The main object of my research activity has been the multi-wavelength study of the temporal evolution of binary millisecond pulsars (MSPs), from the accretion phase to the radio pulsar state. Throughout their evolution, binary MSPs show a rich phenomenology, manifesting themselves as accreting millisecond X-ray pulsars (AMXPs), transitional millisecond pulsars (tMSPs) and radio millisecond pulsars (RMSPs). Each of these classes has been object of study in my thesis, with the purpose of addressing open questions about the processes responsible for their multi-wavelength pulsed emission and the physical conditions in which they operate. The rapid variability between low/high and flares modes in tMSPs is another focus of this thesis. To investigate these phenomena, I made use of X-ray spectral analysis techniques, applying it to the study of the tMSPs XSS J12270–4859 and PSR J1023+0038. The presence of an accretion disc and a possible intra-binary shock emission in RMSPs and AMXPs systems has also been investigated in this thesis, given its implications for the study of the evolution of these objects. In this thesis, I present new results on the emission phenomena associated with binary MSPs in different stages of their evolution. The new observational evidences, in particular the discovery of optical/UV pulsations in the AMXP SAX J1808.4–3658 could lead to important developments of the current evolutionary scenario of MSPs.

Multi-wavelength study of binary millisecond pulsars / Arianna Miraval Zanon , 2021. 33. ciclo, Anno Accademico 2019/2020.

Multi-wavelength study of binary millisecond pulsars

MIRAVAL ZANON ARIANNA
2021-01-01

Abstract

The main object of my research activity has been the multi-wavelength study of the temporal evolution of binary millisecond pulsars (MSPs), from the accretion phase to the radio pulsar state. Throughout their evolution, binary MSPs show a rich phenomenology, manifesting themselves as accreting millisecond X-ray pulsars (AMXPs), transitional millisecond pulsars (tMSPs) and radio millisecond pulsars (RMSPs). Each of these classes has been object of study in my thesis, with the purpose of addressing open questions about the processes responsible for their multi-wavelength pulsed emission and the physical conditions in which they operate. The rapid variability between low/high and flares modes in tMSPs is another focus of this thesis. To investigate these phenomena, I made use of X-ray spectral analysis techniques, applying it to the study of the tMSPs XSS J12270–4859 and PSR J1023+0038. The presence of an accretion disc and a possible intra-binary shock emission in RMSPs and AMXPs systems has also been investigated in this thesis, given its implications for the study of the evolution of these objects. In this thesis, I present new results on the emission phenomena associated with binary MSPs in different stages of their evolution. The new observational evidences, in particular the discovery of optical/UV pulsations in the AMXP SAX J1808.4–3658 could lead to important developments of the current evolutionary scenario of MSPs.
2021
millisecond pulsars
Multi-wavelength study of binary millisecond pulsars / Arianna Miraval Zanon , 2021. 33. ciclo, Anno Accademico 2019/2020.
File in questo prodotto:
File Dimensione Formato  
PhD_thesis_AMZ_V1_A.pdf

accesso aperto

Tipologia: Tesi di dottorato
Licenza: Dominio pubblico
Dimensione 10.5 MB
Formato Adobe PDF
10.5 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2115068
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact