Počet záznamů: 1
Polarization Accuracy Verification of the Chromospheric LAyer SpectroPolarimeter
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SYSNO ASEP 0562959 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Polarization Accuracy Verification of the Chromospheric LAyer SpectroPolarimeter Tvůrce(i) Song, D. (KR)
Ishikawa, R. (JP)
Kano, R. (JP)
Štěpán, Jiří (ASU-R) RID, ORCIDCelkový počet autorů 28 Číslo článku 135 Zdroj.dok. Solar Physics. - : Springer - ISSN 0038-0938
Roč. 297, č. 10 (2022)Poč.str. 32 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova magnetic fields ; chromosphere ; instrumental effects Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) Způsob publikování Omezený přístup Institucionální podpora ASU-R - RVO:67985815 UT WOS 000868309900001 EID SCOPUS 85140061275 DOI 10.1007/s11207-022-02064-8 Anotace We have developed an advanced UV spectropolarimeter called Chromospheric LAyer SpectroPolarimeter (CLASP2), aimed at achieving very high accuracy measurements (<0.1% at 3 sigma) of the linear (Q/I and U/I) and circular (V/I) polarizations of the Mg II h and k lines (280 nm). CLASP2 was launched on board a NASA sounding rocket on April 11, 2019. It successfully detected the full Stokes vector in an active-region plage and in the quiet Sun near the limb across the Mg II h and k lines for the first time. To verify the polarization characteristics of CLASP2, the response matrix is estimated by combining the results obtained from the preflight calibration on the ground, with the results of the inflight calibration acquired at the solar-disk center. We find that the response matrix of CLASP2 in the Mg II h and k lines is notably close to an ideal response matrix, i.e., the scale factor and the crosstalk terms are close to 1 and 0, respectively. Moreover, the uncertainty of each Stokes parameter estimated by the repeatability of the measurements is verified to be within the required tolerance. Based on our investigation, we conclude that CLASP2 achieves 0.1% polarization accuracy at a 3 sigma level. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2023 Elektronická adresa https://doi.org/10.1007/s11207-022-02064-8
Počet záznamů: 1