Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/27055
Titolo: | Monitoring of the peculiar X-ray binary pulsar SAX J0635+0533 | Autori: | LA PALOMBARA, NICOLA MEREGHETTI, Sandro |
Data pubblicazione: | 2017 | Titolo del volume in cui è pubblicato il poster: | The X-ray Universe 2017 | Da pagina:: | 291 | Abstract: | SAX J0635.2+0533 is a binary pulsar with a very short pulsation period (P = 33.8 ms) and a high long-term spin down (\dot P > 3.8 × 10^{-13} s s^{-1}), which suggests a rotation-powered (instead of an accretion-powered) nature for this source. While it was discovered at a flux level around 10^{-11} erg cm^{-2} s^{-1}, between 2003 and 2004 it was detected with XMM-Newton with an average flux of ∼ 10^{-13} erg cm^{-2} s^{-1}; moreover, the flux varied of over one order of magnitude on time scales of a few days. This large flux variability is difficult to explain for a rotation-powered pulsar, while the matter accretion onto the NS surface implies a very low magnetic field (B ∼ 10^8 G). Therefore, the nature of SAX J0635.2+0533 remained uncertain.Between 2015 and 2016 we performed a monitoring campaign with Swift, detecting the source between 10^{-13} and 10^{-12} erg cm^{-2} s^{-1}; moreover, with a systematic analysis of all the observations performed with RXTE we revealed that between 1999 and 2001 the source remained active at a flux level above 10^{-12} erg cm^{-2} s^{-1}.Here we report in detail these results and discuss their impact on the assessment of the source nature. | Titolo del convegno: | The X-ray Universe 2017 | Luogo del convegno: | Roma | Periodo del convegno: | 6-9 giugno, 2017 | URI: | http://hdl.handle.net/20.500.12386/27055 | URL: | https://www.cosmos.esa.int/web/xmm-newton/2017-symposium | Bibcode ADS: | 2017xru..conf..291L | Fulltext: | open |
È visualizzato nelle collezioni: | 3.01 Contributi in Atti di convegno |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
X-ray-2017_La-Palombara_SAX-J0635_poster.pdf | poster | 970.48 kB | Adobe PDF | Visualizza/apri |
Page view(s)
53
controllato il 20-apr-2024
Download(s)
11
controllato il 20-apr-2024
Google ScholarTM
Check
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.