Questions related to Interstellar Medium
There are several papers which are using following formula (as shown in the picture) to calculate the dust mass (Md) of the dusty environments such as Nebula, loops etc in the ISM. The expression for dust mass shows that it depends on grain size, grain density and grain emissivity, here, for IRAS Survey, grain size = 0.1 micron, density = 1000 kg/m3 and emissivity = 0.0010 for 100 micron, respectively, are used. Are these constants same for AKARI and WISE survey too? OR, are there any other methods for the dust mass calculation using AKARI and WISE data? I would be very much happy to get your valuable suggestions. Thank you :)
I want to know how the composition of The Galactic Cosmic Rays in Interstellar Medium would be affected as the Universe evolves and its metalicity changes. The amount of heavy metals must increase and so I am looking for quantitative values for it.
I am working an a project which requires me to know the exact total amount of GCR flux between 10MeV to 1GeV. There are many papers on GCR flux but they only talk about flux at some specific energy but not the total flux of GCR.
I am working on the Ethanimine formation in the Interstellar medium by reaction CH2+CH2NH---->CH3CHNH. CH2 is taken in both singlet and triplet form. when I add water molecule in reaction complex for simulation of ice. sometimes I get transition state which has lower energy than reaction complex(RC). I want to know the physical meaning of that kind of transition state and how to find rate coefficient for these reactions.
One more question , is "Hammond–Leffler postulate" is applicable in Interstellar medium? Can I use it to verify my TS structure is correct or not?
Is there a technical reason for not taking the data or the lack of data is due to the lack of interest in the information it might contain?
If you want to study dust disks around nearby stars, there is data from Herschel and Alma in infrared and radio range that enables spectroscopic studies of molecular transitions but there is no data taken at shorter wavelengths to study other kinds of processes. Why is that?