observation of cosmic gamma-ray bursts and solar flares in the ''relec''...
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OObserbservationvation of cosmic of cosmic gamma-ray bursts andgamma-ray bursts and
solar flares in solar flares in the the ''RELEC'' experiment on ''RELEC'' experiment on
the the ''VERNOV'' satellite''VERNOV'' satellite
The The ''VERNOV'' satellite''VERNOV'' satellitewas launched was launched
on on the the 8 July 20148 July 2014..Data are available from Data are available from
25.07.14 to 10.12.14.25.07.14 to 10.12.14.
The orbital parametersThe orbital parameters:: ApogeeApogee – 819 – 819 kmkm PerigeePerigee – 621 – 621 kmkm InclinationInclination – 98,4° – 98,4° Orbital periodOrbital period – 99,2 – 99,2 minmin
The main scientific objectives The main scientific objectives of of ''''RELECRELEC'''' are: are:
observation of transient phenomena in the atmosphereobservation of transient phenomena in the atmosphere study of processes of magnetospheric electrons study of processes of magnetospheric electrons
acceleration and precipitationsacceleration and precipitations
observation of GRBs and solar flaresobservation of GRBs and solar flares
An additional objective isAn additional objective is::
1.1.DRGE-1,2 - X-ray and gamma-ray spectrometers,DRGE-1,2 - X-ray and gamma-ray spectrometers,2.2.DRGE-3 - 3-axis detector for electrons,DRGE-3 - 3-axis detector for electrons,3.3.DUV - detector of ultraviolet and red radiation, DUV - detector of ultraviolet and red radiation, 4.4.Telescope-T - fast optical imager, Telescope-T - fast optical imager, 5.5.NChA, RFA - low-frequency and radio-frequency analyzers NChA, RFA - low-frequency and radio-frequency analyzers of electromagnetic field and waves,of electromagnetic field and waves,6.6. BE – data and control unit. BE – data and control unit.
Instruments:Instruments:
DRGE-3DRGE-3A spectrometer of A spectrometer of
charged particles charged particles containing of containing of 3 orthogonally 3 orthogonally directed scintillator directed scintillator detectors.detectors.
Energy rangeEnergy range: : 0,1 - 15 0,1 - 15 MeVMeV ( (for electronsfor electrons))..Sensitive area of each Sensitive area of each
detectordetector ~3 ~3 cmcm22..
Statistics of GCN notices in period Statistics of GCN notices in period of of ''''VernovVernov'''' data (25.07 -10.12) data (25.07 -10.12)
All notices All notices 288288All eventsAll events 248248Impossible to analyzeImpossible to analyze(no data, radiation belts, etc)(no data, radiation belts, etc)
144144
High backgroundHigh background 4949EEvents with auspicious vents with auspicious conditions of conditions of observationobservation
5555
Events registered by Events registered by RELECRELEC
66 ((~11%)~11%)
Table of registered events.Table of registered events.DateDate TimeTime Missions which also Missions which also
registered these eventsregistered these events
1.1. 07.08.14 07.08.14 1111:59:29.97:59:29.9711:59:33.4811:59:33.48
KonusKonusFermiFermi
2.2. 24.09.1424.09.14 17:49:04.7217:49:04.72 KonusKonus
3.3. 11.10.1411.10.14 06:46:17.6606:46:17.6606:46:20.3606:46:20.36
KonusKonusFermiFermi
4.4. 16.10.1416.10.14 13:01:03.5713:01:03.5713:01:37.6613:01:37.66
KonusKonusINTEGRALINTEGRAL
5.5. 18.10.1418.10.14 02:49:12.2102:49:12.21 KonusKonus
6.6. 04.11.1404.11.14 00:03:19.5100:03:19.51 KonusKonus1,3,6 - GRBs, 2,4 – solar flares, 5 – GRB candidate.
GRBs
07.08.14 07.08.14 DRGE-3DRGE-3
1111..1010.14.14
04.1104.11.14 .14 DRGE-3DRGE-3
Seconds from 1.01.2014
Cou
nts
per 2
ms
Time, hh:mm:ss
Time, hh:mm:ss
DRGE 1-1DRGE 1-1
DRGE 1-2DRGE 1-2
DRGE 2-2 DRGE 2-2 SumSum
GRB candidate GRB candidate 18.10.201418.10.2014DRGE-3
Time, hh:mm:ss
Solar flare Solar flare 24.09.201424.09.2014
Time profileTime profile
Time, hh:mm:ss
N(>
E),
1/se
c
Integral spectra of energy releaseIntegral spectra of energy releaseN
(>E)
, 1/
sec
Solar flare 16.10.2014Solar flare 16.10.2014
Time from 13:00:00Time from 13:00:00
Cou
nt ra
te, 1
/sec
C
ount
rate
, 1/s
ec
DRGE-11, NaI DRGE-22, NaI
Solar flares Solar flares 24.0924.09 (green lines) (green lines) and and 16.1016.10 (blue lines). (blue lines).
Cou
nt ra
te, 1
/sec
C
ount
rate
, 1/s
ec
Seconds from 13:00:00 for flare at 16.10.14 andSeconds from 13:00:00 for flare at 16.10.14 andfrom 17:47:30 for flare at 24.10.14from 17:47:30 for flare at 24.10.14
Thank you for attention!Thank you for attention!
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