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cloudy-astrophysics / bug-tracker-migration-test

Trial run for importing the nublado.org Trac tickets as GitHub issues
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funny features in predicted SED (trac #197) #199

Open cloudy-bot opened 13 years ago

cloudy-bot commented 13 years ago

reported by: @CloudyLex

the attached pdf shows the incident wmbasic SED, and the predicted total emission, for a hot wind around a star. The input script is also attached. This was run with r4683 gcc/mac.

a few curiosities in this plot;

the wmbasic incident SED stops at 1e-5 eV. This is not the plasma frequency (that is near 1e-6 eV). Why don't we extrapolate the stellar SED to the low-energy end of the continuum using a Rayleigh-Jeans slope?

There is a discontinuous derivative in the stellar SED at about 1e-2 eV.

The feature that really grabs the eye, and must be bogus, is the large "absorption line" in the total emission at about 1e-6 eV. This is near the plasma frequency and may be some sort of off by one error.

The radio / FIR is optically thick to brems, which may account for the changes in slope between 1e-6 and ~1e-4 eV.

Migrated from https://www.nublado.org/ticket/197

{
    "status": "new",
    "changetime": "2019-02-04T12:10:21Z",
    "_ts": "1549282221449479",
    "description": "the attached pdf shows the incident wmbasic SED, and the predicted total emission, for a hot wind around a star.  The input script is also attached.  This was run with r4683 gcc/mac. \n\na few curiosities in this plot;\n\nthe wmbasic incident SED stops at 1e-5 eV.  This is not the plasma frequency (that is near 1e-6 eV).  Why don't we extrapolate the stellar SED to the low-energy end of the continuum using a Rayleigh-Jeans slope?\n\nThere is a discontinuous derivative in the stellar SED at about 1e-2 eV.  \n\nThe feature that really grabs the eye, and must be bogus, is the large \"absorption line\" in the total emission at about 1e-6 eV.  This is near the plasma frequency and may be some sort of off by one error.  \n\nThe radio / FIR is optically thick to brems, which may account for the changes in slope between 1e-6 and ~1e-4 eV.",
    "reporter": "gary",
    "cc": "",
    "resolution": "",
    "time": "2011-02-20T15:01:14Z",
    "component": "radiative transfer",
    "summary": "funny features in predicted SED",
    "priority": "major",
    "keywords": "",
    "version": "trunk",
    "milestone": "c19 branch",
    "owner": "nobody",
    "type": "defect - etc"
}
cloudy-bot commented 13 years ago

Attachment: SED_funny.pdf

cloudy-bot commented 13 years ago

Attachment: xray2.in

cloudy-bot commented 13 years ago

@CloudyLex changed summary from "funny features in predicted SEC" to "funny features in predicted SED"

cloudy-bot commented 13 years ago

@peter-van-hoof-noaccount changed milestone from "C13 branch" to "C19_branch"

cloudy-bot commented 13 years ago

Milestone renamed