Little Bang Posted July 10, 2005 Report Posted July 10, 2005 Can Anyone explain the apparent oval shape of the CMB anisotropy map? Quote
C1ay Posted July 10, 2005 Report Posted July 10, 2005 Can Anyone explain the apparent oval shape of the CMB anisotropy map?From the WMAP site, "...projected onto an oval, similar to a map of the Earth...". It is only for convenience, the way cartographers layout the Earth on an oval. Quote
Little Bang Posted July 10, 2005 Author Report Posted July 10, 2005 Do you know where this picture came from? I'm still curious to know if it's supposed to be a three dimensional representation of the CMB in the visible universe. Quote
C1ay Posted July 10, 2005 Report Posted July 10, 2005 The details are explained here on the WMAP site. Quote
Little Bang Posted July 11, 2005 Author Report Posted July 11, 2005 Ok I understand, I guess if the data used to make that map were displayed in a three dimensional image it would appear as a sphere? Quote
EWright Posted July 16, 2005 Report Posted July 16, 2005 Ok I understand, I guess if the data used to make that map were displayed in a three dimensional image it would appear as a sphere? They say it appears spherical because it's measured uniformaly in every direction from earth. However this does not mean (according to "them") that earth is at the center of the universe. Rather, it would be measured at the same distance from anywhere in the universe and appear just as spherical, because it happened everywhere at the same time. It is a time factor reaching us now and everywhere else in the universe at its current temp 13.7 billion years after the fact. Quote
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