Handling the Background in IXPE Polarimetric Data

被引：94

作者：

Di Marco, Alessandro ^{[1
]}

Soffitta, Paolo ^{[1
]}

Costa, Enrico ^{[1
]}

Ferrazzoli, Riccardo ^{[1
]}

La Monaca, Fabio ^{[1
]}

Rankin, John ^{[1
]}

Ratheesh, Ajay ^{[1
]}

Xie, Fei ^{[1
,2
]}

Baldini, Luca ^{[3
,4
]}

Del Monte, Ettore ^{[1
]}

Ehlert, Steven R. ^{[5
]}

Fabiani, Sergio ^{[1
]}

Kim, Dawoon E. ^{[1
,6
,7
]}

Muleri, Fabio ^{[1
]}

O'Dell, Stephen L. ^{[5
]}

Ramsey, Brian D. ^{[5
]}

Rubini, Alda ^{[1
]}

Sgro, Carmelo ^{[4
]}

Silvestri, Stefano ^{[3
,4
]}

Tennant, Allyn F. ^{[5
]}

Weisskopf, Martin C. ^{[5
]}

机构：

[1] INAF, IAPS, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[2] Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning, Peoples R China

[3] Univ Pisa, Dipartimento Fis Enr Fermi, Largo B Pontecorvo 3, I-56127 Pisa, Italy

[4] INFN Pisa, Largo B Pontecorvo 3, I-56127 Pisa, Pisa, Italy

[5] NASA Marshall Space Flight Ctr, Huntsville, AL 35812 USA

[6] Univ Roma Tor Vergata, Dipartimento Fis, Via Ric Scientif 1, I-00133 Rome, Italy

[7] Univ Roma La Sapienza, Dipartimento Fis, Piazzale Aldo Moro 2, I-00185 Rome, Italy

来源：

ASTRONOMICAL JOURNAL | 2023年 / 165卷 / 04期

基金：

美国国家航空航天局;

关键词：

X-RAY-POLARIZATION; INSTRUMENT; BEPPOSAX; DETECTOR;

D O I：

10.3847/1538-3881/acba0f

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Imaging X-ray Polarimetry Explorer (IXPE) is a Small Explorer mission by NASA and Agenzia Spaziale Italiana, launched on 2021 December 9, dedicated to investigating X-ray polarimetry allowing angular-, time-, and energy-resolved observations in the 2-8 keV energy band. IXPE is in the science observation phase since 2022 January; it is comprised of three identical telescopes with grazing-incidence mirrors, each one having in the focal plane a gas pixel detector. In this paper, we present a possible guideline to obtain an optimal background selection in polarimetric analysis, and a rejection strategy to remove instrumental background. This work is based on the analysis of IXPE observations, aiming to improve as much as possible the polarimetric sensitivity. In particular, the developed strategies have been applied as a case study to the IXPE observation of the 4U 0142+61 magnetar.

引用

页数：15

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