diff options
Diffstat (limited to 'fg21sim/galactic')
| -rw-r--r-- | fg21sim/galactic/freefree.py | 66 |
1 files changed, 33 insertions, 33 deletions
diff --git a/fg21sim/galactic/freefree.py b/fg21sim/galactic/freefree.py index a4d8ad6..75dfbb7 100644 --- a/fg21sim/galactic/freefree.py +++ b/fg21sim/galactic/freefree.py @@ -3,6 +3,27 @@ """ Diffuse Galactic free-free emission simulations. + +References +---------- +.. [dickinson2003] + Dickinson, C.; Davies, R. D.; Davis, R. J., + "Towards a free-free template for CMB foregrounds", + 2003, MNRAS, 341, 369, + http://adsabs.harvard.edu/abs/2003MNRAS.341..369D + +.. [finkbeiner2003] + Finkbeiner, Douglas P., + "A Full-Sky Hα Template for Microwave Foreground Prediction", + 2003, ApJS, 146, 407, + http://adsabs.harvard.edu/abs/2003ApJS..146..407F + +.. [schlegel1998] + Schlegel, David J.; Finkbeiner, Douglas P.; Davis, Marc, + "Maps of Dust Infrared Emission for Use in Estimation of Reddening + and Cosmic Microwave Background Radiation Foregrounds", + 1998, ApJ, 500, 525, + http://adsabs.harvard.edu/abs/1998ApJ...500..525S """ import os @@ -23,9 +44,9 @@ class FreeFree: """ Simulate the diffuse Galactic free-free emission. - The [Dickinson2003]_ method is followed to derive the free-free template. - The H\alpha survey map [Finkbeiner2003]_ is first corrected for dust - absorption using the infrared 100-\mu{}m dust map [Schlegel1998]_, + The [dickinson2003] method is followed to derive the free-free template. + The all-sky Hα survey map [Finkbeiner2003] is first corrected for dust + absorption using the infrared 100-μm dust map [Schlegel1998], and then converted to free-free emission map (brightness temperature). Parameters @@ -36,28 +57,7 @@ class FreeFree: Attributes ---------- - ??? - - References - ---------- - .. [Dickinson2003] - Dickinson, C.; Davies, R. D.; Davis, R. J., - "Towards a free-free template for CMB foregrounds", - 2003, MNRAS, 341, 369, - http://adsabs.harvard.edu/abs/2003MNRAS.341..369D - - .. [Finkbeiner2003] - Finkbeiner, Douglas P., - "A Full-Sky Hα Template for Microwave Foreground Prediction", - 2003, ApJS, 146, 407, - http://adsabs.harvard.edu/abs/2003ApJS..146..407F - - .. [Schlegel1998] - Schlegel, David J.; Finkbeiner, Douglas P.; Davis, Marc, - "Maps of Dust Infrared Emission for Use in Estimation of Reddening - and Cosmic Microwave Background Radiation Foregrounds", - 1998, ApJ, 500, 525, - http://adsabs.harvard.edu/abs/1998ApJ...500..525S + TODO """ # Component name name = "Galactic free-free" @@ -90,28 +90,28 @@ class FreeFree: def _load_maps(self): """ - Load the H{\alpha} map, and dust map. + Load the Hα map, and 100-μm dust map. """ sky = get_sky(self.configs) logger.info("Loading H[alpha] map ...") self.halphamap = sky.load(self.halphamap_path) - # TODO: Validate & convert unit + # Validate input map unit if self.halphamap_unit != au.Unit("Rayleigh"): raise ValueError("unsupported Halpha map unit: {0}".format( self.halphamap_unit)) logger.info("Loading dust map ...") self.dustmap = sky.load(self.dustmap_path) - # TODO: Validate & convert unit + # Validate input map unit if self.dustmap_unit != au.Unit("MJy / sr"): raise ValueError("unsupported dust map unit: {0}".format( self.dustmap_unit)) def _correct_dust_absorption(self): """ - Correct the H{\alpha} map for dust absorption using the - 100-{\mu}m dust map. + Correct the Hα map for dust absorption using the + 100-μm dust map. - References: [Dickinson2003]: Eq.(1, 3); Sec.(2.5) + References: Ref.[dickinson2003],Eq.(1,3),Sec.(2.5) """ if hasattr(self, "_dust_corrected") and self._dust_corrected: return @@ -271,9 +271,9 @@ class FreeFree: # Assumed electron temperature [ K ] T4 = self.Te / 1e4 nu = frequency * self.freq_unit.to(au.GHz) # frequency [ GHz ] - # NOTE: ignored the "10^3" term in the referred equation - ratio_mK_R = (8.396 * ratio_a * nu**(-2.1) * factor_a = self._calc_factor_a(frequency) + # NOTE: + # The referred formula has a superfluous "10^3" term. ratio_mK_R = (8.396 * factor_a * nu**(-2.1) * T4**0.667 * 10**(0.029/T4) * (1+0.08)) # Use "Kelvin" as the brightness temperature unit |