About: AR Scorpii

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AR Scorpii (AR Sco) is a binary pulsar that consists of a white dwarf and a red dwarf. It is located close to the ecliptic plane in the constellation Scorpius. Parallax measurements made by Gaia put the system at a distance of about 380 light-years (120 parsecs).

Attributes	Values
rdf:type	Thing place dbo:Location schema:Place celestial body star
rdfs:label	AR Scorpii (de) AR Scorpii (en) さそり座AR星 (ja) AR Scorpii (pl) AR Скорпиона (ru) 天蠍座AR (zh)
rdfs:comment	AR Scorpii ist ein veränderliches Doppelsternsystem bestehend aus einem Weißen Zwerg und einem Roten Zwerg im Sternbild Skorpion. Es befindet sich in einer Entfernung von etwa 384 Lichtjahren. Ursprünglich hielt man das System für einen veränderlichen Delta-Scuti-Einzelstern. Erst durch Amateurastronomen wurde erkannt, dass es sich dabei um etwas besonderes handelt, worauf das System genauer untersucht wurde. Entsprechend wurde die Doppelsternnatur erst im Jahre 2016 entdeckt. (de) さそり座AR星（さそりざARせい、英語: AR Scorpii）は、さそり座の方向に約380光年離れた位置にある連星系である。主星は白色矮星で、伴星は太陽よりも小さな赤色矮星である。 (ja) AR Scorpii (AR Sco) – gwiazda podwójna w gwiazdozbiorze Skorpiona. Jest to układ złożony z białego karła i czerwonego karła, odległy od Ziemi o około 380 lat świetlnych. (pl) AR Скорпиона (лат. AR Scorpii) — двойная звезда, которая находится в созвездии Скорпион на расстоянии около 380 световых лет от нас. (ru) 天蠍座AR（AR Scorpii，縮寫：AR Sco）是由快速自轉且有強磁場的白矮星和紅矮星組成的聯星系統。該系統的白矮星是第一顆被發現的白矮星脈衝星。 (zh) AR Scorpii (AR Sco) is a binary pulsar that consists of a white dwarf and a red dwarf. It is located close to the ecliptic plane in the constellation Scorpius. Parallax measurements made by Gaia put the system at a distance of about 380 light-years (120 parsecs). (en)
foaf:name	AR Scorpii (en)
foaf:depiction
dcterms:subject	Binary stars M-type main-sequence stars Objects with variable star designations Scorpius (constellation) White dwarfs 2MASS objects Pulsars
Wikipage page ID	51219012 (xsd:integer)
Wikipage revision ID	1122856726 (xsd:integer)
Link from a Wikipage to another Wikipage	Scorpius Minute Beat (acoustics) Binary stars M-type main-sequence stars Objects with variable star designations Scorpius (constellation) White dwarfs Gaia (spacecraft) Main sequence Delta Scuti variable Stellar parallax White dwarf Ecliptic plane AE Aquarii 2MASS 2MASS objects Pulsars Earth Accretion (astrophysics) Binary pulsar Red dwarf Scorpius (constellation) Variable star designation dbr:File:Artist’s_impression_video_of_the_exotic_binary_star_system_AR_Scorpii_(video).webm
sameAs	AR Scorpii AR Scorpii AR Scorpii AR Scorpii AR Scorpii AR Scorpii AR Scorpii AR Scorpii AR Scorpii
dbp:wikiPageUsesTemplate	dbt:10%5E dbt:Reflist dbt:Short_description dbt:Starbox_astrometry dbt:Starbox_begin dbt:Starbox_catalog dbt:Starbox_character dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_image dbt:Starbox_observe dbt:Starbox_reference dbt:Stars_of_Scorpius dbt:Val dbt:DEC dbt:RA
thumbnail	wiki-commons:Special:FilePath/ARScoLightCurve.png?width=300
class	M5 (en)
component	Red dwarf (en) White dwarf (en)
constell	Scorpius
epoch	J2000 (en)
mass	0.280000 (xsd:double) 0.800000 (xsd:double)
no heading	y (en)
p error	0.040800 (xsd:double)
parallax	8.491800 (xsd:double)
prop mo dec	−51.469 (en)
prop mo ra	9.707000 (xsd:double)
radius	0.010000 (xsd:double)
rotation	117.0 (second)
type	Main sequence White dwarf
has abstract	AR Scorpii (AR Sco) is a binary pulsar that consists of a white dwarf and a red dwarf. It is located close to the ecliptic plane in the constellation Scorpius. Parallax measurements made by Gaia put the system at a distance of about 380 light-years (120 parsecs). AR Scorpii is the first, and as of 2021, the only "white dwarf-pulsar" to be discovered. Its unusual nature was first noticed by amateur astronomers. The 3.56-hour period in AR Scorpii's light curve caused it to be misclassified as a Delta Scuti variable, but in 2016, this period was found to be the binary orbital period. In addition, the system shows very strong optical, ultraviolet, and radio pulsations originating from the red dwarf with a period of just 1.97 minutes, which is a beat period from the orbital rotation and the white dwarf spin. These pulsations occur when a relativistic beam from the white dwarf sweeps across the red dwarf, which then reprocesses the beam into the observed electromagnetic energy. Although the white dwarf shows evidence of accretion in the past, at present it is not accreting significantly, and the system is powered by the spin-down of the white dwarf. The white dwarf's rotation will slow down on a timescale of 107 years. It has a radius of about 7×103 km, about the same size as Earth. (en) AR Scorpii ist ein veränderliches Doppelsternsystem bestehend aus einem Weißen Zwerg und einem Roten Zwerg im Sternbild Skorpion. Es befindet sich in einer Entfernung von etwa 384 Lichtjahren. Ursprünglich hielt man das System für einen veränderlichen Delta-Scuti-Einzelstern. Erst durch Amateurastronomen wurde erkannt, dass es sich dabei um etwas besonderes handelt, worauf das System genauer untersucht wurde. Entsprechend wurde die Doppelsternnatur erst im Jahre 2016 entdeckt. (de) さそり座AR星（さそりざARせい、英語: AR Scorpii）は、さそり座の方向に約380光年離れた位置にある連星系である。主星は白色矮星で、伴星は太陽よりも小さな赤色矮星である。 (ja)

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