Abstract
We present the results from our Suzaku observations of the Galactic black hole binary 4U 1630-47. 4U 1630-47 was observed in the very high state (VHS) during the 2012 September-October outburst. The inner disk appears slightly truncated by comparison with a previous high/soft state (HSS) of this source, even by taking into account energetic coupling between the disk and corona. The spectra do not show the Doppler-shifted emission lines indicating baryonic jets that were seen four days previously in an XMM-Newton observation, despite the source being in a similar state. There are no significant absorption lines from highly ionized iron ions. We also observed 4U 1630-47 in the HSS simultaneously with Suzaku and NuSTAR in an early epoch of the 2015 outburst. All Suzaku spectra in the HSS show variable iron-K absorption line features. We find that the ionization state of the disk wind rapidly increased when the continuum showed significant spectral hardening. This behavior is consistent with that expected from a thermally driven wind.
| Original language | English |
|---|---|
| Pages (from-to) | 467-472 |
| Number of pages | 6 |
| Journal | Astronomische Nachrichten |
| Volume | 337 |
| Issue number | 4-5 |
| DOIs | |
| Publication status | Published - 2016 May 1 |
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Keywords
- Accretion, accretion disks
- Black hole physics
- X-rays: binaries
- X-rays: individuals (4U 1630-47)
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
Cite this
Broadband X-ray study of the galactic black hole binary 4U 1630-47 with Suzaku. / Hori, T.; Ueda, Y.; Done, C.; Shidatsu, M.; Kawamuro, T.; Kubota, Aya; Nakahira, S.
In: Astronomische Nachrichten, Vol. 337, No. 4-5, 01.05.2016, p. 467-472.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Broadband X-ray study of the galactic black hole binary 4U 1630-47 with Suzaku
AU - Hori, T.
AU - Ueda, Y.
AU - Done, C.
AU - Shidatsu, M.
AU - Kawamuro, T.
AU - Kubota, Aya
AU - Nakahira, S.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - We present the results from our Suzaku observations of the Galactic black hole binary 4U 1630-47. 4U 1630-47 was observed in the very high state (VHS) during the 2012 September-October outburst. The inner disk appears slightly truncated by comparison with a previous high/soft state (HSS) of this source, even by taking into account energetic coupling between the disk and corona. The spectra do not show the Doppler-shifted emission lines indicating baryonic jets that were seen four days previously in an XMM-Newton observation, despite the source being in a similar state. There are no significant absorption lines from highly ionized iron ions. We also observed 4U 1630-47 in the HSS simultaneously with Suzaku and NuSTAR in an early epoch of the 2015 outburst. All Suzaku spectra in the HSS show variable iron-K absorption line features. We find that the ionization state of the disk wind rapidly increased when the continuum showed significant spectral hardening. This behavior is consistent with that expected from a thermally driven wind.
AB - We present the results from our Suzaku observations of the Galactic black hole binary 4U 1630-47. 4U 1630-47 was observed in the very high state (VHS) during the 2012 September-October outburst. The inner disk appears slightly truncated by comparison with a previous high/soft state (HSS) of this source, even by taking into account energetic coupling between the disk and corona. The spectra do not show the Doppler-shifted emission lines indicating baryonic jets that were seen four days previously in an XMM-Newton observation, despite the source being in a similar state. There are no significant absorption lines from highly ionized iron ions. We also observed 4U 1630-47 in the HSS simultaneously with Suzaku and NuSTAR in an early epoch of the 2015 outburst. All Suzaku spectra in the HSS show variable iron-K absorption line features. We find that the ionization state of the disk wind rapidly increased when the continuum showed significant spectral hardening. This behavior is consistent with that expected from a thermally driven wind.
KW - Accretion, accretion disks
KW - Black hole physics
KW - X-rays: binaries
KW - X-rays: individuals (4U 1630-47)
UR - http://www.scopus.com/inward/record.url?scp=84964780479&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84964780479&partnerID=8YFLogxK
U2 - 10.1002/asna.201612331
DO - 10.1002/asna.201612331
M3 - Article
AN - SCOPUS:84964780479
VL - 337
SP - 467
EP - 472
JO - Astronomische Nachrichten
JF - Astronomische Nachrichten
SN - 0004-6337
IS - 4-5
ER -