2020/11/02
All of the websites, wiki documents, and CDF data repository of ERG-SC will be temporarily unavailable due to regular maintenance of electrical substation from evening of 13-Nov-2020 to morning of 16-Nov-2020.
2020/08/06
CIDAS system will be suspended due to regular maintenance of data center from 10:00 JST to 12:00 JST on 13-Aug-2020.
2020/02/06
The paper about conjugate observations between Arase and PANSY (Kataoka+, 2019) has been selected as a EPS highlighted paper 2019.
EPS Highlighted papers 2019
2019/12/20
Please join us to celebrate the 3rd anniversary of the Arase satellite on December 20, 2019.
The satellite has been in great shape and will boldly continue its exploration to seek out and unravel the mystery of Geospace, as has achieved since the launch in 2016. The end of cycle 24 is approaching, and the new cycle 25 will begin soon.
2019/12/02
2020 ERG Science and Space Weather Workshop will be held at National Central University, Taiwan on Jan 13-15 2020.
2019/10/24
CIDAS system will be suspended due to regular maintenance of electrical substation from evening of 15-Nov-2019 to morning of 19-Nov-2019.
2019/10/24
The web page on quick-look plots of ERG(Arase) Space Weather data at SEES/JAXA will be temporary halted due to a rolling blackout.
2019/11/01 16:00 JST - 2019/11/06 12:00 JST
2019/09/12
The GRL article on molecular ions observed by Arase (Seki+, GRL, 2019: https://doi.org/10.1029/2019GL084163) has been selected as an Editor's choice.
2019/07/12
Quick look plots for frequency spectrum of PWE/WFC (Chorus burst, SWPIA burst) are available.
2018/10/26
All of the websites, wiki documents, and CDF data repository of ERG-SC will be temporarily unavailable during November 16(Fri)-19 (Mon), 2018 due to a planned campus-wide power outage.
2018/08/21
Integrated quick look plots for all instruments are available.
2018/08/03
Release of Level-2 data files of Arase (ERG) satellite.
2018/06/18
Papers on overview of the project, instruments, ground-based observations, modeling/simulations and science center are available in the ERG special issue in Earth, Planets and Space.
2018/02/15
Dance of auroras: Scientists make first direct observation of electron frolic (Press Release from University of Tokyo)
2017/12/20
Happy first anniversary for launching ARASE!!
2017/11/08
ERG-SC System will be unavailable because of system maintenance, from Sep. 17 17:00 to 19 21:00.
2017/09/11
'The 3rd ERG Mission Science Workshop' was held at NCKU (National Cheng Kung University) in Taipei, Taiwan, on 5-8 Sep. information
2017/01/23
Completion of Exploration of energization and Radiation in Geospace Arase(ERG)'s Critical Operations Phase.
2016/12/20
Success of Epsilon-2 Launch with ERG Aboard.

2021 ERG Science and Inner Magnetosphere Workshop will be held online on Feb. 9-10 2021.

Registration (Deadline: Jan. 20 2021)

We, the ERG/HEP team, are pleased to announce that the new HEP Level-3 pitch-angle sorted flux data are now available from the ERG-SC website. The newly released data have the version number of v01_00. The data are generated from HEP Level-2 3-D flux data by sorting them with pitch angle values based on MGF Level-2 8 sec data. In obtaining average fluxes for pitch angle bins, only electron fluxes for azimuthal channels of 1, 2, 3, 6, 7, 8, 12, and 13 and for spin sectors #1, #2, ..., #14 (excluding spin sectors #0 and #15) were used in order to avoid effects of the imperfect flux normalization in Level-2 3-D flux data. Consequently, the derived pitch-angle spectra are equivalent to those that one can calculate using the part_products routine. Flux values in the Level-3 data have been averaged for 8 satellite spins (~ 64 sec) to get smooth spectra over pitch angle.

The Level-3 data are going to be made publicly available with a 1-year latency.

For SPEDAS users, the latest version of erg_load_hep.pro bundled in the ERG-SC plug-in for SPEDAS can be used to load Level-3 data. Copied below are some sample commands.

IDL> erg_init ERG> timespan, '2019-08-06' ERG> erg_load_hep, level='l3', uname='****', pass='****' (please pass the ERG project team ID/password through uname and pass)

HEP Level-3 data archived in the CDF format are available online from the ERG-SC data repository at: https://ergsc.isee.nagoya-u.ac.jp/data/ergsc/satellite/erg/hep/l3/pa/

The latest update and information on the instrument and data can also be found in the wiki page at: https://ergsc.isee.nagoya-u.ac.jp/mw/index.php/ErgSat/Hep

The ERG project asks all data users to show which version of data were used for his/her studies. This information should be included in, for example, the acknowledgment section of scientific papers in which ERG (Arase) satellite data are used.

The project also asks you to read carefully and follow the rules of the road (RoR) when you use the data for your own research. The latest RoR for the HEP and MGF data are copied at the end of this announcement. As the RoR reads, please contact the HEP and MGF teams (erg_hep_info [at] isee.nagoya-u.ac.jp, erg_mgf_info [at] isee.nagoya-u.ac.jp) before using the data for any publications and presentations.

T. Mitani (HEP PI), T. Takashima (HEP Co-I), A. Matsuoka (MGF PI) T. Hori (ERG-SC contact for HEP data) Y. Miyoshi (project scientist), I. Shinohara (project manager)

Collaborators

About 100 researchers from over 30 Japanese and overseas institutes/universities participate in the ERG  project.