This reminds me of one of the images in APOD which shows the same phenomenon in the hornet.
APOD

Enjoy! 


Maximum speed, without external weapons, is estimated to be Mach 1.82 in supercruise mode;[51] as demonstrated by General John P. Jumper, former US Air Force Chief of Staff, when his Raptor exceeded Mach 1.7 without afterburners on 13 January 2005.[52] With afterburners, it is "greater than Mach 2.0" (1,317 mph, 2,120 km/h), according to Lockheed Martin; however, the Raptor can easily exceed its design speed limits, particularly at low altitudes, with max-speed alerts to help prevent the pilot from exceeding them.
Originally posted by jkrog08
reply to post by Eurisko2012
Yea, it is called "Supercruise", it is what separates the Raptor from everything else. The F22 is the worlds first gen 5 fighter.
Originally posted by jkrog08
reply to post by Eurisko2012
Yea, it is called "Supercruise", it is what separates the Raptor from everything else.
From what I am reading, what makes the F22 unique regarding supercruise is that it can remain in supercruise for very long periods of time and during normal combat operations due to the fact that the engines are highly efficient or something like that.