbital cyst was detected with a transabdominal
Ryan Gabbard, MD   +5 more
doaj   +2 more sources

An 8.8 Minute Orbital Period Eclipsing Detached Double White Dwarf Binary [PDF]

open access: yesAstrophysical Journal, 2020
We report the discovery of ZTF J2243+5242, an eclipsing double white dwarf binary with an orbital period of just 8.8 minutes, the second known eclipsing binary with an orbital period of less than 10 minutes.
K. Burdge   +15 more
semanticscholar   +1 more source

Orbital Period Refinement of CoRoT Planets with TESS Observations

open access: yesFrontiers in Astronomy and Space Sciences, 2021
CoRoT was the first space mission dedicated to exoplanet detection. Operational between 2007 and 2012, this mission discovered 37 transiting planets, including CoRoT-7b, the first terrestrial exoplanet with a measured size. The precision of the published
Peter Klagyivik    +8 more
doaj   +1 more source

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