FUNCTION fCosmoComovDist2ObjectsRADEC

Returns the comoving distance between 2 objects at different redshifts and locations in the sphere.

Parameters:

@Redshift1 float: redshift of object 1.
@Ra1 float: right asension of object 1 in degrees.
@Dec1 float: declination of object 1 in degrees.
@Redshift2 float: redshift of object 2.
@Ra2 float: right asension of object 2 in degrees.
@Dec2 float: declination of object 2 in degrees.
@OmegaM float: matter density. If set as DEFAULT, then 0.27891507
@OmegaL float: dark energy density. If set as DEFAULT, then 0.721
@OmegaR float: radiation density. If set as DEFAULT, then 8.493e-5
@omega0 float: dark energy state equation. If set as DEFAULT, then -1
@h_0 float: (hubble constant[Km/s/MPc])/(100[Km/s/MPc]). If set as DEFAULT, then 0.701 Reference: http://lambda.gsfc.nasa.gov/product/map/dr3/pub_papers/fiveyear/cosmology/wmap_5yr_cosmo.pdf

returns ComovDist float: comoving distance between the two objects.
select dbo.fCosmoComovDist2ObjectsRADEC(0.1,0,90,0.1,0,-90,0.27891507,0.721,8.493e-5,-1,0.701);select dbo.fCosmoComovDist2ObjectsRADEC(0.1,0,90,0.1,0,-90,DEFAULT,DEFAULT,DEFAULT,DEFAULT,DEFAULT)
return 837.027616114209 and 837.027616114209
see also fCosmoZfromDc

Input and output parameters

name type length inout pnum

float 8 input 0

@Redshift1 float 8 input 1

@Ra1 float 8 input 2

@Dec1 float 8 input 3

@Redshift2 float 8 input 4

@Ra2 float 8 input 5

@Dec2 float 8 input 6

@OmegaM float 8 input 7

@OmegaL float 8 input 8

@OmegaR float 8 input 9

@omega0 float 8 input 10

@h_0 float 8 input 11

name	type	length	inout	pnum
	float	8	input	0
@Redshift1	float	8	input	1
@Ra1	float	8	input	2
@Dec1	float	8	input	3
@Redshift2	float	8	input	4
@Ra2	float	8	input	5
@Dec2	float	8	input	6
@OmegaM	float	8	input	7
@OmegaL	float	8	input	8
@OmegaR	float	8	input	9
@omega0	float	8	input	10
@h_0	float	8	input	11