Project

General

Profile

Actions

Feature #470

closed

Galatic absortion

Added by Julien ZOUBIAN about 11 years ago. Updated about 2 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Start date:
2012-12-21
Due date:
% Done:

0%

Estimated time:

Description

Our galaxy absorption could significantly decrease the signal of a distant source depending mostly on the galactic latitude.
Generally the transmission of our galaxy is define as function of wavelength as
trans_gal = 10**(-0.4*A(lambda, alpha,delta))
where A is the absorption and depend on the wavelength and the source coordinate on the sky.
See Schlegel 1998, Jouvel 2011 and Zoubian in prep for more details.

A very convenient way to implement that is to ask to the user to provide the spectra A(lambda) or directly trans_gal(lambda) for a given (alpha,delta).
Then you have just apply the transmission on the signal.
Note that the sky background like zodiacal light is not affect by this absorption.

Actions #1

Updated by Christian Surace about 2 years ago

  • Status changed from New to Closed
Actions

Also available in: Atom PDF