Pusat Galaksi: Perbedaan antara revisi

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Revisi terkini sejak 11 Desember 2023 06.51

Pusat Galaksi adalah titik rotasi dari sebuah galaksi, contohnya adalah galaksi Bima Sakti,yang terletak sekitar 8.33±0.35 kiloparsek (~27.000±1000 tahun cahaya) dari Bumi ^[1]^[2]^[3]^[4]^[5] diarah rasi Sagitarius, Ophiuchus dan Scorpius di mana Galaksi Bima Sakti terlihat lebih cemerlang. Pada pusat ini ditemukan Lubang Hitam supermasif bernama Sagittarius A*

Lokasi dan Bukti[sunting | sunting sumber]

Karena debu antar bintang yang menutupi jarak pandang, pusat galaksi tidak bisa dipelajari lewat spektrum warna, sinar ultra ungu, maupun sinar X. Informasi yang bisa didapat tentang pusat galaksi hanya melalui observasi pada sinar gama, Sinar X keras (hard X-ray), inframerah,Astronomi submilimeter dan Gelombangradio. Koordinat pusat galaksi pertama kalinya ditemukan oleh Harlow Shapley pada tahun 1918 di dalam tulisannya mengenai distribusi 'globular cluster'. Di dalam persamaan sistem ekuator angka ini adalah: RA 17h45m40.04s, Dec -29° 00' 28.1" (J2000 epoch).

Referensi[sunting | sunting sumber]

^ Reid, Mark J. (1993). "The distance to the center of the Galaxy". Annual review of astronomy and astrophysics. 31 (1): 345–372. Bibcode:1993ARA&A..31..345R. doi:10.1146/annurev.aa.31.090193.002021.
^ Eisenhauer, F.; Schödel, R.; Genzel, R.; Ott, T.; Tecza, M.; Abuter, R.; Eckart, A.; Alexander, T. (2003). "A Geometric Determination of the Distance to the Galactic Center". The Astrophysical Journal. 597 (2): L121–L124. arXiv:astro-ph/0306220 . Bibcode:2003ApJ...597L.121E. doi:10.1086/380188.
^ Horrobin, M.; Eisenhauer, F.; Tecza, M.; Thatte, N.; Genzel, R.; Abuter, R.; Iserlohe, C.; Schreiber, J.; Schegerer, A.; Lutz, D.; Ott, T.; Schödel, R. (2004). "First results from SPIFFI. I: The Galactic Center" (PDF). Astronomische Nachrichten. 325 (2): 120–123. Bibcode:2004AN....325...88H. doi:10.1002/asna.200310181. Diarsipkan dari versi asli (PDF) tanggal 2007-06-21. Diakses tanggal 2007-05-10.
^ Majaess D. J., Turner D. G., Lane D. J. (2009). Characteristics of the Galaxy according to Cepheids, MNRAS
^ Gillessen, S. (2009). "Monitoring Stellar Orbits Around the Massive Black Hole in the Galactic Center". The Astrophysical Journal. 692 (2): 1075–1109. arXiv:0810.4674 . Bibcode:2009ApJ...692.1075G. doi:10.1088/0004-637X/692/2/1075.

Daftar Pustaka[sunting | sunting sumber]

Eckart, A. (2005). The Black Hole at the Center of the Milky Way. London: Imperial College Press. ISBN 1860945678.
Melia, Fulvio (2003). The Black Hole in the Center of Our Galaxy. Princeton: Princeton University Press. ISBN 0691095051.
Melia, Fulvio (2007). The Galactic Supermassive Black Hole. Princeton: Princeton University Press. ISBN 9780691131290.

Pranala luar[sunting | sunting sumber]

[distance1-1] Reid, Mark J. (1993). "The distance to the center of the Galaxy". Annual review of astronomy and astrophysics. 31 (1): 345–372. Bibcode:1993ARA&A..31..345R. doi:10.1146/annurev.aa.31.090193.002021.

[distance2-2] Eisenhauer, F.; Schödel, R.; Genzel, R.; Ott, T.; Tecza, M.; Abuter, R.; Eckart, A.; Alexander, T. (2003). "A Geometric Determination of the Distance to the Galactic Center". The Astrophysical Journal. 597 (2): L121–L124. arXiv:astro-ph/0306220 . Bibcode:2003ApJ...597L.121E. doi:10.1086/380188.

[distance3-3] Horrobin, M.; Eisenhauer, F.; Tecza, M.; Thatte, N.; Genzel, R.; Abuter, R.; Iserlohe, C.; Schreiber, J.; Schegerer, A.; Lutz, D.; Ott, T.; Schödel, R. (2004). "First results from SPIFFI. I: The Galactic Center" (PDF). Astronomische Nachrichten. 325 (2): 120–123. Bibcode:2004AN....325...88H. doi:10.1002/asna.200310181. Diarsipkan dari versi asli (PDF) tanggal 2007-06-21. Diakses tanggal 2007-05-10.

[majaess2009-4] Majaess D. J., Turner D. G., Lane D. J. (2009). Characteristics of the Galaxy according to Cepheids, MNRAS

[gillessenetal2009-5] Gillessen, S. (2009). "Monitoring Stellar Orbits Around the Massive Black Hole in the Galactic Center". The Astrophysical Journal. 692 (2): 1075–1109. arXiv:0810.4674 . Bibcode:2009ApJ...692.1075G. doi:10.1088/0004-637X/692/2/1075.

[1]

[2]

[3]

[4]

[5]

@@ Baris 1: / Baris 1: @@
-[[Berkas:Galactic Cntr full cropped.jpg|thumb|300px|right|Pusat Galasi terlihat oleh salah satu teleskop infra merah 2MASS.]]
+[[Berkas:Galactic Cntr full cropped.jpg|jmpl|300px|ka|Pusat Galasi terlihat oleh salah satu teleskop infra merah 2MASS.]]
+'''Pusat Galaksi''' adalah titik rotasi dari sebuah galaksi, contohnya adalah galaksi [[Bima Sakti]],yang terletak sekitar 8.33±0.35 kiloparsek (~27.000±1000 tahun cahaya) dari [[Bumi]] <ref name="distance1">{{cite journal|last = Reid|first = Mark J.|title=The distance to the center of the Galaxy|journal=Annual review of astronomy and astrophysics|year=1993|volume=31|issue = 1| pages=345–372|bibcode=1993ARA&A..31..345R|accessdate=2007-05-10|doi= 10.1146/annurev.aa.31.090193.002021}}</ref><ref name="distance2">{{cite journal|author=Eisenhauer, F.; Schödel, R.; Genzel, R.; Ott, T.; Tecza, M.; Abuter, R.; Eckart, A.; Alexander, T.|title=A Geometric Determination of the Distance to the Galactic Center| journal=The Astrophysical Journal|year=2003|volume=597|issue=2|pages=L121–L124|bibcode=2003ApJ...597L.121E | arxiv=astro-ph/0306220|doi=10.1086/380188}}</ref><ref name="distance3">{{cite journal|author=Horrobin, M.; Eisenhauer, F.; Tecza, M.; Thatte, N.; Genzel, R.; Abuter, R.; Iserlohe, C.; Schreiber, J.; Schegerer, A.; Lutz, D.; Ott, T.; Schödel, R.|title=First results from SPIFFI. I: The Galactic Center|journal=Astronomische Nachrichten|year=2004|volume=325|issue=2|pages=120–123|url=http://www.mpe.mpg.de/SPIFFI/preprints/first_result_an1.pdf|format=PDF|accessdate=2007-05-10|doi=10.1002/asna.200310181|bibcode=2004AN....325...88H|archive-date=2007-06-21|archive-url=https://web.archive.org/web/20070621072120/http://www.mpe.mpg.de/SPIFFI/preprints/first_result_an1.pdf|dead-url=yes}}</ref><ref name=majaess2009>Majaess D. J., Turner D. G., Lane D. J. (2009). [http://adsabs.harvard.edu/abs/2009arXiv0903.4206M ''Characteristics of the Galaxy according to Cepheids''], MNRAS</ref><ref name=gillessenetal2009>{{cite journal|last=Gillessen| first = S.|coauthors=Eisenhauer; Trippe; Alexander; Genzel; Martins; Ott|title=Monitoring Stellar Orbits Around the Massive Black Hole in the Galactic Center|journal=The Astrophysical Journal|volume=692|issue=2|pages=1075–1109|year=2009|doi=10.1088/0004-637X/692/2/1075|accessdate=2010-10-28|bibcode=2009ApJ...692.1075G|arxiv=0810.4674}}</ref> diarah rasi [[Sagitarius]], Ophiuchus dan [[Scorpius]] di mana Galaksi Bima Sakti terlihat lebih cemerlang. Pada pusat ini ditemukan [[Black hole|Lubang Hitam]] supermasif bernama [[Sagittarius A*]]
-'''Pusat Galaksi''' adalah titik rotasi dari galaksi [[Bima Sakti]]. Letaknya adalah sekitar 7,6 kilopersecs (25.000 tahun cahaya) dari [[Bumi]] diarah rasi [[Sagitarius]], Ophiuchus dan [[Scorpius]] dimana Galaksi Bima Sakti terlihat lebih cemerlang. Pada pusat ini ditemukan [[Black hole|Lubang Hitam]] supermasif.
 == Lokasi dan Bukti ==
-Karena debu antar bintang yang menutupi jarak pandang, pusat galaksi tidak bisa dipelajari lewat spektrum warna, sinar ultra ungu, maupun sinar X. Informasi yang bisa didapat tentang pusat galaksi hanya melalui observasi pada sinar gama, Sinar-X keras (hard X-ray), infra merah, sub-milimeter dan gelombang radio.
+Karena debu antar bintang yang menutupi jarak pandang, pusat galaksi tidak bisa dipelajari lewat spektrum warna, sinar ultra ungu, maupun sinar X. Informasi yang bisa didapat tentang pusat galaksi hanya melalui observasi pada [[Astronomi sinar gama|sinar gama]], [[Astronomi sinar X|Sinar X]] keras (hard X-ray), [[Astronomi inframerah|inframerah]],[[Astronomi submilimeter]] dan [[Astronomi radio|Gelombangradio]].
 Koordinat pusat galaksi pertama kalinya ditemukan oleh Harlow Shapley pada tahun 1918 di dalam tulisannya mengenai distribusi 'globular cluster'. Di dalam persamaan sistem ekuator angka ini adalah: [[Right Ascension|RA]] 17h45m40.04s, [[Declination|Dec]] -29° 00' 28.1" ([[J2000]] [[epoch (astronomy)|epoch]]).
@@ Baris 10: / Baris 10: @@
 == Daftar Pustaka ==
-* {{cite book |title=The Black Hole at the Center of the Milky Way |last=Eckart |first=A. |authorlink= |coauthors=Schödel, R.; Straubmeier, C. |year=2005 |publisher=Imperial College Press |location=London |isbn=1860945678 |pages= |url= }}
+* {{cite book|title=The Black Hole at the Center of the Milky Way|last=Eckart|first=A.|authorlink=|coauthors=Schödel, R.; Straubmeier, C.|year=2005|publisher=Imperial College Press|location=London|isbn=1860945678|pages=|url=https://archive.org/details/blackholeatcente0000ecka}}
-* {{cite book |title=The Black Hole in the Center of Our Galaxy |last=Melia |first=Fulvio |authorlink=Fulvio Melia |coauthors= |year=2003 |publisher=Princeton University Press |location=Princeton |isbn=0691095051 |pages= |url= }}
+* {{cite book|title=The Black Hole in the Center of Our Galaxy|last=Melia|first=Fulvio|authorlink=Fulvio Melia|coauthors=|year=2003|publisher=Princeton University Press|location=Princeton|isbn=0691095051|pages=|url=https://archive.org/details/blackholeatcente0000meli}}
-* {{cite book |title=The Galactic Supermassive Black Hole |last=Melia |first=Fulvio |authorlink= |coauthors= |year=2007 |publisher=Princeton University Press |location=Princeton |isbn=9780691131290 |pages= |url= }}
+* {{cite book|title=The Galactic Supermassive Black Hole|last=Melia|first=Fulvio|authorlink=|coauthors=|year=2007|publisher=Princeton University Press|location=Princeton|isbn=9780691131290|pages=|url=https://archive.org/details/galacticsupermas0000meli}}
 == Pranala luar ==
-* [http://www.astro.ucla.edu/~ghezgroup/gc/ UCLA Galactic Center Group]
+* [http://www.astro.ucla.edu/~ghezgroup/gc/ UCLA Galactic Center Group] {{Webarchive|url=https://web.archive.org/web/20180104110830/http://www.astro.ucla.edu/~ghezgroup/gc/ |date=2018-01-04 }}
 * [http://www.mpe.mpg.de/ir/GC/ Max Planck Institute for Extraterrestrial Physics Galactic Center Group]
 * [http://press.princeton.edu/titles/8453.html The Galactic Supermassive Black Hole]
-* [http://www.icpress.co.uk/physics/p394.html The Black Hole at the Center of the Milky Way]
+* [http://www.icpress.co.uk/physics/p394.html The Black Hole at the Center of the Milky Way] {{Webarchive|url=https://web.archive.org/web/20070706183425/http://www.icpress.co.uk/physics/p394.html |date=2007-07-06 }}
-* [http://www.einstein-online.info/en/spotlights/milkyway_bh/index.html The dark heart of the Milky Way]
+* [http://www.einstein-online.info/en/spotlights/milkyway_bh/index.html The dark heart of the Milky Way] {{Webarchive|url=https://web.archive.org/web/20071031014713/http://www.einstein-online.info/en/spotlights/milkyway_bh/index.html |date=2007-10-31 }}
 * <!-- [http://www.mpifr-bonn.mpg.de/staff/hfalcke/bh/ Slideshow on the galactic center] broken link -->
-* [http://www.space.com/scienceastronomy/astronomy/boom_times_020610-1.html Dramatic Increase in Supernova Explosions Looms]
+* [https://web.archive.org/web/20020808061115/http://www.space.com/scienceastronomy/astronomy/boom_times_020610-1.html Dramatic Increase in Supernova Explosions Looms]
-* [[APOD]]:
+* [[Astronomy Picture of the Day|APOD]]:
 ** [http://antwrp.gsfc.nasa.gov/apod/ap970121.html Journey to the Center of the Galaxy]
 ** [http://antwrp.gsfc.nasa.gov/apod/ap970501.html A Galactic Cloud of Antimatter]
@@ Baris 28: / Baris 28: @@
 ** [http://antwrp.gsfc.nasa.gov/apod/ap051023.html At the Center of the Milky Way]
 ** [http://antwrp.gsfc.nasa.gov/apod/ap000629.html Galactic Centre Starscape ]
 * [http://www.orbitsimulator.com/gravity/articles/mwblackhole.html A simulation of the stars orbiting the Milky Way's central massive black hole]
 * [http://xstructure.inr.ac.ru/x-bin/theme3.py?level=2&index1=72093 Galactic Center on arxiv.org]
+{{Bima Sakti}}
 [[Kategori:Tata Surya]]
 [[Kategori:Galaksi]]
-[[ar:مركز المجرة]]
-[[ca:Centre galàctic]]
-[[cs:Galaktické jádro]]
-[[de:Galaktisches Zentrum]]
-[[en:Galactic Center]]
-[[es:Centro Galáctico]]
-[[fa:مرکز کهکشانی]]
-[[fi:Linnunradan keskus]]
-[[fr:Centre galactique]]
-[[it:Centro della Via Lattea]]
-[[ja:銀河核]]
-[[ko:은하핵]]
-[[lt:Galaktikos centras]]
-[[nl:Galactisch centrum]]
-[[no:Galaktisk sentrum]]
-[[pl:Centrum Galaktyki]]
-[[pt:Centro da Via Láctea]]
-[[ro:Centru galactic]]
-[[ru:Галактический центр]]
-[[sk:Jadro Galaxie]]
-[[tr:Gökada merkezi]]
-[[zh:銀心]]