RT-2 DETECTION OF QUASI-PERIODIC PULSATIONS IN THE 2009 JULY 5 SOLAR HARD X-RAY FLARE

Journal Article · Mon May 10 00:00:00 EDT 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/714/2/1142· OSTI ID:21448847

Rao, A R; Malkar, J P; Hingar, M K; Agrawal, V K ^[1]; Chakrabarti, S K ^[2]; Nandi, A ^[3]; Debnath, D; Kotoch, T B ^[4]; Chidambaram, T R; Vinod, P; Sreekumar, S ^[5]; Kotov, Y D; Buslov, A S; Yurov, V N; Tyshkevich, V G; Arkhangelskij, A I; Zyatkov, R A ^[6]; Begum, S Shaheda

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1. Tata Institute of Fundamental Research, Mumbai 400 005 (India)
2. S. N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700 098 (India)
3. Space Science Division, ISRO Head Quarters, New Bel Road, Bangalore 560 231 (India)
4. Indian Center for Space Physics, 43 Chalantika, Garia Station Road, Kolkata 700 084 (India)
5. Vikram Sarabhai Space Centre, VRC, Thiruvananthapuram 695 022 (India)
6. Moscow Engineering Physics Institute, Moscow 115409 (Russian Federation)

We present the results of an analysis of hard X-ray observations of the C2.7 solar flare detected by the RT-2 experiment on board the Coronas-Photon satellite. We detect hard X-ray pulsations at periods of {approx}12 s and {approx}15 s. We find a marginal evidence for a decrease in period with time. We have augmented these results using the publicly available data from the RHESSI satellite. We present a spectral analysis and measure the spectral parameters.

• OSTI ID: 21448847
• Journal Information: Astrophysical Journal, Vol. 714, Issue 2; Other Information: DOI: 10.1088/0004-637X/714/2/1142; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
GAMMA RADIATION
HARD X RADIATION
PERIODICITY
PHOTONS
PULSATIONS
SATELLITES
SOLAR FLARES
SUN
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
IONIZING RADIATIONS
MAIN SEQUENCE STARS
MASSLESS PARTICLES
RADIATIONS
SOLAR ACTIVITY
STARS
STELLAR ACTIVITY
STELLAR FLARES
VARIATIONS
X RADIATION