|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
smaller clumps of colder gas
A cosmic web filament revealed in Lyman-alpha
emission around a luminous high-redshift quasar http://arxiv.org/abs/1401.4469 This work indicates unknown contribution of smaller and colder clumps of gas fluorescently illuminated by a background intense quasar flashlight represented by lyman alpha spectral characteristic. How cold and how small, that is the question? Richard D Saam |
#2
|
|||
|
|||
smaller clumps of colder gas
On Friday, January 31, 2014 4:33:31 PM UTC-5, Richard D. Saam wrote:
A cosmic web filament revealed in Lyman-alpha emission around a luminous high-redshift quasar ..... How cold and how small, that is the question? Why not read the paper? physical size ~460 kpc and T 5 x 10^4 K CM |
#3
|
|||
|
|||
smaller clumps of colder gas
On 2/1/14, 2:36 AM, wrote:
On Friday, January 31, 2014 4:33:31 PM UTC-5, Richard D. Saam wrote: A cosmic web filament revealed in Lyman-alpha emission around a luminous high-redshift quasar .... How cold and how small, that is the question? Why not read the paper? physical size ~460 kpc and T 5 x 10^4 K CM Yes, read the paper: http://arxiv.org/abs/1401.4469 Issue one "Resolving a large population of small, cold gas clumps within the low-density IGM that are illuminated and ionized by the intense radiation of the quasar at scales below a few kpc." Issue two "Some other physical process that is not fully captured by current grid-based simulations increases the fraction of cold gas around the quasar" "Proper modeling of this gas phase will likely require a new generation of numerical models that are able - simultaneously - to spatially resolve these small IGM clumps within large simulation boxes, treat the multiphase nature of this gas and its interaction with galaxies and quasars." How cold and how small, that is the question? RDS |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
making it colder | Mdmeenken | Misc | 1 | October 18th 07 03:29 AM |
Pluto colder than expected at -382 F | G=EMC^2 Glazier | Misc | 6 | January 12th 06 09:39 PM |
Pluto Is Colder Than It Should Be | [email protected] | Astronomy Misc | 0 | January 3rd 06 05:01 PM |
Pluto Is Colder Than It Should Be | [email protected] | News | 0 | January 3rd 06 05:00 PM |