Discovery of X-ray pulsations from a massive star

被引：0

作者：

Lidia M. Oskinova

Yael Nazé

Helge Todt

David P. Huenemoerder

Richard Ignace

Swetlana Hubrig

Wolf-Rainer Hamann

机构：

[1] Institute of Physics and Astronomy,Department A.G.O.

[2] University of Potsdam,Department of Physics and Astronomy

[3] FNRS,undefined

[4] GAPHE,undefined

[5] University of Liège,undefined

[6] Massachusetts Institute of Technology,undefined

[7] Kavli Institute for Astrophysics and Space Research,undefined

[8] 70 Vassar Street Cambridge,undefined

[9] Massachusetts 02139,undefined

[10] USA,undefined

[11] East Tennessee State University,undefined

[12] Leibniz Institute for Astrophysics Potsdam (AIP),undefined

[13] An der Sternwarte 16,undefined

来源：

Nature Communications | / 5卷

关键词：

D O I：

暂无

中图分类号：

学科分类号：

摘要：

X-ray emission from stars much more massive than the Sun was discovered only 35 years ago. Such stars drive fast stellar winds where shocks can develop, and it is commonly assumed that the X-rays emerge from the shock-heated plasma. Many massive stars additionally pulsate. However, hitherto it was neither theoretically predicted nor observed that these pulsations would affect their X-ray emission. All X-ray pulsars known so far are associated with degenerate objects, either neutron stars or white dwarfs. Here we report the discovery of pulsating X-rays from a non-degenerate object, the massive B-type star ξ1 CMa. This star is a variable of β Cep-type and has a strong magnetic field. Our observations with the X-ray Multi-Mirror (XMM-Newton) telescope reveal X-ray pulsations with the same period as the fundamental stellar oscillations. This discovery challenges our understanding of stellar winds from massive stars, their X-ray emission and their magnetism.

引用

共 50 条

[21] Discovery of X-ray pulsations in the Be/X-ray binary LS 992/RX J0812.4-3114
Reig, P
Roche, P
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 306 (01) : 95 - 99
[22] Rossi X-Ray Timing Explorer Discovery of Coherent Millisecond Pulsations During an X-Ray Burst From KS 1731 - 260
Smith, D. A.
Morgan, E. H.
Bradt, H.
Astrophysical Journal, 479 (02):
[23] Discovery of X-ray burst oscillations from a neutron star X-ray transient in the globular cluster NGC 6440
Kaaret, P
in't Zand, JJM
Heise, J
Tomsick, JA
ASTROPHYSICAL JOURNAL, 2003, 598 (01): : 481 - 485
[24] DISCOVERY OF X-RAY PULSATIONS FROM THE NEXT GEMINGA, PSR J1836+5925
Lin, L. C. C.
Hui, C. Y.
Li, K. T.
Takata, J.
Hu, C. P.
Kong, A. K. H.
Yen, D. C. C.
Chou, Y.
ASTROPHYSICAL JOURNAL LETTERS, 2014, 793 (01)
[25] Discovery of 442 Hz pulsations from an X-ray source in the globular cluster NGC 6440
Gavriil, Fotis P.
Strohmayer, Tod E.
Swank, Jean H.
Markwardt, Craig B.
ASTROPHYSICAL JOURNAL, 2007, 669 (01): : L29 - L32
[26] DISCOVERY OF X-RAY PULSATIONS FROM THE INTEGRAL SOURCE IGR J11014-6103
Halpern, J. P.
Tomsick, J. A.
Gotthelf, E. V.
Camilo, F.
Ng, C. -Y.
Bodaghee, A.
Rodriguez, J.
Chaty, S.
Rahoui, F.
ASTROPHYSICAL JOURNAL LETTERS, 2014, 795 (02)
[27] MODELING BROADBAND X-RAY ABSORPTION OF MASSIVE STAR WINDS
Leutenegger, Maurice A.
Cohen, David H.
Zsargo, Janos
Martell, Erin M.
MacArthur, James P.
Owocki, Stanley P.
Gagne, Marc
Hillier, D. John
ASTROPHYSICAL JOURNAL, 2010, 719 (02): : 1767 - 1774
[28] Discovery of 13 s X-ray pulsations from the hydrogen depleted subdwarf O6 star binary HD49798
Israel, G.L.
Stella, L.
Angelini, L.
White, N.E.
Kallman, T.R.
Giommi, P.
Treves, A.
Advances in Space Research, 22 (07): : 1035 - 1038
[29] The discovery of 13 s X-ray pulsations from the hydrogen depleted subdwarf O6 star binary HD49798
Israel, GL
Stella, L
Angelini, L
White, NE
Kallman, TR
Giommi, P
Treves, A
X-RAY TIMING AND COSMIC GAMMA RAY BURSTS, 1998, 22 (07): : 1035 - 1038
[30] X-ray pulsations from the central source in Puppis A
Pavlov, GG
Zavlin, VE
Trümper, J
ASTROPHYSICAL JOURNAL, 1999, 511 (01): : L45 - L48

← 1 2 3 4 5 →