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huibintemaprojects [2016/09/02 21:30] – created huibintemahuibintemaprojects [2019/11/03 13:36] (current) – [T-RaMiSu: the Two-meter Radio Mini Survey] huibintema
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-====== Projects ======+~~NOTOC~~ 
 + 
 +====== Project archive ======
  
 ----- -----
  
-===== Current projects =====+==== T-RaMiSu: the Two-meter Radio Mini Survey ====
  
------+With Wendy Williams (Leiden) and Huub Rottgering (Leiden)\\ 
 +Bootes mosaic published as [[http://adsabs.harvard.edu/abs/2013A%26A...549A..55W|Williams et al. (2013)]] \\ 
 +[[http://vizier.cfa.harvard.edu/viz-bin/VizieR?-source=J/A+A/549/A55|Bootes radio source catalog via VizieR]] \\ 
 +[[ftp://ftp.strw.leidenuniv.nl/pub/intema/homepage/BOOTES.MOSAIC.FITS|Radio image of the Bootes field mosaic]] (FITS; 162 Mb) \\ 
 +[[ftp://ftp.strw.leidenuniv.nl/pub/intema/homepage/A2256.MOSAIC.FITS|Preliminary radio image of the Abell 2256 field mosaic]] (FITS; 34 Mb) \\
  
 +We used the GMRT at 150 MHz (2-meter wavelength) to observe two 30 square degree fields in the northern hemisphere, centered on the Bootes field and Abell 2256, respectively. Once intended to be complementary to WSRT LFFE observations, we analyzed and published these 7-pointing mosaics independently. The 2500+ detected radio sources provide a statistically significant set for studying the radio source population at a frequency relevant to the search for radio signals from the Epoch-of-Reionization (EoR). The fields also provide a reference for upcoming wide-field, low-frequency observatories like LOFAR and LWA. 
  
-===== Project archive ===== 
  
 ----- -----
  
-=== Deep low-frequency radio observations of the NOAO Bootes field ===+==== Deep low-frequency radio observations of the NOAO Bootes field ====
  
 With Reinout van Weeren (Leiden), Huub Rottgering (Leiden) and Dharam Vir Lal (MPIfR Bonn) \\ With Reinout van Weeren (Leiden), Huub Rottgering (Leiden) and Dharam Vir Lal (MPIfR Bonn) \\
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-=== Large Scale Structure at z = 4: Lyman Break Galaxies in a wide field around Radio Galaxy TN J1338-1942 ===+==== Large Scale Structure at z = 4: Lyman Break Galaxies in a wide field around Radio Galaxy TN J1338-1942 ====
  
 With Bram Venemans (Leiden), Jaron Kurk (Leiden/Florence), and Huub Röttgering (Leiden) \\ With Bram Venemans (Leiden), Jaron Kurk (Leiden/Florence), and Huub Röttgering (Leiden) \\
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-=== Hydrodynamical Modeling of Spherical Gravitational Collapse ===+==== Hydrodynamical Modeling of Spherical Gravitational Collapse ====
  
 With Garrelt Mellema (Leiden) and Erik-Jan Rijkhorst (Leiden) \\ With Garrelt Mellema (Leiden) and Erik-Jan Rijkhorst (Leiden) \\
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 For this project, I applied a hydrodynamical model developed by [[http://adsabs.harvard.edu/abs/1995A%26AS..110..587E|Eulderink & Mellema (1995)]], an extension of the model by [[http://adsabs.harvard.edu/abs/1986AnRFM..18..337R|Roe (1986)]], to numerically simulate the gravitational collapse of a spherical cloud of gas. By assuming initial spherical symmetry without rotation, magnetic fields, chemical reactions or radiation pressure, the collapse can be simulated in a relatively simple manner with only one spatial dimension, namely the radial distance. This reduces the needed computational power in such a way that the model can be easily run on a single PC. For this project, I applied a hydrodynamical model developed by [[http://adsabs.harvard.edu/abs/1995A%26AS..110..587E|Eulderink & Mellema (1995)]], an extension of the model by [[http://adsabs.harvard.edu/abs/1986AnRFM..18..337R|Roe (1986)]], to numerically simulate the gravitational collapse of a spherical cloud of gas. By assuming initial spherical symmetry without rotation, magnetic fields, chemical reactions or radiation pressure, the collapse can be simulated in a relatively simple manner with only one spatial dimension, namely the radial distance. This reduces the needed computational power in such a way that the model can be easily run on a single PC.
 Although it seems that, in view of modern development of 3-dimensional hydrodynamic codes with adaptive mesh refinement (AMR), that 1-dimensional modeling is a trip back into history, there was still some relevance to this project. One of the most important motivations was the actual implementation of the hydrodynamical model by Eulderink & Mellema for gravitational collapse as a test case. Although it seems that, in view of modern development of 3-dimensional hydrodynamic codes with adaptive mesh refinement (AMR), that 1-dimensional modeling is a trip back into history, there was still some relevance to this project. One of the most important motivations was the actual implementation of the hydrodynamical model by Eulderink & Mellema for gravitational collapse as a test case.
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huibintemaprojects.1472844652.txt.gz · Last modified: 2016/09/02 21:31 (external edit)

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