List of accreting X-ray pulsars

List of accreting X-ray pulsars

Source	RA	Dec	Distance (kpc)	Pspin (s)	Porbit (d)	Type	CRSF?	Persistent?	Notes
CXOU J005047.9-731817	12.699963	-73.305018	60	292		BeXRB?		T	aka SXP 292
RX J0059.2-7138	14.803112	-71.645828	60	2.76	82	BeXRB?	C?	T	aka SXP 2.76
RX J0101.8-7223	15.467910	-72.392796	12.3 (+2.0, -1.7)	175		BeXRB		T
SMC X-1	19.271456	-73.443343	60	0.71	3.892	SG		P	eclipsing
3A 0114+650	19.511228	65.291623	4.5	9828	11.6	SG		P	30.7 d superorbital modulation
4U 0115+634	19.633194	63.742522	7.2 (+1.5, -1.1)	3.6	24.3	BeXRB	C	T	5 or more lines
SXP 265	23.214439	-74.429258	60	264.52		BeXRB		PT	SMC region, persistent low luminosity, one type I outburst
RX J0146.9+6121	26.750876	61.356573	2.50 (+0.22, -0.19)	1412	330	BeXRB		T	a.k.a. V* V831 Cas
IGR J01583+6713	29.577033	67.223185	7.4 (+1.1, -0.9)	469		BeXRB	C?	T	controversial claim of CRSF features
Swift J0243.6+6124	40.918432	61.434378	6.9 (+1.6, -1.2)	9.86	27.587	BeXRB		T	Galactic ULX?
V 0332+53	53.749630	53.173140	5.1 (+1.1, -0.8)	4.37	34.25	BeXRB	C	T	multiple lines
X Per	58.846151	31.045836	0.79 +/- 0.04	830	250.3	BeXRB		P	magnetar?
RX J0440.9+4431	70.247207	44.530344	3.2 (+0.7, -0.5)	203	155	BeXRB		P	a.k.a. LS V+44 17, persistent, but with outbursts
LXP 169	76.981153	-68.418135	45	168.8	24.3	BeXRB		T?	NS eclipsing companion, LMC source
Swift J053041.9-665426	82.675788	-66.907566	45	28.78		BeXRB		T?	LMC source
LMC X-4	83.206501	-66.370332	45	13.5	1.4	SG		P	superorbital variation ~30 d
1A 0535+26	84.727393	26.315776	2.13 (+0.26, -0.21)	103	111.1	BeXRB	C	T
SAX J0635.2+0533	98.822528	5.553870	1.6 (+2.2, -0.8)	0.0338		BeXRB		T	low luminosity
MXB 0656-07	104.572030	-7.209774	5.1 (+1.4, -1.0)	160.4	101.2	BeXRB	C		a.k.a XTE J0658-073
3A 0726-260	112.223241	-26.108019	9.5 (+3.1, -2.2)	103.2	34.5	BeXRB		T
RX J0812.4-3114	123.118149	-31.247807	6.8 (+1.2, -1.0)	31.9	80	BeXRB		T
GS 0834-430	128.981072	-43.185598	5.5 (+2.5, -1.7)	12.3	105.8	BeXRB		T
Vela X-1	135.528560	-40.554654	2.42 (+0.19, -0.17)	283	8.96	SG	C	P	eclipsing
GRO J1008-57	152.439620	-58.292035	5	93.7	249.48	BeXRB	C?	T	outbursts predicted precisely
4U 1036-56	159.397094	-56.798840	5.0 (+1.1, -0.8)	862		BeXRB		P?	a.k.a. RX J1037.5-564/LS 1698
1A 1118-616	170.238174	-61.916707	2.93 (+0.26, -0.22)	407	24	BeXRB	C	T
Cen X-3	170.312856	-60.623776	6.4 (+1.4, -1.1)	4.8	2.09	SG	C	P	disk-fed HMXB
1E1145.1-6141	176.868942	-61.953720	9.1 (+2.2, -1.6)	297	14.4	SG			(V* V830 Cen) varying luminosity states
4U 1145-619	177.000032	-62.206910	2.23 (+0.20, -0.17)	292	187.5	BeXRB		PT
GX 301-2	186.656453	-62.770359	3.5 (+0.6, -0.5)	686	41.5	SG	C	P	very massive companion, strong orbital variability
3A 1239-599	190.508997	-60.200951	2.9 (+2.4, -1.3)	191
GX 304-1	195.321198	-61.601845	2.01 (+0.15, -0.13)	272	132.2	BeXRB	C	T	Strong spectral parameter variations
SAX J1324.4-6200	201.108853	-62.016515	3.5 (+2.6, -1.7)	171	22	BeXRB?
2S 1417-624	215.303896	-62.698168	3.8 (+2.8, -1.8)	17.6	42.12	BeXRB		T
SAX J1452.8-5949	223.207002	-59.820983	3.0 (+2.6, -1.5)	437		BeXRB?
4U 1538-52	235.597300	-52.386011	6.6 (+2.2, -1.5)	526	3.72	SG	C	P
2S 1553-542	239.452345	-54.416113	3.5 (+2.6, -1.5)	9.3	29.56	BeXRB?		P	Occasional outbursts
IGR J16194-2810	244.888926	-28.127773	2.3 (+0.8, -0.5)			SyXB
Swift J1626.6-5156	246.652146	-51.941848	9.8 (+3.2, -2.4)	15.4	132.9	BeXRB	C	T	strong flares
IGR J16318-4848	247.951259	-48.816876	5.2 (+2.8, -1.9)			SG		P	super absorbed source
IGR J16320-4751	248.009669	-47.874785	1.3 (+0.6, -0.4)	1309	8.986	SG		P	aka 2FGL J1632.4-4753c
4U 1626-67	248.069509	-67.461207	3.5 (+2.3, -1.3)	7.7	0.029	WD?	C		Torque reversals. Only UCXB with a CRSF.
IGR J16358-4726	249.124997	-47.623903	7	5880		SyXB
IGR J16393-4643	249.772382	-46.704006	4.0 (+2.7, -1.7)	912	3.7	SyXB			a.k.a. AX J1639.0-4642
IGR J16465-4507	251.646902	-45.117960	2.7 (+0.5, -0.4)	228	30.243			P	aka 2MASS J16463526-4507045
Her X-1	254.457539	35.342324	5.0 (+0.8, -0.6)	1.24	1.7	IMXB	C	P
AX J1700.1-4157	255.018132	-41.968217	3.4 (+2.6, -1.5)	715		BeXRB?
OAO 1657-415	255.202665	-41.654882	2.2 (+0.7, -0.5)	37.7	10.4	SG	C?	P	eclipsing
4U 1700-37	255.986566	-37.844121	1.75 (+0.24, -0.19)		3.4	SG		P	No pulsations, eclipsing source
4U 1700+24	256.643762	23.971820	0.536 +/- 0.010	404		SyXB
EXO 1722-363	261.296681	-36.284621	4.0 (+2.3, -1.3)		9.74	HMXB			a.k.a. IGR J17252–3616, heavily absorbed, eclipsing
GX 1+4	263.008955	-24.745600	7.6 (+4.3, -2.8)	170	1161	SyXB		P	Pulse period evolving rapidly
2XMM J174016.0-290337	265.067079	-29.060569	1.4 (+1.6, -0.5)	626		SyXB			a. k.a. AX_J1740.2-2903
GRO J1744-28	266.139419	-28.744480	1.3 (+1.2, -0.5)	0.47	11.8	LMXB		T	"Bursting Pulsar"
GRO J1750-27	267.291434	-26.639700		4.45	29.82	BeXRB?		P	a.k.a. AX J1749.1-2639
IGR J17544-2619	268.605299	-26.331274	2.7 (+0.5, -0.4)		4.93	SFXT?	C	T
SAX J1802.7-2017	270.665728	-20.286816	1.5 (+2.8, -0.7)	139.6	4.57	SG		P	a.k.a. IGR J18027-2016
1RXS J180431.1-273932	271.130284	-27.659214		494		SyXB
SAX J1808.4-3658	272.114166	-36.979379	5.1 (+4.3, -2.6)	0.0025	0.837	LMXB			a.k.a. V* V4580 Sgr, disk accretor(?)
Swift J1816.7-1613	274.176846	-16.222949	1.4 (+2.5, -0.7)	142.9	151	BeXRB?		T	ATel 6253 ATel 1457
IGR J18179-1621	274.467048	-16.359400		11.82			C?	T	ATel 3947 ATel 3949
AX J1820.5-1434	275.122921	-14.571809	8.2	152		?		?
3A 1822-371	276.445028	-37.105158	6.1 (+2.7, -1.6)	0.59	0.23	LMXB
Sct X-1	278.857602	-7.614004	7.5	112	111	SyXB
GS 1843+00	281.403474	0.863160	2.3 (+2.0, -1.0)					T
2S 1845-024	282.075590	-2.419729		94.8	242.2	BeXRB?		T	a.k.a. GS 1843-02
XTE J1855-026	283.876680	-2.604678	8.1 (+2.6, -1.8)	361	6.1	SG
XTE J1858+034	284.678379	3.439739	1.55 (+0.28, -0.21)		221			T
XTE J1859+083	284.778177	8.246352	2.7 (+2.4, -1.5)	9.8				T	ATel 7037
4U 1901+03	285.903524	3.190426	2.2 (+2.2, -1.3)					T
XTE J1906+090	286.197769	9.044912	2.8 (+2.4, -1.4)	89.2		BeXRB?
4U 1907+09	287.408533	9.829777	4.4 (+2.1, -1.3)	442	8.37	SG	C	P
4U 1909+07	287.700872	7.597657	2.6 (+2.3, -1.4)	604	4.4	SG		P
IGR J19140+0951	288.517606	9.882865	2.8 (+2.4, -1.4)		13.55	HMXB		?
IGR J19149+1036	288.728311	10.612245	3.0 (+2.5, -1.6)		22.25	SG	C	P	very close to GRS1915
IGR J19294+1816	292.482927	18.310607	2.9 (+2.5, -1.5)	12.5	116	BeXRB?		T
XTE J1946+274	296.413975	27.365400	12.6 (+3.9, -2.9)	15.8	169.2	BeXRB	C	T
KS 1947+300	297.397839	30.208809	15.2 (+3.7, -2.8)	18.8	40.4	BeXRB	C	T
3A 1954+319	298.926399	32.096931	3.3 (+1.0, -0.7)	19100		SyXB
EXO 2030+375	308.063627	37.637433	3.6 (+1.4, -0.9)	41.8	46.03	BeXRB		T	regular outbursts
GRO J2058+42	314.698059	41.776980	8.0 (+1.2, -1.0)					T
SAX J2103.5+4545	315.898770	45.751533	6.4 (+0.9, -0.7)	359	12.7	BeXRB		T
IGR J21343+4738	323.584869	47.633380	7.8 (+1.4, -1.1)	320.35	20.85	BeXRB		P?	Varying levels of activity
Cep X-4	324.877853	56.986219	10.2 (+2.2, -1.6)	66.32	20.85	BeXRB	C	T
4U 2206+54	331.984289	54.518433	3.3 +/- 0.4	5560	19.25	SG		P	magnetar?
SAX J2239.3+6116	339.836831	61.274053	8.0 (+1.4, -1.1)	1247	262	BeXRB		T
IGR J22534+6243	343.479672	62.726882	8.1 (+2.3, -1.6)	46.7		Be?		P?

Distances with uncertainties are from Gaia data release 2, as described by Bailer-Jones et al. (see this paper and this webpage). Note that these should be taken with a grain of salt and are dependent on the priors selected by Bailer-Jones et al. - as an example, the Magellanic cloud sources show up in Gaia DR2 as having distances of ~7 kpc, when they are actually 45 or 60 kpc away.

Location in the Galaxy

The figure below displays the position of accreting X-ray pulsars in the Galaxy as far as known at this moment. Click on the figure for a larger version. Labels indicate the ordinal number in the first column of the table. Uncertainties in the distances are not indicated. Empty symbols represent sources for which there is no distance info in the literature; they have been artificially set to a distance of 7.6 kpc. HEASARC source class identifiers are also given. The spiral arms are from Vallée et al. (2008). Figure and data provided by Arash Bodaghee, SSL, UC Berkeley.

#	Source	Class	Dist. [kpc]		#	Source	Class	Dist. [kpc]
1	GRO_J1744-28	1490	8.5		33	3A_0656-072	1316	3.9
2	GX_1+4	1410	4.5		34	3A_0726-260	1310	6.1
3	GRO_J1750-27	1316	?		35	RX_J0812.4-3114	1316	8.8
4	1RXS_J180431.1-273932	1410	?		36	Ginga_0834-430	1316	4
5	AX_J1820.5-1434	1316	8.2		37	Vela_X-1	1213	1.4
6	XTE_J1855-026	1213	10		38	LMC_X-4	1210	55
7	Sct_X-1	1116	7		39	GRO_J1008-57	1316	5
8	Ginga_1843+009	1316	12.5		40	4U_1036-56	1316	5
9	4U_1901+03	1366	?		41	Cen_X-3	1263	10
10	4U_1909+07	1210	7		42	1A_1118-615	1366	5
11	XTE_J1906+090	1316	10		43	1E_1145.1-6141	1210	8.5
12	H_1907+097	1216	5		44	H_1145-619	1316	3.1
13	4U_1700+24	1400	0.42		45	GX_301-2	1211	4.1
14	IGR_J19294+1816	1316	?		46	SMC_X-1	1213	60
15	Her_X-1	1413	6.56		47	3A_1239-599	1110	?
16	XTE_J1946+274	1316	9.5		48	RX_J0101.8-7223	1310	60
17	KS_1947+300	1316	9.5		49	GX_304-1	1316	2.4
18	3A_1954+319	1416	1.7		50	SAX_J1324.4-6200	1310	10
19	EXO_2030+375	1366	7.1		51	H_1417-624	1316	6
20	GRO_J2058+42	1316	9.0		52	SAX_J1452.8-5949	1010	9
21	SAX_J2103.5+4545	1366	6.8		53	4U_1626-67	1410	9.0
22	Cep_X-4	1316	3.8		54	H_1538-522	1213	6.4
23	3A_2206+543	1260	2.6		55	SWIFT_J1626.6-5156	1366	?
24	3A_0114+650	1213	4.5		56	AX J1700.1-4157	9999	?
25	H_0115+634	1386	8		57	OAO_1657-415	1213	7.1
26	IGR_J01583+6713	1316	4		58	IGR_J16358-4726	1110	7
27	RX_J0146.9+6121	1310	2.3		59	IGR_J16393-4643	1210	10.6
28	V_0332+53	1366	7.5		60	IGR_J16194-2810	1400	3.7
29	RX_J0440.9+4431	1310	3.3		61	SAX_J1808.4-3658	1416	3.6
30	X_Per	1310	0.7		62	3A_1822-371	1419	2.5
31	1A_0535+262	1366	2		63	AX_J1740.2-2903	1410	?
32	SAX_J0635.2+0533	1310	5

Correlation between luminosity and CRSF energy

In recent years more and more sources have been observed at different luminosities, allowing us to find correlation between the luminosity and the cyclotron line energy. A summary of the current state of the observations can be found on this page: CRSF energy as function of luminosity

Assignments

Our collaboration has assigned one or two sources to each member to take care of, i.e., to put together the most important information and keep the page up to date in case new data are available or new papers are published. The list can only be accessed if logged in.