中德射电天文双边研讨会——用射电探测宇宙Sino-German Bilateral Workshop on Radio Astronomy

Cosmos Probed by Radio2005 September 7-14th, Kashi & Urumqi, China

国家天文台中德马普合作伙伴小组The Partner Group of MPIfR at NAOC

本会议由中德科学中心全额资助Fully Sponsored by

Chinesisch-Deutsches Zentrum fÜr Wissenschaftstorderung

Warm Welcome 热烈欢迎

Cosmos vs Universe?

---- mistake and more thoughts

Sino-German Bilateral Workshop on Radio Astronomy

Cosmos Probed by Radio2005 September 7-14th, Kashi & Urumqi, China

国家天文台中德马普合作伙伴小组The Partner Group of MPIfR at NAOC

Original Idea for the meeting:1. The Second Sino-German Bilateral Workshop on Radio

Astronomy2. 6cm polarization system installed: More cooperation &

Discussion3. To express sincere thanks to all colleagues for long-term

supportSino-German Science Center:Chinesisch-Deutsches Zentrum fÜr Wissenschaftstorderung

Fully Supported!

http://www.bao.ac.cn/bao/hjl/http://www.bao.ac.cn/bao/hjl/

Partner Group Partner Group of MPIfR at NAOC of MPIfR at NAOC for Radio Astronomfor Radio Astronomyy

PurposesPurposes: : find a way to tighten our find a way to tighten our cooperationcooperation with M with MPIfR PIfR on magnetic fields of galaxieson magnetic fields of galaxies

• Magnetic fields in nearby galaxiesMagnetic fields in nearby galaxies• Magnetic fields in our GalaxyMagnetic fields in our Galaxy

– using pulsar RMsusing pulsar RMs– using RMs of extragalactic radio sourcesusing RMs of extragalactic radio sources– using 6cm polarization survey using 6cm polarization survey -- the key project-- the key project

• Studies of pulsars and supernova remnantsStudies of pulsars and supernova remnants

Foundation of the partner groupFoundation of the partner group

PurposesPurposes: : find a way to tighten our find a way to tighten our cooperationcooperation with MPIfR with MPIfR on magnetic fields of galaxieson magnetic fields of galaxies

• 2000 Jan. 11: First idea of the partner group by R. Wielebinski 2000 Jan. 11: First idea of the partner group by R. Wielebinski • 2000 Feb.15: Application to CAS 2000 Feb.15: Application to CAS • 2000 Mar.15: Application to MPG 2000 Mar.15: Application to MPG • 2000 Nov.30: Formal approval from MPG, "the Letter of Appointm2000 Nov.30: Formal approval from MPG, "the Letter of Appointm

ent" for the group leader from the president of MPG ent" for the group leader from the president of MPG • 2001 March 26: Approval from CAS 2001 March 26: Approval from CAS • 2001 April 19: 2001 April 19: Official opening of the partner groupOfficial opening of the partner group R. Wielebinski visited NAOC R. Wielebinski visited NAOC • 2001 Dec.19: Grants from NAOC for initialization. 2001 Dec.19: Grants from NAOC for initialization. • 2002 January: Grants from MPIfR every quarter. 2002 January: Grants from MPIfR every quarter. • 2002 January: The partner group really starts running!2002 January: The partner group really starts running!

Foundation of the partner groupFoundation of the partner group

Purpose: Purpose: find a way to tighten our cooperation on find a way to tighten our cooperation on magnetic fields of galaxies (also our Galaxy).magnetic fields of galaxies (also our Galaxy).

• 2000 Jan. 112000 Jan. 11: First idea of the partner group by R. Wielebinski : First idea of the partner group by R. Wielebinski • 2000 Feb.15: Application to CAS 2000 Feb.15: Application to CAS • 2000 Mar.15: Application to MPG 2000 Mar.15: Application to MPG • 2000 Nov.30: Formal approval from MPG, "the Letter of Appointme2000 Nov.30: Formal approval from MPG, "the Letter of Appointme

nt" for the group leader from the president of MPG nt" for the group leader from the president of MPG • 2001 March 26: Approval from CAS 2001 March 26: Approval from CAS • 2001 April 19: 2001 April 19: Official opening of the partner groupOfficial opening of the partner group R. Wielebinski visited NAOC R. Wielebinski visited NAOC • 2001 Dec.19: Grants from NAOC for initialization. 2001 Dec.19: Grants from NAOC for initialization. • 2002 January: Grants from MPIfR every quarter. 2002 January: Grants from MPIfR every quarter. • 2002 January2002 January: The partner group really starts running!: The partner group really starts running!

Foundation of the partner groupFoundation of the partner group

Have to be patient!

It takes two years to make the group running!

• 2001 Oct.12-Nov.10: JinLin Han visited MPIfR: for work on pulsars and magnetic fields: some obs of PSR RMs • 2002 May-July: Xizhen Zhang & Xianghua Li visited at MPIfR • 2002 July: Prof. Wielebinski/Dr. Axel Jessner/ Dr. Marita Krause visited NAOC (Beijing) • 2002 July: Prof. Ernst Fuerst / Dr. Wolfgang Reich / Dr. Patricia Reich visited Urumqi and Beijing

2003 SARS problem!2003 SARS problem!• 2003 Dec.15th - 2004 Jan.15th: Prof. JinLin Han and Ms. Hui Men visited MPIfR: RM survey of strong polarized radio sources • 2004 May 27th-June 4th: Prof. Wielebinski visits NAOC:

– gave lectures on "The morphology of radio pulsars" and "Observations of warm/cold gas in galaxies" (also lectures in Beijing Normal University and Peking University);

– gives instructions/advises for construction of 50m & 40m radio telescope in China. • 2004 Sept.3rd: Dr. Wolfgang Reich visited NAOC: new progress of 6cm syst

em

Activisties of partner group: Activisties of partner group: Scientific Exchanges

• 2001 Oct.12-Nov.10: JinLin Han visited MPIfR: for work on pulsars and magnetic fields -- p.21: Invited Review• 2002 May-July: Xizhen Zhang & Xianghua Li visited at MPIfR -- p.59 paper• 2002 July: Prof. Wielebinski/Dr. Axel Jessner/ Dr. Marita Krause visited NAOC (Beijing) -- p.10 proceedings• 2002 July: Prof. Ernst Fuerst / Dr. Wolfgang Reich / Dr. Patricia Reich visited Urumqi and Beijing -- p.10 proceedings

2003 SARS problem!2003 SARS problem!• 2003 Dec.15th - 2004 Jan.15th: Prof. JinLin Han and Ms. Hui Men visited MPIfR: RM survey of strong polarized radio sources • 2004 May 27th-June 4th: Prof. Wielebinski visits NAOC:

– gave lectures on "The morphology of radio pulsars" and "Observations of warm/cold gas in galaxies" (also lectures in Beijing Normal University and Peking University);

– gives instructions/advises for construction of 50m & 40m radio telescope in China. • 2004 Sept.3rd: Dr. Wolfgang Reich visited NAOC: new progress of 6cm system

Activisties of partner group: Activisties of partner group: Scientific Exchanges

• Sino-German conference on radio astronomy:Sino-German conference on radio astronomy: Radio Studies of Galactic Objects, Galaxies, and AGNsRadio Studies of Galactic Objects, Galaxies, and AGNs

– 2001 Dec.: First Announcement2001 Dec.: First Announcement– Hosted by the partner group + RW organized German side Hosted by the partner group + RW organized German side – 2002 July 18-25 Xi'an, China2002 July 18-25 Xi'an, China– 9 German guests and 5 distinguished guests from other countrie9 German guests and 5 distinguished guests from other countrie

s, as well as s, as well as 70 (yes!) domestic participants70 (yes!) domestic participants– all enjoyed the hot spring and hot topicsall enjoyed the hot spring and hot topics– very successful meeting, deeply impressed to all participants very successful meeting, deeply impressed to all participants – earned a good fame from the Chinese astronomical societyearned a good fame from the Chinese astronomical society– Proceedings published in Proceedings published in 6 months! 6 months! Available on web & ADS!Available on web & ADS!

• International Conference:International Conference: The Magnetized Interstellar MediumThe Magnetized Interstellar Medium– 2003 Sept.8 -12th Antalya, Turkey2003 Sept.8 -12th Antalya, Turkey– MPIfR mainly organized + Han in SOCMPIfR mainly organized + Han in SOC– J.L. Han and X.H. Sun participatedJ.L. Han and X.H. Sun participated

Activisties of partner group: Activisties of partner group: Coorganized Meetings

System preparations --- visits from ChinaSystem preparations --- visits from China• 2001 May-June: Hongbo Zhang visited at MPIfR for receiver/antenna details 2001 May-June: Hongbo Zhang visited at MPIfR for receiver/antenna details • 2001 Oct. 26: MPG grants for receivers (front-end) approved 2001 Oct. 26: MPG grants for receivers (front-end) approved (55,000 DM+MPIfR matches) (55,000 DM+MPIfR matches) • 2002 Oct.1st -Dec.31: Mr. Xiaohui Sun visited MPIfR 2002 Oct.1st -Dec.31: Mr. Xiaohui Sun visited MPIfR (for survey software development). (for survey software development). • 2002 Nov. 25th -- 2003 May 27th: Mr. Maozhen Chen visited MPIfR2002 Nov. 25th -- 2003 May 27th: Mr. Maozhen Chen visited MPIfR (for the construction of the 6cm system). (for the construction of the 6cm system).

• 2003 July 22th - Oct. 22th: Mr. Xiaohui Sun visited MPIfR 2003 July 22th - Oct. 22th: Mr. Xiaohui Sun visited MPIfR (for survey software development). (for survey software development). • 2003 Oct.1st - Dec.20th: Mr. Maozhen Chen visited MPIfR 2003 Oct.1st - Dec.20th: Mr. Maozhen Chen visited MPIfR (for 6cm system assembly). (for 6cm system assembly).

• The 6cm receiver system: MissionThe 6cm receiver system: Mission

Activisties of partner group: Activisties of partner group: Urumqi 6 cm system

6cm receiver system: Mission • 2004 May/June: Strong efforts to get it in site & extensive attempts for the installation H. Mattes, P. Mueller, O. Lochner visited for 3 weeks! Failed due to lack of some parts and the box-size problem. • 2004 August: Second extensive work at Urumqi

– 5th -- 25th: O. Lochner, Mr. J. Klein & T. Lochner for installation. – 12th --29th: Dr. Peter Mueller for software test– 17th -- 28th: Dr. Patricia Reich for software test – 17th -- Sept.2nd: Dr. Wolfgang Reich for the test observations. – 18th/19th: First light of 6cm system: Beam pattern is great! – 30th: Tests results: system temperature ~20k, one of the best over the world!

Activities of partner group: Activities of partner group: Urumqi 6 cm system

International Evaluation for the Partner Group of MPIfR at NAOC for Radio AstronomyInternational Evaluation for the Partner Group of MPIfR at NAOC for Radio Astronomy2004 Oct.18/19th, Beijing2004 Oct.18/19th, Beijing

Activisties of partner group: Activisties of partner group: Urumqi 6 cm system

Urumqi 6 cm system --- Thanks a lot for all people involved!Now it is working!

Galactic plane polarization survey at 6cmGalactic plane polarization survey at 6cm

Urumqi 25m telescope

MPIfR 6cm receiver

……. Will finish in 3 years .... Will finish in 3 years ...

• Cooperation withCooperation with MPIfRMPIfR• System hardwareSystem hardware & software& software almost okalmost ok• No data at this No data at this frequencyfrequency• Less affacted by Less affacted by foreground RMforeground RM• Useful for CMB Useful for CMB polarizationpolarization

总强度图总强度图 偏振强度图偏振强度图

33OO xx 3 3OO55OO xx 4 4OO

44OO xx 5 5OO

First 6cm images of large SNRsFirst 6cm images of large SNRs

33OO xx 3 3OO

33OO xx 3 3OO33OO xx 3 3OO

44OO xx 4 4OO

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(by Urumqi telescop(by Urumqi telescope)e)

NAOC : J.L. Han, L. Xiao, X.H. Sun, C. Wang, W.B. ShiMPIFR : W. Reich, P. Reich & R. Wielebinski @2005

Color: Total intensityCounter: Polarized intensityBar: magnetic fields

RMs of EGRs for the halo B-fieldRMs of EGRs for the halo B-field Only about 1000 ROnly about 1000 RMs available in literMs available in literature upto now...ature upto now...

We are using EffelWe are using Effelsberg -100m telescsberg -100m telescope to make a RM ope to make a RM survey of 1790 sousurvey of 1790 sources, enlarge the crces, enlarge the cover density by a fover density by a factor of three in moactor of three in most sky area……st sky area……

RMs of EGRs for the halo B-fieldRMs of EGRs for the halo B-field

Students in "Research Group of Compact

Objects and Diffuse Medium" PhD students & their projects

• Ms. MinZhi KongMs. MinZhi Kong (since 2002 Sept.) --- Accretion physics of black-holes in AGNs •Mr. XiaoHui SunMr. XiaoHui Sun (since 2003.Feb) --- 6cm polarization survey on the Galactic plane --- Physical properties of ISM and magnetic fields •Mr. WeiBin ShiMr. WeiBin Shi (since 2003 Sept) --- The structure of our Milky Way Galaxy --- 6cm polarization survey on the Galactic plane•Mr. JianWen XuMr. JianWen Xu (2004 Sept) --- Studies of Supernova Remnants•Mr. XiaoPeng YouMr. XiaoPeng You (since 2004 Sept) --- Pulsar timing and gravitational physics •Ms. Hui MenMs. Hui Men (since 2004 Sept) --- Radio continuum emission of NGC2997 --- ISM in the Galactic halo Associated PhD students• Mr. JiangShui ZhangMr. JiangShui Zhang (since 2003 Sept.) --- Magnetic fields and star formation process

Master Students & their projects:

• Mr. Chen Wang (Since 2003 Aug) --- Pulsar observations

• Mr. Hui Zhang (since 2003 Aug) --- Physics of pulsar magnetosphere

Galactic plane polarization survey at 6cmGalactic plane polarization survey at 6cm

Scientific Backgrounds and perspectivesScientific Backgrounds and perspectives--- talk by Wolfgang Reich--- talk by Wolfgang Reich

First publishable results First publishable results --- Cygnus Loop --- Cygnus Loop --- talk by Xiaohui Sun--- talk by Xiaohui Sun

Ground Radiation and Calibration testsGround Radiation and Calibration tests--- talk by Chen Wang--- talk by Chen Wang

SNRs resultsSNRs results--- talks by Jianwen Xu and Li Xiao--- talks by Jianwen Xu and Li Xiao

Some IDV Some IDV --- talk by Xiang Liu--- talk by Xiang Liu