Results 101 to 110 of about 1,287,571 (199)
Detecting Dark Objects with Plasma Microlensing by Their Gravitational Wakes
The Astrophysical JournalA moving mass makes a gravitational wake in the partially ionized interstellar medium, which acts as a lens for radio-frequency light. Consequently, plasma microlensing could complement gravitational microlensing in the search for invisible massive ...
M. Sten Delos
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Galactic trajectories of interstellar objects 1I/’Oumuamua, 2I/Borisov, and 3I/ATLAS
Astronomy & AstrophysicsAims. The first interstellar objects, 1I/’Oumuamua, 2I/Borisov, and 3I/ATLAS, were discovered over the past decade. Methods. We follow the trajectories of known interstellar objects in the gravitational potential of the Milky Way galaxy to constrain ...
Kakharov Shokhruz, Loeb Abraham
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Discovery and Preliminary Characterization of a Third Interstellar Object: 3I/ATLAS
The Astrophysical Journal LettersWe report initial observations aimed at the characterization of a third interstellar object. This object, 3I/ATLAS or C/2025 N1 (ATLAS), was discovered on 2025 July 1 UT and has an orbital eccentricity of e ∼ 6.1, perihelion of q ∼ 1.36 au, inclination
Darryl Z. Seligman +46 more
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Asymptotic giant branch-stars in the GLIMPSE database
Astronomy & AstrophysicsAims. In the preceding paper (paper I) we showed that the GLIMPSE database contains millions of asymptotic giant branch (AGB) stars. Their nature follows from two properties: the objects have the same color after correction for interstellar extinction ...
Habing H. J., Habing M. A.
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The fate of interstellar objects during the collapse of molecular clouds - animations
, 2020 Animations of collapsing molecular clouds containing a population of interstellar ...
Pfalzner, Suzanne +3 more
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Precovery Observations of 3I/ATLAS from TESS Suggest Possible Distant Activity
The Astrophysical Journal Letters3I/ATLAS is the third macroscopic interstellar object detected traversing the solar system. Since its initial discovery on UT 2025 July 1, hundreds of hours on a range of observational facilities have been dedicated to measuring the physical properties ...
Adina D. Feinstein +2 more
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Strength Ratios of Diffuse Interstellar Bands in Slightly Reddened Objects
UniverseThe disk of the Milky Way fills the interstellar medium in the form of discrete clouds, many (∼30) light-years across. The average density of this medium is 1 hydrogen atom per cm3 (Oort limit), in the clouds—several dozen atoms, and between the clouds ...
Jacek Krełowski, Arkadii Bondar
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The Implications of ‘Oumuamua on Panspermia
The Astrophysical JournalPanspermia is the hypothesis that life originated on Earth from the bombardment of foreign interstellar ejecta harboring polyextremophile microorganisms. Since the 2017 discovery of the interstellar body ‘Oumuamua (1I/2017 U1) by the Pan-STARRS telescope,
David Cao +2 more
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Predicting Interstellar Object Chemodynamics with Gaia
The Astronomical JournalAbstract The interstellar object (ISO) population of the Milky Way is a product of its stars. However, what is in fact a complex structure in the solar neighborhood has traditionally in ISO studies been described as smoothly distributed.
Hopkins, MJ, Bannister, MT, Lintott, C
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Interstellar objects in a galactic context
Interstellar objects (ISOs) form a vast Galaxy-spanning population with an number density ∼ 1015 pc−3 in the Solar neighbourhood. Though only two members of this population have been observed, 1I/‘Oumuamua and 2I/Borisov, the Vera C. Rubin’s Legacy Survey of Space and Time (LSST) which begins later this year is expected to increase our sample of known ...
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