Netherlands Institute for Radio Astronomy
Martin Bell -
I am Ph.D. student at the University of Southampton under the supervision of
Prof. Rob Fender. I have been working at Astron with Prof. Ger de Bruyn on the
search for highly dispersed, single event, transient radio bursts (Lorimer et al
2007) in archival low frequency Westorbork data. The motivation behind this
project is to find new single-epoch high-energy burst events.
The Westerbork Low Frequency Front Ends lend themselves nicely to the task of
searching for new pulses as they offer large bandwidth and good field of view.
At the frequency regime at which they operate a new burst should be
prominent enough to detect. My work has been to first learn how to calibrate
and image WSRT data and then code a pipeline strategy for detection of
pulses. I have also been involved in reducing follow-up 6 and 21cm WSRT data
of an interesting transient event discovered in a low-frequency VLBI survey. I
have gained a lot of knowledge from the experienced and helpful staff at
Astron, especially my supervisor. I have thoroughly enjoyed my time at Astron
and I would recommend the experience whole heartedly.
Ana Nicuesa -
I come from Spain and this is the first year of my Ph.D. at the University of
Vienna. This summer, I have been working with Raffaella Morganti and Eva
Manthey on reducing HI synthesis observations of the Leo-ring taken with the
Westerbork Synthesis Radio Telescope. A large intergalactic HI cloud in the
Leo region was found by Schneider et al. (1983) and was called the
Leo-ring. It is a very puzzling object. The most interesting part of this work has been
trying to establish what the origin of this huge cloud is (it has the same
mass of a dwarf galaxy!).
Apart from astronomy, Drenthe (the province where Astron is placed) is really
nice. I enjoyed the opportunity to visit a different country for a longer time
than a few days and be able to touch the real life of people. I can only
say thank you for everything.
Parisa Noorishad -
I’m originally Iranian and have just finished my M.Sc. in radio
astronomy and space science at Chalmers, in Sweden. I will soon start my Ph.D. at the Groningen
University, focusing on calibration and imaging techniques with phased
arrays and particularly the EMBRACE demonstrator.
During my summer studentship I worked on a feasibility study of SETI with
LOFAR, under the supervision of Mike Garrett. Here I would like to thank
everybody at ASTRON and JIVE for the friendly and warm
atmosphere they created and for welcoming us with many different activities.
Alfonso Trejo Cruz -
Hola, I come from Mexico and I'm doing my Ph.D. in
astronomy at the Universidad Nacional Autonoma de Mexico. My Ph.D. thesis
focuses on the study of non-thermal radio sources in the Galactic Plane.
I'm working under the supervision of Dr. Luis F. Rodriguez.
During the summer program at JIVE I have been working with Dr. Zsolt
Paragi on two projects. One project is about the radio detection of a 2MASSX source, which was
identified as the counterpart of a hard X-ray source. This X-ray source can
also be related to a variable gamma-source. The goal of this project is to test the
compactness of the 2MASSX source using short e-VLBI observations. The results
show that the detected 2MASSX source is an eligible candidate for being the
counterpart of the variable gamma source.
The second project is about the detection of the radio counterpart of the
ultra-luminous X-ray source in the Triangulum galaxy (M33). We made short
e-VLBI observations during the summer. With VLBI we can test the compactness
of the source, which is important for sources related to black holes. In this
exploratory project we used both normal phase-referencing and multi-source
phase-referencing to calibrate the target.
The summer program is very good, and the ASTRON/JIVE staff is always willing
to help. I thank Dr. Paragi for all the help and good discussions about
interferometry with VLBI. It has been really nice to spend my summer in
ASTRON/JIVE and have a chance to visit the Netherlands.
Zhiyu Zhang -
Hello, I am a third-year MS. student from PMO (Purple Mountain
Observatory), China. I am very proud to have had the opportunity to study
interferometry and synthesis in radio astronomy here and work with the
best astronomers in the world.
At ASTRON, my supervisors were Tom Oosterloo and Paolo Serra. My project here
was to work on the 21cm HI data of an E/S0 galaxy, ESO
92-21, which was observed with ATCA (Australia Telescope
Compact Array), and make some model datacubes to fit the gas
kinematics. We also worked on getting its real rotation
curve and comparing it with the result from MOND (Modified
Newton Dynamics) models.
Dwingeloo is a very peaceful small town in the national forest park. Lectures,
ASTROFEST, a tour of WSRT and LOFAR, made us learn many new things and gave us
a good training on interferometry. It is really a wonderful experience,
enriched by the possibility of discussing about astronomy dutring talks, colloquiums, etc.
During the ten weeks in ASTRON & JIVE, I have led a very healthy and happy
life. Aside from astronomy, we have barbecue, bridge, football, softball,
travelling, wadloping, cycling, etc. All of us summer students shared this
happiness and friendship.
Finally, many thanks to the committee and my supervisors, I would have never
had this valuable and indelible experience without you.
P.S.: the guest house in ASTRON has a magic kitchen.