GBM Science GBM Pulsar Project

GBM-related pulsar publications from the Gamma-Ray Astronomy team are listed here.

 

GBM Accreting Pulsar Histories

For each source we plot the history of pulse frequency and pulsed flux measured using the Fermi Gamma-Ray Burst Monitor (GBM) NaI detectors. For these measurements we use the CTIME data which normally has 0.256 s time bins, and eight energy channels. Our analysis normally uses channels 1 (12-25 keV) and 2 (25-50 keV). The integration interval used varies from source to source, ranging from one to four days. For eclipsing systems each egress to ingress interval is divided into an integral number of equal parts, with no measurement made during the eclipse. The measured frequencies are barycentered. For sources where the binary orbit is known, the frequencies are corrected for the binary motion. The R.M.S. pulsed flux is given in the energy band in which the pulse search was made. This usually includes only the first and second harmonics. These results are preliminary. Please contact Mark Finger for further information.

Detected Persistent Pulsars
Source Name
& GBM link		 LII (deg) BII (deg) Period (s) Swift link RXTE link MAXI link Simbad link
GX 1+4 1.944.79 159.7 GX 1+4 gx1+4 GX 1+4 V* V2116 Oph
Her X-1 58.2037.50 1.24 Her X-1 herx1 Her X-1 V* HZ Her
Vela X-1 263.063.90 283.5 Vela X-1 velax1 Vela X-1 V* GP Vel
Cen X-3 292.100.30 4.80 Cen X-3 cenx3 Cen X-3 V* V779 Cen
GX 301-2 300.101.25 681.6 GX 301-2 gx301-2 GX 301-2 V* BP Cru
4U 1626-67 321.79-13.09 7.67 4U 1626-67 x1627-673 4U 1626-67 V* KZ TrA
4U 1538-52 327.422.16 525.0 H 1538-522 x1538-522 4U 1538-52 V* QV Nor
OAO 1657-415 344.400.31 37.1 EXO 1657-419 x1657-415 OAO 1657-415 OAO 1657-41

Detected Transient Pulsars
Source Name
& GBM Link		 LII (deg) BII (deg) Period (s) Swift link RXTE link MAXI link Simbad link
IGR J18179-1621 14.60-0.22 11.82 IGR J18179-1621
XTE J1858+034 36.82-0.06 219 XTE J1858+034 xtej1858+034 XTE J1858+034 [KRL2007b] 348
4U 1901+03 37.16-1.25 2.76 4U 1901+03 x1901+031 4U 1901+03 4U 1901+03
IGR J19294+1816 53.440.20 12.45 IGR J19294+1816 igrj19294+1816 IGR J19294+1816
XTE J1946+274 63.211.40 15.8 XTE J1946+274 x1942+274 XTE J1946+274 3A 1942+274
EXO 2030+375 77.15-1.24 41.33 EXO 2030+375 exo2030+375 EXO 2030+375 V* V2246 Cyg
SAX J2103.5+4545 87.13-0.68 358.61 SAX J2103.5+4545 saxj2103.5+4545 SAX J2103.5+4545 GSC 03588-00834
Cep X-4 99.013.31 66.32 Ginga 2138+56 cepx4 Cep X-4 V* V490 Cep
4U 0115+63 125.921.03 3.61 4U 0115+634 x0115+634 4U 0115+63 V* V635 Cas
V 0332+53 146.05-2.19 4.37 V 0332+53 v0332+53 V 0332+53 V* BQ Cam
RX J0440.9+4431 159.85-1.27 205.26 LSV+44 17 lsv+4417 LSV+4417 TYC 2905-121-1
A 0535+26 181.50-2.64 103.5 1A 0535+262 x0535+262 A 0535+262 HIP 26566
MXB 0656-072 220.20-1.76 160.4 MXB 0656-072 x0656-072 MXB 0656-072 2E 0655.8-0708
Swift J0513.4-6547 275.99-34.55 27.27 SWIFT J0513.4-6547 swiftj0513.4-6547
GRO J1008-57 283.00-1.80 93.5 GRO J1008-57 groj1008-57 GRO J1008-57 [KRL2007b] 84
A 1118-615 292.50-0.90 407.0 1A 1118-61 x1118-616 2E 2448
GX 304-1 304.101.25 272.0 GX 304-1 gx304-1 GX 304-1 V* V850 Cen
MAXI J1409-619 311.80-0.44 503.7 MAXI J1409-619 maxij1409-619 MAXI J1409-619
2S 1417-624 313.02-1.60 17.51 H 1417-624 x1417-624 2S 1417-624 4U 1416-62

Times of Transient Outburst Detections
Times of Transient Outbursts

Monitored but Undetected Transient Pulsars
Source Name LII (deg) BII (deg) Period (s) Swift link RXTE link MAXI link Simbad link
GRO J1750-27 2.370.51 4.45 AX J1749.1-2639 groj1750-27 AX J1749.1-2639
2S 1845-024 30.42-0.41 94.6 x1845-024 4U 1850-03
GS 1843+00 33.071.69 29.5 Ginga 1843+00 gs1843+009 GS 1843+00 [KRL2007b] 336
GS 0834-430 262.02-1.51 12.3 gs0834-430 GS 0834-430 Ginga 0834-430

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Modification date: 9 March, 2012

Author Valerie Connaughton
Responsible Manager Jerry Fishman
Site Curator Valerie Connaughton