dc.contributor.author |
Raman, Gayathri |
|
dc.contributor.author |
Varun |
|
dc.contributor.author |
Pradhan, Pragati |
|
dc.contributor.author |
Kennea, Jamie |
|
dc.date.accessioned |
2024-02-02T09:23:46Z |
|
dc.date.available |
2024-02-02T09:23:46Z |
|
dc.date.issued |
2023-12 |
|
dc.identifier.uri |
https://doi.org/10.1093/mnras/stad2577 |
|
dc.identifier.uri |
http://localhost:8080/xmlui/handle/123456789/1418 |
|
dc.description.abstract |
We present the first set of broad-band spectral and timing studies of two transient X-ray pulsars, MXB 0656−072 and MAXI
J1409−619 using NuSTAR observations conducted during quiescence. Despite being captured at one of their lowest luminosity
states, both these targets show signs of ongoing low-level accretion. Results from the time-averaged spectral analysis indicate
for the first time, the presence of a strong soft power-law component along with thermal emission from the neutron star hotspots.
For both targets, the quiescent thermal X-ray emission is consistent with the deep crustal heating model. In MXB 0656−072,
we do not detect any pulsation or indication of a cyclotron line during quiescence. However, in MAXI J1409−619 we detect
strong pulsations at 502 s with a pulsed fraction of ∼66 per cent, which adds this pulsar to the list of a handful of quiescent-state
pulsating systems |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Monthly Notices of the Royal Astronomical Society |
en_US |
dc.relation.ispartofseries |
2025;mnras526-3262 |
|
dc.subject |
accretion, accretion discs |
en_US |
dc.subject |
pulsars: individual |
en_US |
dc.subject |
X-rays: binaries |
en_US |
dc.title |
Quiet, but not silent: uncovering quiescent state properties of two transient high-mass X-ray binaries |
en_US |
dc.type |
Article |
en_US |