Discovery of X-Rays from the Old and Faint Pulsar J1154–6250

  title={Discovery of X-Rays from the Old and Faint Pulsar J1154–6250},
  author={Andrei P. Igoshev and Sergey S. Tsygankov and Michela Rigoselli and Sandro Mereghetti and Sergei B. Popov and Justin G. Elfritz and Alexander A. Mushtukov},
  journal={The Astrophysical Journal},
We report on the first X-ray observation of the 0.28 s isolated radio pulsar PSR J1154--6250 obtained with the XMM-Newton observatory in February 2018. A point-like source is firmly detected at a position consistent with that of PSR J1154--6250. The two closest stars are outside the 3$\sigma$ confidence limits of the source position and thus unlikely to be responsible for the observed X-ray emission. The energy spectrum of the source can be fitted equally well either with an absorbed power-law… 

Figures and Tables from this paper

Powering central compact objects with a tangled crustal magnetic field
Central Compact Objects (CCOs) are X-ray sources with luminosity ranging between 1032-1034 erg s−1, located at the centres of supernova remnants. Some of them have been confirmed to be neutron stars.
Observational diversity of magnetized neutron stars.
An introductory review for non-astrophysicists about the observational properties of highly-magnetized NSs, and how the five fundamental quantities of NSs change with evolution of, and vary depending on the class of, the NSs is presented.
Evolution of Neutron Star Magnetic Fields
Neutron stars are natural physical laboratories allowing us to study a plethora of phenomena in extreme conditions. In particular, these compact objects can have very strong magnetic fields with
Thermal luminosities of cooling neutron stars
Ages and thermal luminosities of neutron stars, inferred from observations, can be interpreted with the aid of the neutron star cooling theory to gain information on the properties of superdense


X-Ray Emission from the Nearby PSR B1133+16 and Other Old Pulsars
We detected a nearby (d 360 pc), old (τ 5 Myr) pulsar B1133+16 with Chandra. The observed pulsar's flux is (0.8 ± 0.2) × 10-14 ergs cm-2 s-1 in the 0.5-8 keV band. Because of the small number of
We present the timing and spectral analyses of the XMM-Newton data on the 17 Myr old, nearby radio pulsar B0950+08. This observation revealed pulsations of the X-ray flux of PSR B0950+08 at its radio
Discovery of soft X-ray pulsations from the γ-ray source Geminga
THE nature of the γ-ray source 'Geminga' (2CG195 + 04) is a problem of considerable importance in high-energy astrophysics. First discovered in 1972 by the SAS-2 satellite1, Geminga emits virtually
XMM-Newton observation of the very old pulsar J0108-1431
We report on an X-ray observation of the 166 Myr old radio pulsar J0108–1431 with XMM-Newton. The X-ray spectrum can be described by a power-law model with a relatively steep photon index Γ ≈ 3 or by
We present 35 ks Chandra ACIS observations of the 42 Myr old radio pulsar PSR B1451-68. A point source is detected 0.''32 {+-} 0.''73 from the expected radio pulsar position. It has {approx}200
Pulsed X-rays from the Vela pulsar
THE Vela pulsar, PSR0833-45, is a young (104 yr) nearby neutron star emitting pulsed radiation in radio, optical and γ-ray bands1–5. Soft X-ray imaging by the Einstein6 and Exosat7 observatories has
A new X-ray look into four old pulsars
We report on the X-ray properties of four rotation-powered pulsars with characteristic ages in the range 0.3–5 Myr, derived from the analysis of XMM–Newton archival observations. We found convincing
XMM-Newton Observations of Radio Pulsars B0834+06 and B0826?34 and Implications for the Pulsar Inner Accelerator
We report the X-ray observations of two radio pulsars with drifting subpulses, B0834+06 and B0826?34, using XMM-Newton. PSR B0834+06 was detected with a total of 70 counts from the three EPIC
Revealing the X-Ray Emission Processes of Old Rotation-powered Pulsars: XMM-Newton Observations of PSR B0950+08, PSR B0823+26, and PSR J2043+2740
We have completed part of a program to study the X-ray emission properties of old rotation-powered pulsars with XMM-Newton in order to probe and identify the origin of their X-radiation. The X-ray
Simultaneous X-ray and radio observations of the radio-mode-switching pulsar PSR B1822−09
We report on simultaneous X-ray and radio observations of the radio-mode-switching pulsar PSR B1822-09 with ESA's XMM-Newton and the Westerbork Synthesis Radio Telescope, Giant Metrewave Radio