Interferometer for receiving and recording of radio emission of the Sun at the frequency of 220 MHz - Biblioteka UMCS

A N N A L E S

81,9(56,7$7,60$5,$(&85,(6.à2'2:6.$

/8%/,1±32/21,$

92//;9,,, 6(&7,2$$$ 2013

ABSTRACT

The interference radiotelescope for receiving of the solar radio waves at frequency 220 MHz and continuous data obtained using the radiotelescope from 1 January 1985 to 30 November 2013 DUHSUHVHQWHG

,1752'8&7,21

The interference radiotelescope for reception of the solar radio waves was constructed in the Institute of Physics in 1980 for didactic aims and SRSXODUL]DWLRQRIUDGLRDVWURQRP\7KHLPPRELOHDQWHQQDVDUHWZRVRFDOOHG

ORQJ<DJDW\SHFRPSULVLQJGLSROHDQGGLUHFWRUSLHFHVDUUDQJHGKRUL]RQ- WDOO\LQWKH(DVW:HVWGLUHFWLRQ7KHUHFHLYLQJIUHTXHQF\LV 0+]7KH

WZRGLSROHVDUHFRQQHFWHGZLWKHDFKRWKHUZLWKDFRQFHQWULFFDEOHPDN- ing one important common point by means of a T-connection of the BNC W\SH,QWKLVSRLQWGXULQJWKHDSSDUHQW6XQPRYHPHQWWKHLQWHUIHUHQFHRI

electrical vibrations takes place in the sky giving characteristic interference PLQLPDDQGPD[LPDLQVXFFHVVLRQ)DUWKHURQO\DVLQJOHFDEOHFRQQHFWVWKH

DQWHQQDV ZLWK D VHQVLWLYH UHFHLYHU ZKLFK LV D VHOHFWLYH WUDQVLVWRU PLFUR- YROWPHWHURIWKH:06W\SHSURGXFHGE\WKHILUP,1&2:URFáDZ7KH

Interferometer for receiving and recording of radio emission of the Sun at the frequency of 220 MHz

/21*,1*à$'<6=(:6.,

720$6=3,(ē.26

,QVWLWXWHRI3K\VLFV0DULD&XULH6NáRGRZVND8QLYHUVLW\SO0&XULH6NáRGRZVNLHM

/XEOLQ3RODQG

1 &RUUHVSRQGLQJDXWKRU(PDLODGGUHVVOJODG\V]#XPFVSO

receiving frequency is 220 0+]WKHEDQGZLGWKRIDPSOLILHGIUHTXHQFLHV

is 120 N+]$W WKH RXWSXW EHWZHHQ WKH PLFURYROWPHWHU DQG WKH UHFRUGHU

an additional circuit integration RC with the time constant of 2 sec was LQVWDOOHG7KHUHFRUGHURUUHFRUGLQJFRPSXWHUDVXVXDOO\ZRUNVDWWKHVHQ- VLWLYLW\RIP9RQWKHZKROHVFDOHVRPHWLPHVWKHV\VWHPLVPDQXDOO\

switched over in the case of traditional recorder and automatically in the FDVHRIWKHFRPSXWHUZRUNLQJDWSUHVHQWDWWKHSHULRGRIDFWLYH6XQLQWRD

ORZHUVHQVLWLYLW\HJ mV or even 200 P97KHWDSHVSHHGLV FPK

The receiver works without switching off but the recorder is automatically VZLWFKHGRQE\DFRQWUROOHUZLWKDTXDUW]FORFNDW87DQGVZLWFKHG

RIIDW877KHFRPSXWHUVZLWFKHVRQWKHUHFRUGHULQWKHVDPHWLPH

LQWHUYDOVXVLQJDQLQWULQVLFFRPSXWHUFORFNZKLFKLVGDLO\V\QFKURQL]HGE\

DQLQWHUQHWWLPHVHUYHU

)LJ6FKHPHRIWKHLQWHUIHUHQFHUDGLRWHOHVFRSH7UDUHPDWFKLQJWUDQVIRUPHUV:06LV

DVHOHFWLYHPLFURYROWPHWHUZRUNLQJDVDVHQVLWLYHUHFHLYHU5&LVDQLQWHJUDWLQJFLUFXLW8_k is the FRPSHQVDWLRQV\VWHPRIFRQVWDQWYROWDJHRULJLQDWHGIURPWKHDSSDUDWXVQRLVH.LVWKHUHFRUGHU

7KHFRPSXWHUZRUNLQJEDVHGRQWKHSURJUDPZULWWHQE\7RPDV]3LHĔNRV

As it follows from the course of spectra of quiet and active sun radio HPLVVLRQ WKH PRVW LQWHUHVWLQJ HIIHFW LQ WKH IRUP RI VRFDOOHG RFFDVLRQDO

radio phenomena should be expected on the meter waves; therefore the UHFHLYLQJ IUHTXHQF\ RI  0+] ZDV VHOHFWHG 7KH LQWHUIHUHQFH V\VWHP

SDUDPHWHU LV WKH DQJXODU UHVROYLQJ SRZHU GHWHUPLQHG IURP WKH IRUPXOD

Į = Ȝ lZKHUH Ȝ is the wave length of the received electromagnetic radia-

tion and lis the interference system base; in our case l= 18 Ȝ 7KLVPHDQV

WKDWWKHDQJXODUGLDPHWHULVDERXWž7KXVWKH6XQLVUHFHLYHGDVWKHZKROH

6XQDQJXODUGLDPHWHULVžVRWKHLQWHUIHUHQFHV\VWHPUHVROYLQJSRZHU

GRHVQRWDOORZWRORFDWHUDGLRHPLVVLRQFHQWHUVRQWKH6XQ¶VGLVN7KHVHDUH

the averaged measurements of total radio emission of the Sun on the wave

 m in the spectrum of 120 N+]EDQGZLGWK$OOQDWXUDOUDGLRVRXUFHVLQ

the outer space emit radio waves which induce electric charge fluctuation QRLVHLQWKHDQWHQQDV

)LJ3KRWRRIRQHRIWZRDQWHQQDV

)LJ7\SLFDOUHFRUGRIUDGLRHPLVVLRQRIWKHDFWLYH6XQ7KHUHFDQEHVHHQVHTXHQWLDOLQWHU- ference maxima and minima when vibrations from both antennas amplify or attenuate each other LQVXFFHVVLRQGXHWRVKLIWRIWKH6XQSRVLWLRQLQWKHVN\7KHHIIHFWRILPPRELOHDQWHQQDVLVDOVR

YLVLEOHWKHPD[LPDDUHORZHULQWKHPRUQLQJDQGLQWKHDIWHUQRRQ&RUUHFWHGIXOOGD\¶VFRXUVHVRI

interference record are obtained by multiplication of the node heights by the correction coefficients FDOFXODWHGGXULQJPXOWLSOHUHFRUGLQJVRIWKH6XQRQGLIIHUHQWGD\V

5(68/76

The first recordings of the radio emission of the Sun were made in the In- VWLWXWH RI 3K\VLFV LQ  DW WKH IUHTXHQF\  0+] WKHQ IUHHIURP WKH UDGLR

VWDWLRQ7KHZHEVLWHZZZ]IRXPFVOXEOLQSOLQFOXGHVVRPHLQWHUHVWLQJDUFKLYDO

UHFRUGVPDGHE\PHDQVRIWKHUDGLRWHOHVFRSH0+]>@5HJXODUUHFRUGLQJV

DWWKHIUHTXHQF\0+]EHJDQLQ>@EXWWKHGDWDKDYHEHHQHODERUDWHG

VLQFHWKHEHJLQQLQJRI>@$OOGDWDDERXWUDUHSKHQRPHQDJLYHQRQZZZ

DQGSXEOLVKHGLQVFLHQWLILFSDSHUVDQG0DVWHUWKHVHVZHUHFRPSDUHGZLWKWKRVH

REWDLQHG LQ WKH 'HSDUWDPHQW RI 5DGLRDVWURQRP\ 1LFKRODV &RSHUQLFXV 8QLYHU- VLW\LQ7RUXĔZZZDVWURXQLWRUXQSO7KHSUHVHQWDXWKRUVDUHJUDWHIXOWR06F

*UDĪ\QD*DZURĔVNDIRUKHUFRPPHQWVDQGGHWDLOHGPRQWKO\UHSRUWV>@>@>@

>@2FFDVLRQDOLQGXVWULDOGLVWXUEDQFHVZKLFKDSSHDUVRPHWLPHVORRNLQJOLNHVR- ODURQHVZKLFKDUHDVXGGHQLQFUHDVHLQWKHUDGLRZDYHLQWHQVLW\ZHUHHOLPLQDWHG

ZLWK FDXWLRQ (YHU\GD\ W\SLFDO GDWD DQG VWDWLVWLFDO GHVFULSWLRQV IURP  -DQXDU\

WR1RYHPEHUFDQEHIRXQGRQRXUZHEVLWH7KHUHZHDOVRSODFH

LQWHUHVWLQJUHFRUGLQJVRIUDUHSKHQRPHQDXVLQJWKHQRPHQFODWXUHLQWURGXFHGLQWR

WKHUDGLRDVWURQRPLFDOOLWHUDWXUHE\+7DQDND>@DQGDGMXVWHGIRUWKH3ROLVKUHDG- HUVQHHGVE\.%RUNRZVNL>@

'HWDLOHGGDWDDERXWWKHUDGLRWHOHVFRSHDQGWKHREWDLQHGPHDVXUHPHQWVUHVXOWV

FDQEHIRXQGRQWKHHDUOLHUPHQWLRQHGZHEVLWHDQGLQWKHELEOLRJUDSK\(YHU\GD\FXU- UHQWGDWDDUHJLYHQRQWKHZHEVLWHRIWKH'HSDUWPHQWRI*HQHUDO3K\VLFVDQG3K\VLFV

(GXFDWLRQWKH,QVWLWXWHRI3K\VLFV0&XULH6NáRGRZVND8QLYHUVLW\LQ/XEOLQ

Almost a 30-year period of time and good correlation of our results with those REWDLQHGE\5DGLRDVWURQRPHUVIURP7RUXĔPDGHLWSRVVLEOHWRFDUU\RXWVWDWLVWLFDO

DQDO\VLVRIWKHFRXUVHRIGDLO\GDWDDERXWLQWHQVLW\RIVRODUUDGLRZDYHV

7KLVSDSHUSUHVHQWVVXFKDQDQDO\VLV7KHGLDJUDPLQ)LJSUHVHQWVWKHGDLO\

DYHUDJHUDGLRHPLVVLRQZKLOVWLQ)LJWKH\HDUO\DYHUDJHYDOXHVDUHSORWWHG7KH

SUREDELOLW\GLVWULEXWLRQRIRFFXUUHQFHRILQGLYLGXDOYDOXHVWKLVFDQEHFDOOHGWKH

GLVWULEXWLRQRIDPSOLWXGHVRIWKHGDWDREWDLQHGLQWKHVWXGLHGSHULRGRIWLPHDUH

VKRZQLQ)LJ

)LJ'DLO\DYHUDJHUDGLRHPLVVLRQRIWKH6XQDWIUHTXHQF\0+]

)LJ<HDUO\DYHUDJHYDOXHVRIWKHVRODUUDGLRHPLVVLRQ

)LJ3UREDELOLW\GLVWULEXWLRQRIRFFXUUHQFHRILQGLYLGXDOYDOXHVRIWKHVRODUUDGLRHPLVVLRQ

$&.12:/('*(0(176

:HDUHJUDWHIXOWR06F*UDĪ\QD*DZURĔVNDIRUPDQ\\HDUV¶FROODERUD- tion including valuable advice and to other Colleagues – Radioastronomers IURP1LFKRODV&RSHUQLFXV8QLYHUVLW\LQ7RUXĔ

REFERENCES

>@/*áDG\V]HZVNL5DGLRWHlHVNRSGRDPDWRUVNLFKUHMHVWUDFMLSURPLHQLRZDQLDUDGLRZHJR6áRĔFD

8UDQLDQR±8UDQLDQR±

>@/*áDG\V]HZVNL5DGLRWHlHVNRSGRUHMHVWUDFMLSURPLHQLRZDQLDUDGLRZHJR6áRĔFDL*DlDNW\NLQD

F]ĊVWRĞFL0+]$QQDOHV80&6VHFW$$$YRO±

>@/*áDG\V]HZVNL%8VRZLF],QWHUIHURPHWUGRUHMHVWUDFMLSURPLHQLRZDQLDUDGLRZHJR6áRĔFD

QDF]ĊVWRĞFL0+]$QQDOHV80&6VHFW$$$YRO±

>@/*áDG\V]HZVNL6\VWHPDW\F]QHUHMHVWUDFMHSURPLHQLRZDQLDUDGLRZHJR6áRĔFDQDF]ĊVWRĞFL

0+]Z/XElLQLH3RVWĊS\$VWURQRPLLYRO±

>@**DZURĔVND6RlDU5DGLR(PLVVLRQ6LQJlH)UHTXHQF\7RWDl)lX[2EVHUYDWLRQVDW0+]

PRQWKO\UHSRUWVDERXWGDLO\PHDQYDOXHVRIUDGLRHPLVVLRQRIWKH6XQ

>@**DZURĔVND.%RUNRZVNL-8VRZLF]&RUUHFWLRQDQG$QDl\VLVRI'DLl\6RlDU)lX[DW

0+]DV0HDVXUHGDW7RUXĔ–$FWD$VWURQ±

>@**DZURĔVND.%RUNRZVNL6KRUW3HULRG)lXFWXDWLRQVLQWKH6RlDU)lX[DW0+]3URF

WK0HHWLQJ3RO$VWURQ6RF3R]QDĔ±

>@**DZURĔVND.%RUNRZVNL$6HDUFKIRU3HULRGLFLWLHVLQWKH6RlDU)lX[DW0+]3URF

&RQI8QLY%DUFHORQD±

>@+7DQDND,QVWUXFWLRQ0DQXDlIRU0RQWKl\5HSRUW6RODU5DGLR(PLVVLRQ7R\RNDZD2EVHUYD- WRU\-DQXDU\

>@ . %RUNRZVNL 6áXĪED 6áRĔFD QD F]ĊVWRĞFL  0+] Z 2EVHUZDWRULXP 7RUXĔVNLP 3RVWĊS\

$VWURQRPLL7±6áXĪED6áRĔFDQDIDlDFKUDGLRZ\FKZ7RUXQLX8UDQLDQR

±