Asteroids@home: Difference between revisions

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= Why =

Big Bang! Everything explodes everywhere and gravity plays a critical role in the formation of structures in the universe. As matter clumps together under the influence of gravity, it leads to the formation of galaxies, stars, planets, and other ~~celestial bodies~~.

[[wikipedia:Big_Bang|'''''Big Bang''''']]! Everything explodes everywhere and '''''gravity''''' plays a critical role in the formation of structures in the universe. As matter clumps together under the influence of gravity, it leads to the formation of '''''galaxies''''', '''''stars''''', '''''planets''''', and other '''''astronomical objects'''''.

Within galaxies, planetary systems like our own form as a result of the condensation of material within protoplanetary disks. These disks of gas and dust around young stars gradually form planets and other small objects like comets and asteroids.

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= About =

[https://asteroidsathome.net/boinc/ '''''Asteroids@home'''''] is a volunteer distributed computing project that needs your help to derive the shape and spin for a significant part of the asteroid population. The BOINC application employs photometric measurements of asteroids from observed data. The results are asteroid convex shape models with the direction of the spin axis and the rotation period. The models are published in peer-reviewed journals and then made public in the [https://astro.troja.mff.cuni.cz/projects/asteroids3D '''''DAMIT'''''] database. Database of Asteroid Models from Inversion Techniques (DAMIT) is providing the astronomical community access to reliable and up-to-date physical models of asteroids - i.e., their shapes, rotation periods, and spin axis directions.

[https://asteroidsathome.net/boinc/ '''''Asteroids@home'''''] is a '''''[[wikipedia:List_of_volunteer_computing_projects|volunteer distributed computing project]]''''' that needs your help to derive the shape and spin for a significant part of the asteroid population. The '''''[[wikipedia:Berkeley_Open_Infrastructure_for_Network_Computing|BOINC]]''''' application employs photometric measurements of asteroids from observed data. The results are asteroid convex shape models with the direction of the spin axis and the rotation period. The models are published in peer-reviewed journals and then made public in the [https://astro.troja.mff.cuni.cz/projects/asteroids3D '''''DAMIT'''''] database. Database of Asteroid Models from Inversion Techniques (DAMIT) is providing the astronomical community access to reliable and up-to-date physical models of asteroids - i.e., their shapes, rotation periods, and spin axis directions.

With a huge amount of photometric data coming from big all-sky surveys as well as from backyard astronomers, asteroid '''''[[wikipedia:Light_curve|Light curve inversion]]''''' modeling becomes viable. Light curve inversion is a mathematical technique used to model the surfaces of rotating objects from their brightness variations. However, data from surveys are often ''sparse in time'', which means that the rotation period - the basic physical parameter - cannot be estimated from the data easily. Contrary to classical light curves where the period is "visible" in the data, a wide interval of all possible periods has to be scanned densely when analyzing sparse data. This fact enormously enlarges the computational time and the only practical way to efficiently handle photometry of hundreds of thousands of asteroids is to use distributed computing. Moreover, the problem is ideal for parallelization - the period interval can be divided into smaller parts that are searched separately and then the results are joined together.[https://asteroidsathome.net/]

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 = Why =
-Big Bang! Everything explodes everywhere and gravity plays a critical role in the formation of structures in the universe. As matter clumps together under the influence of gravity, it leads to the formation of galaxies, stars, planets, and other celestial bodies.
+[[wikipedia:Big_Bang|'''''Big Bang''''']]! Everything explodes everywhere and '''''gravity''''' plays a critical role in the formation of structures in the universe. As matter clumps together under the influence of gravity, it leads to the formation of '''''galaxies''''', '''''stars''''', '''''planets''''', and other '''''astronomical objects'''''.
 Within galaxies, planetary systems like our own form as a result of the condensation of material within protoplanetary disks. These disks of gas and dust around young stars gradually form planets and other small objects like comets and asteroids.
@@ Line 13: / Line 13: @@
 = About =
-[https://asteroidsathome.net/boinc/ '''''Asteroids@home'''''] is a volunteer distributed computing project that needs your help to derive the shape and spin for a significant part of the asteroid population. The BOINC application employs photometric measurements of asteroids from observed data. The results are asteroid convex shape models with the direction of the spin axis and the rotation period. The models are published in peer-reviewed journals and then made public in the [https://astro.troja.mff.cuni.cz/projects/asteroids3D '''''DAMIT'''''] database. Database of Asteroid Models from Inversion Techniques (DAMIT) is providing the astronomical community access to reliable and up-to-date physical models of asteroids - i.e., their shapes, rotation periods, and spin axis directions.
+[https://asteroidsathome.net/boinc/ '''''Asteroids@home'''''] is a '''''[[wikipedia:List_of_volunteer_computing_projects|volunteer distributed computing project]]''''' that needs your help to derive the shape and spin for a significant part of the asteroid population. The '''''[[wikipedia:Berkeley_Open_Infrastructure_for_Network_Computing|BOINC]]''''' application employs photometric measurements of asteroids from observed data. The results are asteroid convex shape models with the direction of the spin axis and the rotation period. The models are published in peer-reviewed journals and then made public in the [https://astro.troja.mff.cuni.cz/projects/asteroids3D '''''DAMIT'''''] database. Database of Asteroid Models from Inversion Techniques (DAMIT) is providing the astronomical community access to reliable and up-to-date physical models of asteroids - i.e., their shapes, rotation periods, and spin axis directions.
 With a huge amount of photometric data coming from big all-sky surveys as well as from backyard astronomers, asteroid '''''[[wikipedia:Light_curve|Light curve inversion]]''''' modeling becomes viable. Light curve inversion is a mathematical technique used to model the surfaces of rotating objects from their brightness variations. However, data from surveys are often ''sparse in time'', which means that the rotation period - the basic physical parameter - cannot be estimated from the data easily. Contrary to classical light curves where the period is "visible" in the data, a wide interval of all possible periods has to be scanned densely when analyzing sparse data. This fact enormously enlarges the computational time and the only practical way to efficiently handle photometry of hundreds of thousands of asteroids is to use distributed computing. Moreover, the problem is ideal for parallelization - the period interval can be divided into smaller parts that are searched separately and then the results are joined together.[https://asteroidsathome.net/]