Visiting Professors

Fiscal Year 2017

Name Organization
Pipin, Valery Russian Acad. of Sciences
Brun, Sacha A. CEA Paris‐Saclay

Fiscal Year 2016

Name Organization
Rutten, Robert

Utrecht U.

Fiscal Year 2015

Name Organization
Gizon, Laurent MPS
Cheung, Mark C. M. LMSAL

Fiscal Year 2014

Name Organization
Uitenbroek, Han NSO
Kuhn, Jeff U. Hawaii

Fiscal Year 2013

Name Organization
Priest, Eric U. St. Andrews
Lites, Bruce HAO
Cameron, Robert MPS

Fiscal Year 2012

Name Nationality Organization Period Comments
Choudhuri, Arnab Rai India Indian Institute of Science 2012/05/24 - 2012/06/29 --
Judge, Philip U.S.A. High Altitude Observatory 2012/07/02 - 2012/08/28 --

Fiscal Year 2011

Name Nationality Organization Period Comments
Carlsson, Mats Norway U.Oslo 2011/05/30 - 2011/06/30 Comment
Berger, Thomas U.S.A. LMSAL 2011/09/05 - 2011/10/06 --
Rempel, Matthias U.S.A. High Altitude Observatory 2011/10/31 - 2011/11/30 Comment

Fiscal Year 2010

Name Nationality Organization Period Comments
Miesch, Mark U.S.A. High Altitude Observatory 2010/07/14 - 2010/08/13 --
Rutten, Robert Netherlands Utrecht University 2010/10/27 - 2010/11/27 Comment
Lin, Haosheng U.S.A. University of Hawaii 2010/11/09 - 2010/11/26 --
Lin, Haosheng U.S.A. University of Hawaii 2011/01/11 - 2011/01/28 Comment

Fiscal Year 2009

Name Nationality Organization Period Comments
Steiner, Oskar Germany Kiepenheuer-Institut fuer Sonnenphysik 2009/04/16 - 2009/06/01


Hansteen, Viggo Norway U. Oslo 2009/06/29 - 2009/08/05 --
Steiner, Oskar Germany Kiepenheuer-Institut fuer Sonnenphysik 2009/09/16 - 2009/10/31


Stenflo, Jan Olof Switzerland ETH 2009/11/02 - 2009/12/04


Fiscal Year 2008

Name Nationality Organization Period Comments
Schlichenmaier, Rolf Germany Kiepenheuer-Institut fuer Sonnenphysik 2008/04/14 - 2008/05/13 --
Rimmele, Thomas U.S.A. NSO 2008/06/04 - 2008/07/24 Comment
Lagg, Andreas Germany Max Planck Institut 2008/07/21 - 2008/10/20


Fiscal Year 2007

Name Nationality Organization Period Comments
Bellot Rubio, Luis R. Spain Instituto de Astrofisica de Andalucia 2007/07/04 - 2007/09/30 --
Kosovichev, Alexander G. U.S.A. U. Stanford 2007/10/21 - 2007/11/21


Comments from visiting professors

Carlsson, Mats (U.Oslo)

The stay was very well organized with good support for all practical matters. I believe the visiting professor program is very valuable in increasing the awareness of the science program at NAOJ as well as in complementing the expertise existing in Japan with supplementary expertise from overseas. I certainly benefitted much from the stay and also hope that I have been able to contribute a bit to the fruitful international collaborations that are so important for science, not the least space science. When I'm asked by other suggested andidates for the visiting professor program I have only positive comments.

Rempel, Matthias (High Altitude Observatory)

I'm very grateful for the opportunity to stay at NAOJ and to deepen my relation to the Japanese solar physics community. The future challenges in solar physics will require a much closer connection between observation and theory (in particular numerical forward modeling) than it has been the case in the past. My visit to the Hinode Science Center gave me a unique opportunity to learn more about the possibilities but also limitations of observations as well as future directions. I hope that at the same time my lectures gave some insight on the strength and weaknesses of numerical simulations of solar MHD. In addition to the lectures at NAOJ I also enjoyed my visits to the University of Tokyo and the additional time I could spend working with H. Hotta on one of his thesis projects.

Rutten, Robert (Utrecht University)

When I received Tsuneta-san's invitation to spend an extended period at NAOJ I initially had some hesitations: I had never been to Japan, the language barrier as well as big-crowded-city life seemed formidable obstacles, I had been involved in Hinode research only indirectly via collaborators, I had met only few NAOJ colleagues so far, and I had some misgivings concerning the non-university character of NAOJ, i.e. lack of students and the vitality they bring. So I consulted Dr. Oskar Steiner (Freiburg) who had been a recent visitor in the same program. His extremely positive reaction made me accept the invitation. If somebody in the same position would now consult me I would react as positively as Dr. Steiner did to me. My stay at NAOJ was both fruitful and enjoyable.
I found the extensive round of person-to-person science discussions that Suematsu-san set up for me very worthwhile, in not only learning a lot about Japanese solar physics but also in solar physics itself. My very intensive week of teaching a "refresher" course on solar line formation was a good experience for myself - I am going to do the same at Lockheed-Martin a month from now and will pattern it closely on the NAOJ example. The suggestion of its concentrated format came also from Dr. Steiner; I think it a good idea. The students that came from elsewhere indeed were a pleasant addition to those at NAOJ.

As to my qualms about language and living in Tokyo: I found staying in the Cosmos Kaikan apartment (with my wife who followed an internet course there on Japanese techniques in jewelry making) a great boon. I had not anticipated how much the NAOJ campus represents a green oasis in such a hectic city, how lively the lunches with colleagues in the cafeteria would be, and that our daily shopping could be done nearby per bicycle, as in a village. Thus, the daily life at NAOJ is a great asset. As a place to work, it is excellent with a very pleasant building, good facilities, and excellent support. For example, I participated in many nightly teleconferences (concerning an ESA proposal for Solar-C/B, see below) that wouldn't have been so easy to share in my own institute.

The conclusion on my side is that the visitor program is a very good idea and has a very good formula, and that NAOJ is a very attractive place to come to work there an extended period.

Lin, Haosheng (University of Hawaii)

First of all, I would like to say that I am honored to have this opportunity to visit NAOJ for an extended period of time and to collaborate with NAOJ scientists on the future Japanese space solar mission. I am also tremendously impressed by the science been done at the solar physics group of NAOJ. Japan has successfully launched three space solar missions, both of which yielded spectacular scientific achievements and greatly advanced our knowledge of the Sun. The contribution of the Japanese space solar physics program to the international solar physics community cannot be overstated.
Through the previous missions, NAOJ has established itself as the world leader in the design, construction, and operation of large aperture space solar telescope, and is continuing to push the frontier by setting the goal for a 1.5 m telescope for the SOLAR_C mission. This vision is to be commended. However, it is fair to say that international contributions, especially in instrumentation, are indispensible for the successes of the previous and current Japanese space solar mission. During my visit, I can certainly sense the desire of the Japanese scientists to establish an indigenous capability for space instrumentation. This is where I think I can offer some perspectives as an instrumentalist that hopefully will be useful for my Japanese colleagues in this pursue.

From what I can see I think NAOJ has tremendous potential to develop a world class solar instrumentation program within a short period of time. The Advanced Technology Center is a very valuable asset for this pursue. In comparison this is a luxury (institutional support of infrastructure and engineering staff) that many of us in the US --- even those in national centers --- don't have. However, the most important asset in this endeavor is of course human resource --- in particular individual that can think 'out of the box'. Because Instrumentation development is a risky business that most often requires long term commitment and yields little or no tangible result in the short term, an environment that encourages (or at least tolerates) risk taking and long term thinking should be established to foster a new generation of solar physicists dedicated to instrumentation development. While there is no doubt that long-term thinking is deeply ingrained in the Japanese culture, risk-taking is perhaps not the most notable of the Japanese characters --- if I may be candid in expressing my observations. Finally, I think the weakest link in this pursue in Japan is the absence of a strong ground-based instrumentation program. This is particular important for instrumentation in the optical and near-IR wavelength regime. Witness that the highly successful Spectropolarimeter (SP) on board Hinode was based on decades of ground based development effort. Therefore establishment of a ground-based facility for instrument development, either through collaboration with Japanese universities or foreign institution should be considered a priority.

I wish that this somewhat frank assessment of the NAOJ instrumentation program is accurate and of value to NAOJ. This is the least that I can do to repay the hospitality and warm reception I received from everybody in the solar physics group of NAOJ.

Steiner, Oskar (Kiepenheuer-Institut fuer Sonnenphysik)

May stay at NAOJ was very useful. First, it gave me the unique possibility to get acquaint with many of the work and the authors of the scientific results that emerged from the HINODE space mission. Second, it also provided me the unique opportunity to prepare lectures including practical exercises for an introduction to the CO5BOLD code, something, which I had not prepared before in this formal way. Third, I started a scientific collaboration, which has lead to interesting results that should be soon ready for publication. Last but not least, I enjoyed the friendly and generous hospitality given by NAOJ. I am looking forward to future collaborative projects.

Rimmele, Thomas (NSO)

I would like to thank all members of NAOJ for their outstanding hospitality and for making my stay at NAOJ scientifically very productive. The exchange of scientific results and ideas with senior staff, students and post-docs at NAOJ, Kyoto University, ISAS and Hida Observatory was extremely fruitful. Hinode is a wonderful observatory that has already produced magnificent results and will continue to do so. Since my stay at NAOJ, at NSO we have become much more involved with Hinode, providing ground based support and science analysis. I experienced NAOJ as a well organized and well managed science center with a highly competent research staff and a very supportive administrative staff. I'm hopeful that our constructive collaboration will continue into the future and extend to future missions and projects, such as Solar-C and ATST. I hope to be back for another visit at NAOJ soon.

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