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Table A.2.

Candidate cyclotron line sources: cyclotron line(s) claimed, but doubtful and/or not confirmed.

System Typec Pspin Porb Ecl. Ecyc Instr. of Ref.e Line Other
(s) (days) (keV) 1st Det. 1st Det. conf. Ref.e
GX 1+4 LMXBa 304? 138 No 34? INTEGRAL 167 No
″ ″ ″ 1161?
M51 ULX8f ULX No 4.5 Chandra 217 No 218
LMC X-4 HMXBb 1.4 13.5 No 100? BeppoSAX 171 No
0052-723 (XTE J) Be XRB 4.78 ? 10.2 NuSTAR 226 No 227
0114+650 (3A,2S) B SG XRB 9520 11.6 No 22, 44? INTh 37 No 38,199–202
″ ″ ″ super-orbit: 30.75 d
054134.7-682550 HMXB 80? 62 No 10?,20? RXTE 165 No 166
" " " (XMMU)
1657-415 (OAO) HMXB 10.4 38 Yes 36? BeppoSAX 168 No 169
1700-37 (4U) HMXB 3.4 ? Yes 39? Suzaku 170 No
1806-20 (SGR)f SGR 7.47 No ∼5 RXTE 219 No 220
1810-197 (XTE J)f AXP trans 5.54 No 1.1 Chandra/XMM 221 Yes 222
1843+009 (GS) Be XRB ? 29.5 No 20? Ginga 163 No 164
1901+03 (4U) Be trans 2.76 22.6 No 10? RXTE 140 No
1908+075 (4U) HMXB 604 4.4 ? 44? Suzaku 21 No 173,174,186
2030+375 (EXO) Be trans 41.4 46 No 36/63? RXTE/INTd 89/90 No
2103.5+4545 (SAX J) Be XRB 359 12.7 No 12? NuSTAR 207 No 208–211
2206+54 (4U) HMXB 5570 9.57 No 29–35 RXTE/SAXf 34/35 Y/N 35,119,188
″ ″ ″ 19.25? INTEGRAL 175 178,179

Notes.

(a)

Low mass X-ray binary;

(b)

High mass X-ray binary;

(c)

a more specific definition of Type is given in Table A.3;

(d)

read: INTEGRAL;

(e)

References: see Table A.1;

(f)

candidates for a possible proton cyclotron line (see also Sect. 8).

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