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( April 7 th –11 th 2014)

( April 7 th –11 th 2014). April 7 th -11 th , 2014.

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( April 7 th –11 th 2014)

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  1. ( April 7th–11th 2014) April 7th-11th, 2014

  2. WELCOME!And many thanks for having accepted our invitationto take part in the Workshop.Particular thanks to our visitors from abroad:Pr Di Li from National Astronomical Observatories of China(Revealing dark gas)Pr Kazuhiro Sekiguchi fromNat. Astronomical Obs. of Japan(Research at NAOJ)Pr Thibaut Le Bertre from Paris Observatory(Radio observation of extended circumstellar envelopes of AGB stars)Pr Young Chol Minh from Korean Astronomy and Space Institute(Radio astronomy in South Korea & Molecular gas associated with the circumnuclear disk of our galactic centre)

  3. Many thanks also to the Vietnamese participants, who cover quite well all what exists in astrophysics research in the countryPham Anh Tuan, from the Vietnam National Satellite Centre(Viet Nam Space Program)Dao Tien Khoa, from INST Ha Noi(Research in Nuclear Astrophysics)Dinh Van Trung, from IOP Ha Noi(Clumpy environment of Supergiant stars as traced by molecular emission)Phan Bao Ngoc, from HCMCUS International University(Brown Dwarfs)Nguyen Quynh Lan (HUE), Cao Anh Tuan (HCMCUE), Le Minh Tan (Tay Nguyen U)Pham Tuyet Nhung, Pham Ngoc Diep, Nguyen Thi Phuong, Pham Tuan Anh and Do Thi Hoai, VATLY/INST staff

  4. The main purpose of the Workshop is to exchange information on ongoing and future research projectsand to foster closer contactsand possible future collaborations.Support to fundamental research in Viet Nam is very low, in particular in domains at the frontier of knowledge such as particle physics and astrophysics, where there exists no tradition nor culture.The success of our research relies on the collaboration with astrophysicists from abroad (Taiwan, France) who have easier access to international observatories.

  5. WELCOME TO VATLY April-May, 2013

  6. A few words about VATLYVATLY (Vietnam Training Auger LaboratorY, means “physics” in Vietnamese) was created thirteen years ago in association with the International Pierre Auger Observatory in Argentina, which studies the high energy end of the cosmic ray spectrum.After successful collaboration and contribution to the PAO research, motivated by physics arguments on the time scale and promises of such research as well as by practical local considerations, we decided to switch to astrophysics, specifically to radio astronomy.This was in some respect a courageous move to the extent that we were leaving a field where we were well known on the international scene for a field where we are newcomers.

  7. We were encouraged on this road by Pr Nguyen Quang Rieu and we enjoy moral and material support from astrophysicists both in France and in IAU, whom we express here our deepest gratitude. The choice of radio astronomy as a particular branch of astrophysics was dictated by a combination of physics motivations (its presence at the forefront of most current explorations on the frontier of modern astrophysics) as well as by arguments of convenience (influence of NQ Rieu, existence of DV Trung and PB Ngoc, near impossibility to make observations in the visible under the foggy tropical sky). VATLY now means Vietnam Astrophysics Trainig LaboratorY

  8. Our current main contributions to research cover a study of the host galaxy of a z=3 QSO and that of the circumstellar envelope of an AGB star, both in the context of joint PhD supervision agreements (4 months abroad/yr). At home, we operate a 2.6 m diameter telescope tuned on the 21cm line. We shall report on such research at the Workshop. We are looking forward to an expansion of its scope. We contribute to the teaching of astrophysics at HUS, HUE and USTH and do our utmost to attend conferences and schools, in particular in the region, as well as contributing to public outreach and to the promotion of astrophysics in the country.

  9. Undergraduate dissertations Study of the effect of atmospheric pressure on cosmic muon rate in Ha Noi Study of the effect of temperature on cosmic muon rate in Ha Noi Measurement of the muon life time Un modèle simple du développement longitudinal des gerbes électromagnétiques The black hole in the centre of the Milky Way Optical properties of a Cherenkov counter Huong 2008 Galaxy collisions as possible sources of ultra high energy cosmic rays Extensive air showers and LPM effect X ray binaries and three body capture Réchauffement climatique et rayons cosmiques Gravitational lensing and Einstein rings Construction, operation and exploitation of a scintillator hodoscope Diep 2003 Lion 2009 Nhung 2003 Hoai 2009 Huyen 2005 Hiep 2010 V.Phuong 2006 Dung 2011 K.Phuong 2006 Phuong 2013 The 2007

  10. Master theses (+ Phuong in the mill) Measurement of the east-west asymmetry of the cosmic muon flux in Ha Noi Performance study of water Cherenkov counters The Cherenkov counters of the VATLY laboratory Detection and study of ultra-high energy cosmic rays An original approach to the simulation of the development of extensive air showers up to extreme high energies Duong 2003 Thao 2007 The detection of extensive air showers in Ha Noi Radio detection of the Sun Diffusive shock acceleration in SNR shocks Observation of the 21cm sky using the VATLY radiotelescope Nhung 2006 T. Anh 2010 Dong 2006 The 2010 Diep 2006 Hiep2012 Hoai 2012

  11. PhD Theses (+Tuan Anh and Hoai in the mill) Measurement of the angular distribution of the cosmic muon flux in Ha Noi Contribution à l’étude des grandes gerbes à l’aide du détecteur de surface de l’Observatoire Pierre Auger Contribution à l’étude de la réponse aux photons Cherenkov d’un tube photomultiplicateur de grand diamètre et de son utilisation à l’Observatoire Pierre Auger Contribution à l’identification de la nature des rayons cosmiques d’énergie extrème à l’Observatoire Pierre Auger The VATLY Cherenkov detector and its response to electrons and muons Thieu 2006 Nhung 2009 Dong 2010 Diep 2010 Thao 2014

  12. ProgrammePower point presentations will be available on the VATLY sitehttp://www.inst.gov.vn/Vatly/Hanoiworkshop2014.htm

  13. We shall do our best for you to enjoy your stay with us. Do not hesitate to ask for assistance with any problem that you might meet: we shall do our utmost to solve it.We acknowledge significant help from IAU (financial support) and INST (logistic support) with the organization of the Workshop.

  14. THANK YOU FOR YOUR ATTENTION

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