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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳丕燊(Pisin Chen) | |
| dc.contributor.author | Yu-Hsin Wang | en |
| dc.contributor.author | 王宇昕 | zh_TW |
| dc.date.accessioned | 2022-11-24T03:05:24Z | - |
| dc.date.available | 2021-11-04 | |
| dc.date.available | 2022-11-24T03:05:24Z | - |
| dc.date.copyright | 2021-11-04 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-10-29 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/80376 | - |
| dc.description.abstract | 快速電波爆發是源自銀河系外未知來源的毫秒級電波爆發。目前已探測到的快速電波爆發事件之無線電波的頻率最高達8吉赫(GHz)，最低則有100兆赫(MHz)。南極瞬態脈衝天線(ANITA)是以在南極探測極高能宇宙射線及微中子為目的的美國國家航空暨太空總署的高空氣球酬載實驗，儘管ANITA並非為了快速電波爆發而設計，但其接收的頻段為180至1200兆赫，剛好與快速電波爆發的頻率重合，因此是有機會利用ANITA偵測到快速電波爆發事件的。 在論文中，我描述了利用ANITA-IV所蒐集的數據搜尋快速電波爆發的分析方法。在本文中，ANITA的軟硬體設備、我的分析方法及結果、還有未來可以改進的方法也有詳細描述。在現在的分析方法下，ANITA-IV並沒有成功偵測到快速電波爆發。然而，可以藉由我所採用的分析方法設定快速電波爆發的事件通量上限。 | zh_TW |
| dc.description.provenance | Made available in DSpace on 2022-11-24T03:05:24Z (GMT). No. of bitstreams: 1 U0001-0606202115234900.pdf: 11098179 bytes, checksum: 8928a3b0683e996eaa30a2bf5dd50661 (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | Acknowledgements i 摘要 ii Abstract iii Contents iv List of Figures viii List of Tables x Chapter 1 Introduction 1 1.1 History 1 1.2 Properties 2 1.2.1 Observational Properties 3 1.2.2 Types 3 1.2.3 Origins 3 1.2.4 Rate 4 1.3 Propagation in the Universe 5 1.3.1 Dispersion 5 1.3.2 Dispersion Measure of FRBs 6 1.4 Detections of Fast Radio Bursts 7 1.4.1 CHIME/FRB 7 1.4.2 ASKAP 9 1.4.3 VLBI Technique 9 1.5 Future 10 Chapter 2 ANtarctic Impulse Transient Antenna (ANITA) 11 2.1 ANITA Overview 11 2.1.1 Concept 11 2.1.2 Four ANITA Flights 12 2.2 Payload 14 2.3 Antennas 14 2.4 Signal Processing 15 2.5 FrontEnd Electronics 15 2.6 Trigger System 16 2.6.1 Hybrid Coupler 17 2.6.2 L0 Trigger 17 2.6.3 L1 Trigger 18 2.6.4 L2 Trigger 18 2.6.5 L3 Trigger 18 2.7 Digitization 18 2.8 GPS 19 2.9 The Fourth Flight of ANITA 19 2.10 Searching for FRB with ANITAIV 19 2.10.1 Power Estimation of FRBs 20 2.10.2 FRB signals in ANITA events 22 Chapter 3 ANITA Data Analysis Method 23 3.1 Analysis Software 23 3.1.1 anitaTreeMaker 23 3.1.2 eventReaderRoot 24 3.1.3 anitaEventCorrelator 24 3.1.4 AnitaAnalysisFramework and UCorrelator 24 3.1.5 anitaMagicDisplay 24 3.2 Data 24 3.2.1 Pulser Events 25 3.2.2 Thermal Samples 25 3.3 Analysis Overview 26 3.4 Spectrogram 26 3.4.1 Event Waveform 26 3.4.2 Event Spectrum 26 3.4.3 Coadding Spectrum and CoherentlySummed Waveform 27 3.4.4 Spectrogram 30 3.5 Quality Cut 30 3.5.1 Glitches 31 3.5.2 Payload blasts 32 3.5.3 Pulser Events 32 3.5.4 Signals from the Triggered Phi Sectors 33 3.6 Continuous Wave Filtering 34 3.7 DM Transform 36 3.7.1 DM Transform 36 3.7.2 DM Count 37 3.7.3 Data Selection 37 3.7.4 FRB after DM Transform 38 3.8 Peak Searching 38 Chapter 4 Analysis and Results 39 4.1 Dataset 39 4.1.1 ANITA Data 39 4.1.2 Simulation Data 40 4.2 A Simple Simulation 40 4.2.1 Simulation Parameters 40 4.2.2 Simulation Method 40 4.3 Blinding 42 4.4 Good Peak Cut 42 4.5 DM Cut 43 4.6 DM Count Cut 44 4.7 Summary of the Cut Criteria 46 4.8 Unblinding 47 4.9 Upper Limit of the FRB Event Flux 47 4.10 Summary of the Analysis Results 48 4.11 Future 48 Chapter 5 Conclusion 50 References 51 Appendix A — TAROGE Power System 54 A.1 TAROGE Overview 54 A.2 Power System of TAROGE4 55 A.2.1 TAROGE4 Power Requirement 55 A.2.2 PV Panel Array 56 A.2.3 MPPT Charge Controller 57 A.2.4 Battery Bank 57 A.2.5 Power Board 58 A.2.6 Computer 58 A.3 Improvements on the TAROGE Power System 59 A.3.1 MPPT Firmware Update 59 A.3.2 Surge Protection Device 60 A.3.3 Software Update 61 A.4 Summary 62 Appendix B — The Spectrograms that pass all the cuts 63 | |
| dc.language.iso | en | |
| dc.subject | 快速電波爆發 | zh_TW |
| dc.subject | 無線電波 | zh_TW |
| dc.subject | 無線電天文學 | zh_TW |
| dc.subject | Radio astronomy | en |
| dc.subject | Fast radio burst | en |
| dc.subject | Radio wave | en |
| dc.title | 分析ANITA-IV之數據以搜尋快電波爆發 | zh_TW |
| dc.title | A Search for Fast Radio Bursts with ANITA-IV Experiment | en |
| dc.date.schoolyear | 109-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 南智祐(Hsin-Tsai Liu),劉宗哲(Chih-Yang Tseng) | |
| dc.subject.keyword | 快速電波爆發,無線電波,無線電天文學, | zh_TW |
| dc.subject.keyword | Fast radio burst,Radio wave,Radio astronomy, | en |
| dc.relation.page | 78 | |
| dc.identifier.doi | 10.6342/NTU202100960 | |
| dc.rights.note | 同意授權(限校園內公開) | |
| dc.date.accepted | 2021-10-29 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 物理學研究所 | zh_TW |
| 顯示於系所單位： | 物理學系 | |
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