This is the home page of Solar Radio Observation at NICT. To get Japanese version, click here.

Observation of HiRAS system finished on 30 September 2016. From now on, thank you for Yamagawa solar radio observation.

Latest HiRAS Data (Yesterday's Solar Radio Observations)

• HiRAS(18h-03hUT) Spectrogram(25-2500MHz)
• HiRAS(03h-12hUT) Spectrogram(25-2500MHz)
• Fixed Frequency Measurements(2.8GHz)

  Realtime HiRAS Data 

Today	Yesterday

Recent Typical HiRAS Observation

• July 25, 1997 event 

• Past Events

HiRAS Data Archives (GIF files)

• 1996(August and later)
• 1997
• 1998
• 1999
• 2000
• 2001
• 2002
• 2003
• 2004
• 2005
• 2006
• 2007
• 2008
• 2009
• 2010
• 2011
• 2012
• 2013
• 2014
• 2015
• 2016

HiRAS Spectral Observation Summary Reports (Text files)

• Available period : October,1994 - December,2011

HiRAS Single frequency Observations Summary Reports (PDF files)

• Available period : July,2000 - June,2012

HiRAS (Hiraiso Radio Spectrograph) System

• System Description
• System Block Diagram
• Antennas
• System Characteristics
• System History

Typical HiRAS Observations

• Classification of solar radio bursts(a bit modified!)
• Type I bursts
• Type II and III bursts
• Type II and IV bursts
• Type III and IV bursts
• Type V bursts (now preparing)
• Feb.20,1994 event 

For any question or comments, please contact here.

Updated on August 16, 2012