1 / 6

Helioseismology by Hinode(Solar-B)

Hinode, a Japan-US-UK collaboration, is a mission equipped with the Solar Optical Telescope (SOT), X-ray Telescope (XRT), and EUV Imaging Spectrometer (EIS). Its main goal is to understand the generation, transport, and dissipation of the solar magnetic field. The high-resolution SOT Dopplergrams obtained can be used for local helioseismology.

hoagland
Download Presentation

Helioseismology by Hinode(Solar-B)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Helioseismology by Hinode(Solar-B) Takashi Sekii (NAOJ)

  2. Hinode/Solar-B (1/2) • It is an ISAS mission but in fact there are more people at NAOJ working on it (Solar-B project office is headed by S. Tsuneta) • Japan-US-UK collaboration • Successfully launched on 23 September 2006 and named Hinode • Pronounced (approximately) He-nod-A • Means ‘Sunrise’ HELAS Workshop September 2006

  3. Hinode/Solar-B (2/2) • Equipped with Solar Optical Telescope(SOT), X-ray Telescope (XRT) and EUV Imaging Spectrometer (EIS) • On a Sun-synchronous orbit (alt.~600km) , providing 24-hr coverage for 8 months each year • The main scientific goal: to understand generation, transport and dissipation of solar mangetic field • 50-cm SOT produces high-resolution Dopplergrams that can be used for local helioseismology HELAS Workshop September 2006

  4. Solar Optical Telescope (1/2) • Narrowband Filter Imager(NFI) produces filtergrams, which are then converted to dopplergrams • Spatial resolution: 0.2”-0.3” = 150km (@disc centre) • pixel size 0.08” • Field of view: 328”×164” (unvignetted 264”×164”) [164” ~ 10 (heliographic) degree] • Equipped with correlation tracker • Cadence can be down to ~15sec HELAS Workshop September 2006

  5. Solar Optical Telescope (2/2) • Dopplergram target lines • Photospheric: Fe I 5576 (non-magnetic) • Chromospheric: Mg I 5173 (lower chromosphere, also for magnetogram) • Can use photospheric magnetic lines for comparison with MDI/HMI • Can observe high latitudes • ‘Simultaneous’ magnetograms can be acquired too HELAS Workshop September 2006

  6. Concluding messages • Thanks for your kind invitation, sorry I could not come • SOT on-board Hinode provides opportunity for a high-resolution (although narrow FOV) local helioseismology • Hope you all will be joining us in analysing Hinode data HELAS Workshop September 2006

More Related