Документ взят из кэша поисковой машины. Адрес оригинального документа : http://xray.sai.msu.ru/~polar/html/oldgamma/gamma_coll/grb9702 Дата изменения: Mon Nov 2 15:43:55 1998 Дата индексирования: Sat Dec 22 04:48:35 2007 Кодировка: Поисковые слова: эта киля

The source GRB970228 is mentioned in the following IAU Circ.:
6572, 6574, 6576, 6577, 6578, 6580, 6581, 6582, 6584, 6588, 6593, 6594, 6598,
6606, 6611, 6617, 6618, 6619, 6620, 6629, 6631, 6635, 6637, 6643

and in the following titles of astro-ph articles:
9704057, 9704153, 9704178, 9704198, 9704260, 9704278


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HOW IT WAS
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IAU | Date of | Instrument | Object | Data and Comments |
Circ.| Observ. | | | |
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6572 28 Feb SAX gamma- Duration of the burst \approx 80 s
burst Multipeak structure
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6576 28 Feb SAX X-ray Registration after 8 hours after
source the burst. Flux(2-10 KeV)=
2.8+/-0.4*10^{-12} erg/(s*sm^{-2})
Flux(0.5-10 Kev)= 4+/-0.6*10^{-12}

03 March SAX X-ray Flux became 20 times weaker
source
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6635 28 Feb 0.9 m Optical The flux decreased by more than
2.7 mag on Mar. 4.81
04 March telescope transient

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6584 01 March William Optical V=21.3
Hershel transient I=20.6
and source
Isaak
Newton V>23.6
09 March Telescopes I>22.2
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6618 03 March ARC Optical b_J=23.3+/-0.5
Source

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6588 06 March Extended R=24
Optical I=21.5
Source No variability >0.3 in R between 6
and 11 March
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6593 07 March ASCA X-ray Flux(2-10 Kev;GIS)=9+/-2.6*10^{-14}
source Flux(2-10 Kev;SIS)=7.2+/-2.1*10^{-14}
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6588 09 March Isaak Optical B=25.4
Newton Transient R=24
telescope
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
6588 13 March NTT Extended 1.3'' X 1''
Optical R=23.8+/-0.2
Source
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6580 old obs. ROSAT X-ray Was not detected
Source
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6637 10 March ROSAT X-ray One source in BeppoSAX error box
13 March Sources RX J050146+1146.8: R.A. =5h01m46s.7
Decl. = +11o46'51"
with an error radius of 10",
coinciding (within 2")
with the optical transient (IAUC 6584)
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6606 26 March HST Optical V=25.7+/-0.3
Point I=24.2+/-0.3
Source
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6619 30 March Keck I IR- J=23.5+/-0.2 K=22.0+/-0.2
Source IR variability
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

07 April HST Optical V=26.0+/-0.3
Source I=24.6+/-0.3
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6631 06 April Keck II Optical Extended source was not detected
Sources R_{total}=24.9+/-0.3
R_{total} droped since 06 March for
1+/-0.4
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6644 07 April HST Extended The extended source is detected at
source > 3-sigma significance

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