2018
DOI: 10.1051/0004-6361/201730729
|View full text |Cite
|
Sign up to set email alerts
|

A detailed X-ray investigation of ζ Puppis

Abstract: Context. One of the optically brightest and closest massive stars, ζ Pup, is also a bright X-ray source. Previously, its X-ray emission was found to be variable with light curves harbouring “trends” with a typical timescale longer than the exposure length, i.e. >1 d. The origin of these changes was proposed to be linked to large-scale structures in the wind of ζ Pup, but further characterization of the variability at high energies was needed to investigate this scenario. Aims. Since the previous pap… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

1
11
0

Year Published

2018
2018
2024
2024

Publication Types

Select...
6
2

Relationship

3
5

Authors

Journals

citations
Cited by 17 publications
(12 citation statements)
references
References 38 publications
1
11
0
Order By: Relevance
“…Following recommendations of the XRT team for such bright sources (see also Nazé et al 2018), the spectral fitting Bjorkman et al (2002). The maps correspond to a slice at v z = − 10 km s −1 , the mean value in RV of the system; values of +10 or 0 km s −1 provide similar results, however.…”
Section: Spectral Fittingmentioning
confidence: 91%
“…Following recommendations of the XRT team for such bright sources (see also Nazé et al 2018), the spectral fitting Bjorkman et al (2002). The maps correspond to a slice at v z = − 10 km s −1 , the mean value in RV of the system; values of +10 or 0 km s −1 provide similar results, however.…”
Section: Spectral Fittingmentioning
confidence: 91%
“…Hence the presence of CIRs in Schulte 12 would not be a surprising occurrence. In this context, several cases of rotational modulation of the X-ray flux of O-stars have been reported in recent years and were attributed to such largescale structures (Oskinova et al 2001;Nazé et al 2013Nazé et al , 2018bMassa et al 2014;Rauw et al 2015b). However, their variation timescales are shorter (1.8-4.2 d) than for Schulte 12 and the peak-to-peak amplitude of their modulations is ∼10% of the mean flux, which is much smaller than for Schulte 12.…”
Section: The X-ray Clockmentioning
confidence: 94%
“…XMM shows variability for ζ Pup on a timescale of days in the total band, which may reflect the presence of CIRs (Nazé et al 2018. Temporal variation in the X-ray emission from hot stars might also be expected due to the growth and fading of shocks.…”
Section: X-ray Variabilitymentioning
confidence: 94%
“…XMM has long used ζ Pup as a reference target, so 18 years of observations are available from this spacecraft. These observations have been extensively analyzed in Nazé et al (2012), Nazé et al (2013), Hervé et al (2013), and Nazé et al (2018). One early Chandra HETG spectrum with a 67 kilosecond exposure is also currently available (Cassinelli et al 2001).…”
Section: Introduction: Deep Hetg Spectrum Of ζ Pup and Multi-wavelengmentioning
confidence: 99%