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huibintema [2019/09/06 04:34]
huibintema [Huib Intema]
huibintema [2020/11/19 15:11] (current)
huibintema [Huib Intema]
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 {{htmlmetatags>​metatag-keywords=(keywords>​astronomy,​radio,​interferometry,​galaxy,​galaxies,​agn,​gmrt,​giant,​metrewave,​telescope,​tgss,​adr,​lofar,​mwa,​ska,​ncra,​nrao,​astron,​leiden,​oxford,​india,​huib,​intema,​150,​MHz,​megahertz,​low,​frequency,​ionosphere,​spam,​sources,​catalogs,​aladin,​hips,​rms,​sensitivity,​mjy,​vo,​virtual,​observatory,​counts,​steep,​spectral,​index,​merging,​galaxy,​clusters,​haloes,​halos,​relics,​interactive,​data,​products,​antenna,​dish)}} {{htmlmetatags>​metatag-keywords=(keywords>​astronomy,​radio,​interferometry,​galaxy,​galaxies,​agn,​gmrt,​giant,​metrewave,​telescope,​tgss,​adr,​lofar,​mwa,​ska,​ncra,​nrao,​astron,​leiden,​oxford,​india,​huib,​intema,​150,​MHz,​megahertz,​low,​frequency,​ionosphere,​spam,​sources,​catalogs,​aladin,​hips,​rms,​sensitivity,​mjy,​vo,​virtual,​observatory,​counts,​steep,​spectral,​index,​merging,​galaxy,​clusters,​haloes,​halos,​relics,​interactive,​data,​products,​antenna,​dish)}}
  
-[[https://staffportal.curtin.edu.au/staff/profile/view/​Huib.Intema|{{ :​huib_intema_-_sterrewacht_-_cutout.jpg?​nolink&​150|Huib Intema}}]]+[[https://www.universiteitleiden.nl/en/staffmembers/huib-intema|{{ :​huib_intema_-_sterrewacht_-_cutout.jpg?​nolink&​150|Huib Intema}}]]
 ====== Huib Intema ====== ====== Huib Intema ======
  
-Dr. Ing. Hubertus T. Intema \\ +Dr. ing. Hubertus T. Intema \\ 
-Senior Research Fellow ​at the Curtin Institute of Radio Astronomy \\ +IT support scientist & radio astronomer ​at Leiden Observatory\\
-Affiliated with Leiden Observatory\\+
 \\ \\
 /* [[https://​www.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=263|Contact Info]]\\ */ /* [[https://​www.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=263|Contact Info]]\\ */
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 [[huibintemalinks|Useful links]] [[huibintemalinks|Useful links]]
  
-[[huib.intema@curtin.edu.au|{{:​email.jpg?​nolink|E-mail}}]] [[https://​www.facebook.com/​huib.intema|{{:​facebook.jpg?​nolink|Facebook}}]] [[https://​nl.linkedin.com/​in/​huib-intema-9b43861b|{{:​linkedin.jpg?​nolink|LinkedIn}}]] [[skype>​huib.intema|{{:​skype.jpg?​nolink|Skype}}]] [[https://​twitter.com/​HuibIntema|{{:​twitter.jpg?​nolink|Twitter}}]]+[[intema@strw.leidenuniv.nl|{{:​email.jpg?​nolink|E-mail}}]] [[https://​www.facebook.com/​huib.intema|{{:​facebook.jpg?​nolink|Facebook}}]] [[https://​nl.linkedin.com/​in/​huib-intema-9b43861b|{{:​linkedin.jpg?​nolink|LinkedIn}}]] [[skype>​huib.intema|{{:​skype.jpg?​nolink|Skype}}]] [[https://​twitter.com/​HuibIntema|{{:​twitter.jpg?​nolink|Twitter}}]]
  
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 {{ :​019-gmrt-_pune.jpg?​nolink&​275|The GMRT radio interferometer in India consists of 30 dish-based antennas, each 45 meters in diameter, spread out over an area of about 25 km wide.}} {{ :​019-gmrt-_pune.jpg?​nolink&​275|The GMRT radio interferometer in India consists of 30 dish-based antennas, each 45 meters in diameter, spread out over an area of about 25 km wide.}}
-I am a radio astronomer working at the Curtin Institute of Radio Astronomy ​([[http://astronomy.curtin.edu.au|CIRA]]), part of [[http://www.curtin.edu.au|Curtin ​University]] in Perth, Australia. My area of expertise is low-frequency [[https://​en.wikipedia.org/​wiki/​Astronomical_interferometer|radio interferometry]],​ studying the Universe at radio frequencies below 1 [[https://​en.wikipedia.org/​wiki/​Hertz|GHz]] with telescopes like the Murchison Widefield Array ([[http://www.mwatelescope.org|MWA]]), the Low-Frequency Array ([[http://​www.lofar.org|LOFAR]])the Very Large Array ([[http://vla.nrao.edu|VLA]]) and the Giant Metrewave Radio Telescope ([[http://gmrt.ncra.tifr.res.in|GMRT]]). These are technically challenging observations to process, complicated by the need to image and deconvolve hundreds of sources in a typical Field Of View ([[https://​en.wikipedia.org/​wiki/​Field_of_view|FOV]]) of many degrees in diameter, the abundant presence of man-made Radio-Frequency Interference ([[https://​en.wikipedia.org/​wiki/​Electromagnetic_interference|RFI]]),​ and the distorting effects of the Earth'​s [[https://​en.wikipedia.org/​wiki/​Ionosphere|ionosphere]]. Over the course of several years, I have build and refined a set of software tools to process these observations in an efficient and reproducible way, typically yielding high-quality images. These tools are now systematically applied in many different science projects involving low-frequency radio interferometric observations.+I am a radio astronomer ​and IT support scientist ​working at ([[https://www.universiteitleiden.nl/​en/​science/​astronomy|Leiden Observatory]]), the astronomical research institute ​of [[https://www.universiteitleiden.nl/en|Leiden ​University]] in the Netherlands. My area of expertise is low-frequency [[https://​en.wikipedia.org/​wiki/​Astronomical_interferometer|radio interferometry]],​ studying the Universe at radio frequencies below 1 [[https://​en.wikipedia.org/​wiki/​Hertz|GHz]] with telescopes like the Giant Metrewave Radio Telescope ​([[http://gmrt.ncra.tifr.res.in|GMRT]]) and the Very Large Array ([[https://public.nrao.edu/telescopes/​vla/|VLA]]). These are technically challenging observations to process, complicated by the need to image and deconvolve hundreds of sources in a typical Field Of View ([[https://​en.wikipedia.org/​wiki/​Field_of_view|FOV]]) of many degrees in diameter, the abundant presence of man-made Radio-Frequency Interference ([[https://​en.wikipedia.org/​wiki/​Electromagnetic_interference|RFI]]),​ and the distorting effects of the Earth'​s [[https://​en.wikipedia.org/​wiki/​Ionosphere|ionosphere]]. Over the course of several years, I have build and refined a set of software tools to process these observations in an efficient and reproducible way, typically yielding high-quality images. These tools are now systematically applied in many different science projects involving low-frequency radio interferometric observations.
  
 {{ :​plckg287.png?​nolink&​250|PLCK G287.0+32.9 is a galaxy cluster for which the clumped galaxy distribution (optical in white) and disturbed hot intra-cluster gas (X-rays in red; radio in blue) indicates that this system underwent a recent major merger. From Bonafede, Intema et al. (2014)}} {{ :​plckg287.png?​nolink&​250|PLCK G287.0+32.9 is a galaxy cluster for which the clumped galaxy distribution (optical in white) and disturbed hot intra-cluster gas (X-rays in red; radio in blue) indicates that this system underwent a recent major merger. From Bonafede, Intema et al. (2014)}}
-My primary astronomical ​goal is to understand the origin of large-scale diffuse radio emission regions in [[https://​en.wikipedia.org/​wiki/​Observable_universe#​Large-scale_structure|clusters of galaxies]], namely [[https://​en.wikipedia.org/​wiki/​Radio_halo|radio halos]], [[https://​en.wikipedia.org/​wiki/​Radio_relics|radio relics]], and radio phoenices. Their emission extends over areas of tens to hundreds of kilo-[[https://​en.wikipedia.org/​wiki/​Parsec|parsecs]] – often a Mega-parsec or more – and appears to be unrelated to any individual galaxy in the cluster. Only a fraction of the known clusters harbors this kind of emission, but all of these show signs of recent merging activity. This strongly suggests that the energy required to generate these emission regions comes from the potential energy released in the merger, but the exact physical mechanisms are still debated. Understanding these mechanisms is part of the puzzle in understanding how the largest gravitationally bound structures in the Universe form and evolve+My primary astronomical ​interest ​is to understand the origin of large-scale diffuse radio emission regions in [[https://​en.wikipedia.org/​wiki/​Observable_universe#​Large-scale_structure|clusters of galaxies]], namely [[https://​en.wikipedia.org/​wiki/​Radio_halo|radio halos]], [[https://​en.wikipedia.org/​wiki/​Radio_relics|radio relics]], and radio phoenices. Their emission extends over areas of tens to hundreds of kilo-[[https://​en.wikipedia.org/​wiki/​Parsec|parsecs]] – often a Mega-parsec or more – and appears to be unrelated to any individual galaxy in the cluster. Only a fraction of the known clusters harbors this kind of emission, but all of these show signs of recent merging activity. This strongly suggests that the energy required to generate these emission regions comes from the potential energy released in the merger, but the exact physical mechanisms are still debated. Understanding these mechanisms is part of the puzzle in understanding how the largest gravitationally bound structures in the Universe form and evolve.
- +
-I have recently joined CIRA as a Senior Research Fellow. My main focus is to improve data processing for the MWA and the future SKA_LOW, and mining the data of these and other low-frequency telescopes for a range of different astrophysics. I will also continue some of my activities at Leiden Observatory,​ being part of the LOFAR Surveys Key Science Project ([[http://​lofar.strw.leidenuniv.nl/​doku.php|LSKSP]]),​ aimed at radio imaging the Northern hemisphere at unprecedented resolution and sensitivity using both the High-Band Antennas (HBA; 120-240 MHz) and Low-Band Antennas (LBA; 30-80 MHz).+
  
 +In my current role at Leiden Observatory I provide IT support for researchers and groups such as the ALMA Local Expertise Group ([[https://​www.alma-allegro.nl/​|Allegro]]). I also continue some of my activities at Leiden Observatory,​ being part of the LOFAR Surveys Key Science Project ([[http://​lofar.strw.leidenuniv.nl/​doku.php|LSKSP]]),​ aimed at radio imaging the Northern hemisphere at unprecedented resolution and sensitivity using both the High-Band Antennas (HBA; 120-240 MHz) and Low-Band Antennas (LBA; 30-80 MHz).
  
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 ===== Education and Experience ===== ===== Education and Experience =====
  
-2019 – .... | Senior research fellow, Curtin Institute of Radio Astronomy |+2020 – .... | IT support scientist & radio astronomer, Leiden Observatory | 
 +| 2019 – 2019 | Senior research fellow, Curtin Institute of Radio Astronomy |
 | 2015 – 2018 | LOFAR/SKA research scientist, Leiden Observatory | | 2015 – 2018 | LOFAR/SKA research scientist, Leiden Observatory |
 | 2012 – 2015 | VLA research associate, NRAO Socorro | | 2012 – 2015 | VLA research associate, NRAO Socorro |
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   * [[huibintemaspam|SPAM]]:​ automated processing of GMRT observations (including direction-dependent calibration)   * [[huibintemaspam|SPAM]]:​ automated processing of GMRT observations (including direction-dependent calibration)
   * C-SPAM: implementation of SPAM in CASA for processing wide-bandwidth uGMRT and JVLA-lowband observations (with de Gasperin)   * C-SPAM: implementation of SPAM in CASA for processing wide-bandwidth uGMRT and JVLA-lowband observations (with de Gasperin)
-  * GMRT follow-up of SZ-selected clusters from the ACT and SPT (with Knowles, Moodley, van Weeren, Datta, Paul) 
-  * Pulsar and transient searches using TGSS and other catalogs (with Frail, Mooley, van der Horst, Murphy, Kaplan) 
-  * Ultra-steep spectrum radio halo and relic searches using TGSS (with de Gasperin, Mandal) 
-  * HzRG searches using TGSS (with Saxena, Duncan, de Gasperin) 
-  * GMRT 610 MHz imaging of the XXL-North field (with Smolcic, Horellou, Raychaudhury) 
-  * GMRT imaging of the ATLAS survey fields ELAIS-S1 (with Norris) 
-  * GMRT Archive Processing Project (GAPP) (with Wadadekar, Ishwara-Chandra) 
   * ... and others   * ... and others
  
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 // Current // \\ // Current // \\
-  * [[https://​www.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=1660|Soumyajit Mandal]]: PhD candidate mainly working on LOFAR HBA observations of the Lockman hole (extremely deep survey) and Abell 1914 (merging galaxy cluster). +  * Soumyajit Mandal: PhD candidate mainly working on LOFAR HBA observations of the Lockman hole (extremely deep survey) and Abell 1914 (merging galaxy cluster). 
-  * [[https://​www.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=1534|Joshua Albert]]: PhD candidate mainly working on LOFAR HBA observations of the GOODS-North field (survey), and on techniques to improve ionospheric calibration and radio spectral index mapping. +
-  * [[https://​www.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=3525|Alexandar Mechev]]: PhD candidate mainly working on optimization of the processing pipeline for the LOFAR HBA survey, and porting to distributed computer platforms.+
  
 // Previous // \\ // Previous // \\
-  * [[https://local.strw.leidenuniv.nl/​people/​touchscreen2/​pers.php?​id=4335|Susie Tuntipong]]: MSc candidate working on wide-band radio imaging of NGC253 using uGMRT to identify HII regions (with Oonk and Tielens). +  * Joshua AlbertPhD candidate mainly working on LOFAR HBA observations of the GOODS-North field (survey), and on techniques to improve ionospheric calibration and radio spectral index mapping. 
-  * [[https://​local.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=1410|Vivienne Kolman]]: MSc candidate working on a high-resolution radio survey of part of the Galactic plane to search for missing SNRs (with de Gasperin). +  * Alexandar Mechev: PhD candidate mainly working on optimization of the processing pipeline for the LOFAR HBA survey, and porting to distributed computer platforms. 
-  * [[https://​www.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=1265|Martijn Oei]]: MSc candidate working on wide-band calibration for uGMRT and studying the properties of radio galaxies as a function of environment in the GAMA fields (with de Gasperin). +  * Susie Tuntipong: MSc candidate working on wide-band radio imaging of NGC253 using uGMRT to identify HII regions (with Oonk and Tielens). 
-  * [[https://​www.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=1437|Dieuwertje van der Vlugt]]:  MSc candidate working on JVLA L-band (1-2 GHz) intensity and polarization maps of double radio relic galaxy cluster PSZ1 G108.18-11.53 (with de Gasperin). +  * Vivienne Kolman: MSc candidate working on a high-resolution radio survey of part of the Galactic plane to search for missing SNRs (with de Gasperin). 
-  * [[https://​www.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=3849|Gabriella Di Gennaro]]: LEAPS summer student working on JVLA P-band (240-480 MHz) intensity maps of M87 / Virgo A  (with de Gasperin). +  * Martijn Oei: MSc candidate working on wide-band calibration for uGMRT and studying the properties of radio galaxies as a function of environment in the GAMA fields (with de Gasperin). 
-  * [[https://​local.strw.leidenuniv.nl/​people/​touchscreen2/​persinline.php?​id=1007|Kasper van Dam]]: MSc candidate working on implementing wide-bandwidth SPAM ionospheric calibration using CASA (with de Gasperin).+  * Dieuwertje van der Vlugt: ​ MSc candidate working on JVLA L-band (1-2 GHz) intensity and polarization maps of double radio relic galaxy cluster PSZ1 G108.18-11.53 (with de Gasperin). 
 +  * Gabriella Di Gennaro: LEAPS summer student working on JVLA P-band (240-480 MHz) intensity maps of M87 / Virgo A  (with de Gasperin). 
 +  * Kasper van Dam: MSc candidate working on implementing wide-bandwidth SPAM ionospheric calibration using CASA (with de Gasperin).
  
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huibintema.1567737240.txt.gz · Last modified: 2019/09/06 04:34 by huibintema