Spectral and timing properties of the accreting millisecond X-ray pulsar IGR J17498-2921 during its 2023 outburst

被引：0

作者：

Illiano, G. ^{[1
,2
,3
]}

Papitto, A. ^{[1
]}

Marino, A. ^{[4
,5
]}

Strohmayer, T. E. ^{[6
,7
]}

Sanna, A. ^{[8
]}

Di Salvo, T. ^{[9
]}

La Placa, R. ^{[1
]}

Ambrosino, F. ^{[1
]}

Zanon, A. Miraval ^{[10
]}

Zelati, F. Coti ^{[4
,5
,11
]}

Ballocco, C. ^{[1
,3
]}

Malacaria, C. ^{[1
]}

Ghedina, A. ^{[12
]}

Cecconi, M. ^{[12
]}

Gonzales, M. ^{[12
]}

Leone, F. ^{[13
,14
]}

机构：

[1] INAF Osservatorio Astron Roma, Via Frascati 33, I-00076 Monte Porzio Catone, RM, Italy

[2] Tor Vergata Univ Rome, Via Ric Sci 1, I-00133 Rome, Italy

[3] Sapienza Univ Roma, Piazzale Aldo Moro 5, I-00185 Rome, Italy

[4] CSIC, Inst Space Sci ICE, Campus UAB,Carrer Can Magrans S-N, E-08193 Barcelona, Spain

[5] Inst Estudis Espacials Catalunya IEEC, E-08860 Castelldefels, Barcelona, Spain

[6] NASA Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA

[7] NASA Goddard Space Flight Ctr, Joint Space Sci Inst, Greenbelt, MD 20771 USA

[8] Univ Cagliari, Dipartimento Fis, SP Monserrato Sestu Km 0-7, I-09042 Monserrato, Italy

[9] Univ Palermo, Dipartimento Fis & Chim, Via Archirafi 36, I-90123 Palermo, Italy

[10] ASI Agenzia Spaziale Italiana, Via Politecn Snc, I-00133 Rome, Italy

[11] INAF Osservatorio Astron Brera, Via Bianchi 46, I-23807 Merate, LC, Italy

[12] Fdn Galileo Galilei INAF, La Palma, Spain

[13] Univ Catania, Dipartimento Fis & Astron, Sez Astrofis, Via S Sofia 78, I-95123 Catania, Italy

[14] INAF Osservatorio Astrofis Catania, Via S Sofia 78, I-95123 Catania, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2024年 / 691卷

基金：

欧洲研究理事会;

关键词：

accretion; accretion disks; stars: neutron; pulsars: individual: IGR J17498-2921; X-rays: binaries; SAX J1808.4-3658; BROAD-BAND; XMM-NEWTON; SRGA J144459.2-604207; MAGNETIC-FIELDS; HOT-SPOTS; SPIN-DOWN; REFLECTION; DISCOVERY; SPECTROSCOPY;

D O I：

10.1051/0004-6361/202451703

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a comprehensive study of the spectral properties of the accreting millisecond X-ray pulsar IGR J17498-2921 during its 2023 outburst. Similar to other accreting millisecond X-ray pulsars, the broadband spectral emission observed quasi-simultaneously by NICER and NuSTAR is well described by an absorbed Comptonized emission with an electron temperature of similar to 17 keV plus a disk reflection component. The broadening of the disk reflection spectral features, such as a prominent iron emission line at 6.4-6.7 keV, is consistent with the relativistic motion of matter in a disk truncated at similar to 21 R-g from the source, near the Keplerian corotation radius. From the high-cadence monitoring data obtained with NICER, we observed that the evolution of the photon index and the temperature of seed photons tracks variations in the X-ray flux. This is particularly evident close to a sudden similar to-0.25 cycle jump in the pulse phase, which occurs immediately following an X-ray flux flare and a drop in the pulse amplitude below the 3 sigma detection threshold. We also report on the non-detection of optical pulsations with TNG/SiFAP2 from the highly absorbed optical counterpart.

引用

页数：14

共 50 条

[1] Spectral and timing properties of the accreting millisecond X-ray pulsar IGR J17498-2921 during its 2023 outburst
Illiano, G.
Papitto, A.
Marino, A.
Strohmayer, T. E.
Sanna, A.
Di Salvo, T.
La Placa, R.
Ambrosino, F.
Miraval Zanon, A.
Coti Zelati, F.
Ballocco, C.
Malacaria, C.
Ghedina, A.
Cecconi, M.
Gonzales, M.
Leone, F.
ASTRONOMY & ASTROPHYSICS, 2024, 691
[2] Spectral and timing properties of the accreting X-ray millisecond pulsar IGR J17498-2921
Falanga, M.
Kuiper, L.
Poutanen, J.
Galloway, D. K.
Bozzo, E.
Goldwurm, A.
Hermsen, W.
Stella, L.
ASTRONOMY & ASTROPHYSICS, 2012, 545
[3] Broadband X-ray spectral and timing properties of the accreting millisecond X-ray pulsar IGR J17498-2921 during the 2023 outburst
Li, Z. S.
Kuiper, L.
Pan, Y. Y.
Falanga, M.
Poutanen, J.
Chen, Y. P.
Xu, R. X.
Ge, M. Y.
Huang, Y.
Song, L. M.
Zhang, S.
Lu, F. J.
Zhang, S. N.
ASTRONOMY & ASTROPHYSICS, 2024, 691
[4] Relativistic X-ray reflection from the accreting millisecond X-ray pulsar IGR J17498-2921
Bhattacharya, Mahasweta
Mondal, Aditya S.
Pahari, Mayukh
Raychaudhuri, Biplab
Ghosh, Rohit
Dewangan, Gulab C.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2024, 534 (01) : 634 - 644
[5] The discovery of the 401 Hz accreting millisecond pulsar IGR J17498-2921 in a 3.8 h orbit
Papitto, A.
Bozzo, E.
Ferrigno, C.
Belloni, T.
Burderi, L.
Di Salvo, T.
Riggio, A.
D'Ai, A.
Iaria, R.
ASTRONOMY & ASTROPHYSICS, 2011, 535
[6] Spectral and timing properties of the accreting X-ray millisecond pulsar IGR J17511-3057
Falanga, M.
Kuiper, L.
Poutanen, J.
Galloway, D. K.
Bonning, E. W.
Bozzo, E.
Goldwurm, A.
Hermsen, W.
Stella, L.
ASTRONOMY & ASTROPHYSICS, 2011, 529
[7] Thermonuclear X-ray bursts from the 401-Hz accreting pulsar IGR J17498-2921: indication of burning in confined regions
Chakraborty, Manoneeta
Bhattacharyya, Sudip
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2012, 422 (03) : 2351 - 2356
[8] Radio and X-ray monitoring of the accreting millisecond X-ray pulsar IGR J17591-2342 in outburst
Gusinskaia, N., V
Russell, T. D.
Hessels, J. W. T.
Bogdanov, S.
Degenaar, N.
Deller, A. T.
van den Eijnden, J.
Jaodand, A. D.
Miller-Jones, J. C. A.
Wijnands, R.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 492 (01) : 1091 - 1101
[9] Swift monitoring of the new accreting millisecond X-ray pulsar IGR J17511-3057 in outburst
Bozzo, E.
Ferrigno, C.
Falanga, M.
Campana, S.
Kennea, J. A.
Papitto, A.
ASTRONOMY & ASTROPHYSICS, 2010, 509
[10] IGR J17062-6143 Is an Accreting Millisecond X-Ray Pulsar
Strohmayer, Tod
Keek, Laurens
ASTROPHYSICAL JOURNAL LETTERS, 2017, 836 (02)

← 1 2 3 4 5 →