Results 21 to 30 of about 382 (187)

A Candidate Location for Planet Nine from an Interstellar Meteoroid: The Messenger Hypothesis

open access: yesThe Astrophysical Journal, 2023
The existence of a hypothetical Planet Nine lurking in the outer solar system has been invoked as a plausible explanation for the anomalous clustering in the orbits of trans-Neptunian objects.
Hector Socas-Navarro
doaj   +1 more source

Radio Emissions from Earth’s Foreshock and Bolides [PDF]

open access: yes, 2021
It is well understood that Earth’s foreshock radiation is due to the bow shock deflecting the solar wind and accelerating electrons upstream into the foreshock where they produce Langmuir waves and radio emissions.
Oppel, Patrick
core  

Bolide meteor streams [PDF]

open access: yesProceedings of the International Astronomical Union, 2004
The current version of the IAU Meteor Data Centre catalogue of photographic orbits comprising the orbital and geophysical data of 4581 meteors is applied for a more representative search of the mean orbits of bolide meteor streams among photographic meteors.
Štefan Gajdoš, Vladimir Porubcan
openaire   +1 more source

Stimmung, Arte Ambiental e corpo político em Hélio Oiticica

open access: yesPoiésis, 2018
Este breve ensaio tensiona o conceito de Stimmung (atmosfera) de Hans Ulrich Gumbrecht e as leituras de ambiência na Arte Ambiental de Hélio Oiticica.
Luiza B. Amaral
doaj   +1 more source

Analysis of remarkable bolides observed between June and July 2022 in the framework of the Southwestern EuropeMeteor Network [PDF]

open access: yes, 2022
Some of the bright bolides spotted in the framework of the Southwestern Europe Meteor Network from June to July 2022 are discussed here. These were observed from Spain. Their absolute magnitude ranges from –6 to –11.
Ávila, D.   +14 more
core  

Global Infrasonic Monitoring of Large Bolides. [PDF]

open access: yes, 2001
Using recent infrasonic data (1995-2001) and older infrasonic data recorded by AFTAC (1960-1974), we have refined our estimates of the global influx rate (cumulative influx) of large bolides with sufficient strength to deeply penetrate the atmosphere ...
ReVelle, D. O. (Douglas O.)
core   +3 more sources

A poesia como subtexto

open access: yesRemate de Males, 2019
O ensaio aborda o papel da poesia para a obra do artista Hélio Oiticica a partir de meados dos anos 1960. Em 1964, o artista escreveu um breve texto chamado “poética secreta”, acompanhado de uma série de poemas. O ensaio enfoca o impacto que essa escrita
Pauline Medea Bachmann
doaj   +1 more source

Physics of the Chelyabinsk bolide [PDF]

open access: yesAstronomical School’s Report, 2013
Shown, that estimations of the Chelyabinsk body size order of 20–30 m (15/02/2013 phenomenon), publishing in the press, are overstated significantly. Estimations of its explosion height are wrong. On the basis of the destructions by action of the shock wave, the height of explosion must be no more than 10–12 km. We think, that the Chelyabinsk meteorite
V. G. Kruchinenko   +2 more
openaire   +2 more sources

The remarkable outflows from the galactic microquasar SS433 [PDF]

open access: yes, 2016
In this thesis, I present 4 new, high-resolution observations of the Galactic microquasar SS 433, obtained from the Very Long Baseline Array (VLBA). I show that we can resolve the same ejecta in successive observations separated by ∼ 35 d.
Jeffrey, Robert, Robert Jeffrey
core   +2 more sources

Historical Bolide Infrasound Dataset (1960–1972)

open access: yesData
We present the first fully curated, publicly accessible archive of infrasonic records from ten large bolide events documented by the U.S. Air Force Technical Applications Center’s global microbarometer network between 1960 and 1972.
Elizabeth A. Silber, Rodney W. Whitaker
doaj   +1 more source

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