Discovery of a Pulse-phase-transient Cyclotron Line in the X-Ray pulsar GRO J2058+42

被引：30
作者：
Molkov, S. [1 ]
Lutovinov, A. [1 ,2 ]
Tsygankov, S. [1 ,3 ]
Mereminskiy, I. [1 ]
Mushtukov, A. [1 ,4 ,5 ]
机构：
[1] Russian Acad Sci, Space Res Inst, Profsoyuznaya 84-32, Moscow 117997, Russia
[2] Moscow Inst Phys & Technol, Dolgoprudnyi 141701, Moscow Region, Russia
[3] Univ Turku, Dept Phys & Astron, FI-20014 Turku, Finland
[4] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands
[5] Russian Acad Sci, Pulkovo Observ, St Petersburg 196140, Russia
来源：
ASTROPHYSICAL JOURNAL LETTERS | 2019年 / 883卷 / 01期
基金：
俄罗斯科学基金会;
关键词：
NEUTRON-STARS; SPECTROSCOPY; LUMINOSITY; EMISSION; COLUMNS; SPECTRA; MODELS;
D O I：
10.3847/2041-8213/ab3e4d
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the discovery of absorption features in the X-ray spectrum of the transient X-ray pulsar GRO J2058+42. The features are detected around similar to 10, similar to 20, and similar to 30 keV in both NuSTAR observations carried out during the source type II outburst in spring 2019. The most intriguing property is that the deficit of photons around these energies is registered only in the narrow phase interval covering around 10% of the pulsar spin period. We interpret these absorption lines as a cyclotron resonant scattering line (fundamental) and two higher harmonics. The measured energy allow us to estimate the magnetic field strength of the neutron star as similar to 10(12) G.
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页数：6
相关论文
共 49 条
  • [1] Bartalini Saverio, 2019, 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), DOI 10.1109/CLEOE-EQEC.2019.8871850
  • [2] LIMITING LUMINOSITY OF ACCRETING NEUTRON STARS WITH MAGNETIC-FIELDS
    BASKO, MM
    SUNYAEV, RA
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1976, 175 (02) : 395 - 417
  • [3] Observations of accreting pulsars
    Bildsten, L
    Chakrabarty, D
    Chiu, J
    Finger, MH
    Koh, DT
    Nelson, RW
    Prince, TA
    Rubin, BC
    Scott, DM
    Stollberg, M
    Vaughan, BA
    Wilson, CA
    Wilson, RB
    [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1997, 113 (02) : 367 - 408
  • [4] DISCOVERY OF A STRONGLY PHASE-VARIABLE SPECTRAL FEATURE IN THE ISOLATED NEUTRON STAR RX J0720.4-3125
    Borghese, A.
    Rea, N.
    Coti Zelati, F.
    Tiengo, A.
    Turolla, R.
    [J]. ASTROPHYSICAL JOURNAL LETTERS, 2015, 807 (01)
  • [5] The 0.1-100 keV spectrum of Centaurus X-3: Pulse phase spectroscopy of the cyclotron line and magnetic field structure
    Burderi, L
    Di Salvo, T
    Robba, NR
    La Barbera, A
    Guainazzi, M
    [J]. ASTROPHYSICAL JOURNAL, 2000, 530 (01) : 429 - 440
  • [6] The Swift X-ray telescope
    Burrows, DN
    Hill, JE
    Nousek, JA
    Kennea, JA
    Wells, A
    Osborne, JP
    Abbey, AF
    Beardmore, A
    Mukerjee, K
    Short, ADT
    Chincarini, G
    Campana, S
    Citterio, O
    Moretti, A
    Pagani, C
    Tagliaferri, G
    Giommi, P
    Capalbi, M
    Tamburelli, F
    Angelini, L
    Cusumano, G
    Bräuninger, HW
    Burkert, W
    Hartner, GD
    [J]. SPACE SCIENCE REVIEWS, 2005, 120 (3-4) : 165 - 195
  • [7] Methods and results of an automatic analysis of a complete sample of Swift-XRT observations of GRBs
    Evans, P. A.
    Beardmore, A. P.
    Page, K. L.
    Osborne, J. P.
    O'Brien, P. T.
    Willingale, R.
    Starling, R. L. C.
    Burrows, D. N.
    Godet, O.
    Vetere, L.
    Racusin, J.
    Goad, M. R.
    Wiersema, K.
    Angelini, L.
    Capalbi, M.
    Chincarini, G.
    Gehrels, N.
    Kennea, J. A.
    Margutti, R.
    Morris, D. C.
    Mountford, C. J.
    Pagani, C.
    Perri, M.
    Romano, P.
    Tanvir, N.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2009, 397 (03) : 1177 - 1201
  • [8] Hard spectra of X-ray pulsars from INTEGRAL data
    Filippova, EV
    Tsygankov, SS
    Lutovinov, AA
    Sunyaev, RA
    [J]. ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 2005, 31 (11): : 729 - 747
  • [9] The Swift gamma-ray burst mission
    Gehrels, N
    Chincarini, G
    Giommi, P
    Mason, KO
    Nousek, JA
    Wells, AA
    White, NE
    Barthelmy, SD
    Burrows, DN
    Cominsky, LR
    Hurley, KC
    Marshall, FE
    Mészáros, P
    Roming, PWA
    Angelini, L
    Barbier, LM
    Belloni, T
    Campana, S
    Caraveo, PA
    Chester, MM
    Citterio, O
    Cline, TL
    Cropper, MS
    Cummings, JR
    Dean, AJ
    Feigelson, ED
    Fenimore, EE
    Frail, DA
    Fruchter, AS
    Garmire, GP
    Gendreau, K
    Ghisellini, G
    Greiner, J
    Hill, JE
    Hunsberger, SD
    Krimm, HA
    Kulkarni, SR
    Kumar, P
    Lebrun, F
    Lloyd-Ronning, NM
    Markwardt, CB
    Mattson, BJ
    Mushotzky, RF
    Norris, JP
    Osborne, J
    Paczynski, B
    Palmer, DM
    Park, HS
    Parsons, AM
    Paul, J
    [J]. ASTROPHYSICAL JOURNAL, 2004, 611 (02) : 1005 - 1020
  • [10] Grove J.E., 1995, INT ASTRON UNION CIR, V6239, P2
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