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Physics and astrophysics of strong magnetic field systems with eXTP
Andrea Santangelo, Silvia Zane, Hua Feng +38
In this paper we present the science potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies of strongly magnetized objects. We will focus on the physics…
The 11 years of low-activity of the magnetar XTE J1810-197
Fabio Pintore, Sandro Mereghetti, Paolo Esposito +5
In 2003, the magnetar XTE J1810-197 started an outburst that lasted until early 2007. In the following 11 years, the source stayed in a quiescent/low activity phase. XTE J1810-197…
A long-lived neutron star merger remnant in GW170817: constraints and clues from X-ray observations
L. Piro, E. Troja, B. Zhang +12
Multi-messenger observations of GW170817 have not conclusively established whether the merger remnant is a black hole (BH) or a neutron star (NS). We show that a long-lived magneti…
Spectral analysis of SXP59.0 during its 2017 outburst and properties of the soft excess in X-ray binary pulsars
N. La Palombara, P. Esposito, F. Pintore +3
We report the results provided by the XMM-Newton observation of the X-ray binary pulsar SXP59.0 during its most recent outburst in April 2017. The source was detected at $f_{\rm X}…
The two tails of PSR J2055+2539 as seen by Chandra: analysis of the nebular morphology and pulsar proper motion
Martino Marelli, Andrea Tiengo, Andrea De Luca +4
We analyzed two Chandra observations of PSR J2055+2539 (for a total integration time of 130 ks) in order to measure its proper motion and study its two elongated nebular feat…
A new Ultraluminous X-ray source in the galaxy NGC 5907
F. Pintore, A. Belfiore, G. Novara +14
We report on the serendipitous discovery of a new transient in NGC 5907, at a peak luminosity of 6.4x10^{39} erg/s. The source was undetected in previous 2012 Chandra observations…
EXTraS discovery of a peculiar flaring X-ray source in the Galactic globular cluster NGC 6540
Sandro Mereghetti, Andrea De Luca, David Salvetti +7
We report the discovery of a flaring X-ray source in the globular cluster NGC 6540, obtained during the EXTraS project devoted to a systematic search for variability in archival da…
Discovery of 3 s pulsations from the Brightest Hard X-ray Source in M31
Guillermo A. Rodríguez Castillo, Gian Luca Israel, Paolo Esposito +4
We report the discovery with XMM-Newton of 3-s X-ray pulsations from 3XMM J004232.1+411314, a dipping source that dominates the hard X-ray emission of M31. This finding unambiguous…
Probing the nature of AX J0043-737: Not an 87 ms pulsar in the SMC
C. Maitra, J. Ballet, P. Esposito +4
AX J0043-737 is a source in the ASCA catalogue, the nature of which is uncertain. It is most commonly classified as a Crab-like pulsar in the Small Magellanic Cloud (SMC) following…