IGR J18490-0000

Other name = PSR J1849-0001, XMMU J184901.6-000117

Type Pulse Period Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
PWN/ ms Pulsar 0.03851893151s 18h 49m 01.563s -00o 01'17.35" Ratti et al. 2010
Published Papers
Miscellaneous :

Rodriguez et al. 2008:
  • Refined X-ray position
  • K=14.159, V> 20.2
  • Absorbed power law fits 0.5-9 keV spectra well, Γ= 1.8 NH=5 x1022cm-2; F2-10 keV=6.4 x 10-12 erg/s/cm2
  • Galactic source, possible XRB reinforced by position in Sagittarius arm
Ratti et al. 2010:
  • Chandra and Optical observations
  • Chandra refined position => refute the previously suggested IR counterpart
  • Identify a faint candidate in handra error box, with Ks=16.4 but association with IGR/Chandra source is discussed
  • Chandra source is extended
  • Source is a PWN (see also Terrier et al. 2008 AIP vol 1085, p312)
Gotthelf et al. 2010 ATel 3057 Gotthelf et al. 2011 (ApJ):
  • Discovery of 38.52 ms pulsar with RXTE => name PSR J1849-0001
  • Association with IGR source based on location and compatibility of X-ray flux
  • Confirm the previously proposed pulsar/PWN nature
  • Barycentric P = 0.03851893151s and P-dot ~1.40E-14 s/s at epoch MJD 55525.62.
  • Spin-down power 9.8E36 erg/s, surface dipole magnetic field strength 7.5E11 G, and characteristic age 42.9 kyr.
  • XMM observation => extended source
  • Spectral analysis => NH=4.3 x 1022 cm-2, Γpulsar=1.1, Γnebula=2.1
Curran et al. 2011(A&A):
  • ESO NIR observations
  • confirm magnitude (Ks=16.4) of previously suggested counterpart
  • Probability of chance superposition 5%
  • Source significantly brighter than any other isolated pulsar, hence possibility of unrelated star cannot be firmly rejected

Last updated 14 Sept. 2011

Jerome Rodriguez