编辑“︁NGC 4151”︁（章节）

== X射線源 ==
[[File:X-ray 'Echoes' Probe Habitat of Monster Black Hole.ogv|thumb|upright=1.2|right|天文學家以[[歐洲太空總署]]的[[XMM-牛顿卫星]]觀測資料發現了來自NGC 4151的長期X射線輻射訊號。當核心中的黑洞發出X射線閃焰，其外圍的吸積盤反映了之後半小時的輻射強度。]]
NGC 4151的第一個X射線源是在1970年12月24日被發現的，發現的是X射線天文衛星[[烏呼魯衛星|烏呼魯]]<ref name=Gursky71>{{cite journal |author=Gursky H, Kellogg EM, Leong C, Tananbaum H, Giacconi R |title=Detection of X-Rays from the Seyfert Galaxies NGC 1275 and NGC 4151 by the UHURU Satellite |journal=Ap J. |volume=165 |issue=4 |pages=L43-8 |url=http://adsabs.harvard.edu/abs/1971ApJ...165L..43G |doi=10.1086/180713 |date=Apr 1971 |access-date=2011-01-19 |archive-date=2019-08-07 |archive-url=https://web.archive.org/web/20190807133906/http://adsabs.harvard.edu/abs/1971ApJ...165L..43G }}</ref>。

[[HEAO 1]]在 1H 1210+393偵測到NGC 4151的另一個X射線源，它在[[烏呼魯衛星|烏呼魯]]的誤差框之外<ref name=Wood>{{cite journal |author=Wood KS, Meekins JF, Yentis DJ, Smathers HW, McNutt DP, Bleach RD |title=The HEAO A-1 X-ray source catalog |journal=Ap J Suppl Ser. |volume=56 |issue=12 |pages=507–649 |url=http://articles.adsabs.harvard.edu/full/1984ApJS...56..507W/0000507.000.html |date=December 1984 |access-date=2011-01-19 |archive-date=2020-10-07 |archive-url=https://web.archive.org/web/20201007025806/http://articles.adsabs.harvard.edu/full/1984ApJS...56..507W/0000507.000.html }}</ref>。

[[愛因斯坦衛星|愛因斯坦天文台]]在NGC 4151內觀測到一個[[蝎虎座BL型天體]]1E 1207.9+3945 (1E星表) <ref name=Warwick>{{ cite journal |author=Warwick RS, Done C, Smith DA |title=The soft X-ray spectrum of NGC 4151 revisited |journal=Mon Not Roy Astron Soc (MNRAS). |volume=275 |issue=4 |pages=1003–16 |url=http://adsabs.harvard.edu/full/1995MNRAS.275.1003W |date=Aug 1995}}</ref>。 [[倫琴衛星|ROSAT]]在NGC 4151 (20 Mpc)場：1E 1207.9+3945，[[赤經]] (2000) {{RA|12|10|26.2}}[[赤緯]] (2000) {{DEC|+39|29|03}}偵測到一個明亮的X射線源<ref name=Warwick/>。