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PSR J0357+3205: the tail of the turtle
Martino Marelli, Andrea De Luca, David Salvetti +6
Using a new XMM-Newton observation, we have characterized the X-ray properties of the middle-aged radio-quiet gamma-ray pulsar J0357+3205 (named Morla) and its tail. The X-ray emis…
PSR J0357+3205: a fast moving pulsar with a very unusual X-ray trail
A. De Luca, R. P. Mignani, M. Marelli +6
The middle-aged PSR J0357+3205 is a nearby, radio-quiet, bright gamma-ray pulsar discovered by the Fermi mission. Our previous Chandra observation revealed a huge, very peculiar st…
Chandra, Keck and VLA Observations of the Crab Nebula during the 2011-April Gamma-ray Flare
Martin C. Weisskopf, Allyn F. Tennant, Roger Blandford +21
We present results from our analysis of Chandra X-ray Observatory, W. M. Keck Observatory, and Karl G. Jansky Very Large Array (VLA) images of the Crab Nebula that were contemporan…
New VLT observations of the Fermi pulsar PSR J1048-5832
M. Razzano, R. P. Mignani, M. Marelli +1
PSR J1048-5832 is a Vela-like (P=123.6 ms; tau~20.3 kyr) gamma-ray pulsar detected by Fermi, at a distance of ~2.7 kpc and with a rotational energy loss rate dot{E}_{SD} ~2 x 10^{3…
The magnetar candidate AX J1818.8-1559
S. Mereghetti, P. Esposito, A. Tiengo +3
In October 2007 a hard X-ray burst was detected by the INTEGRAL satellite from a direction consistent with the position of AX J1818.8-1559, an X-ray source at low Galactic latitude…
Optical and X-ray observations of candidate isolated neutron stars in the G315.4-2.3 SNR
R. P. Mignani, A. Tiengo, A. De Luca
G315.4-2.3 is a young Galactic supernova remnant (SNR), whose identification as the remains of a Type-II supernova (SN) explosion has been debated for a long time. In particular, r…
A study of the long term variability of RX J1856.5-3754 with XMM-Newton
S. Mereghetti, N. Sartore, A. Tiengo +3
We report on a detailed spectral analysis of all the available XMM-Newton data of RX J1856.5-3754, the brightest and most extensively observed nearby, thermally emitting neutron st…
VLT Suzaku observations of the Fermi pulsar PSR J1028-5819
R. P. Mignani, M. Razzano, P. Esposito +4
We used optical images taken with the Very Large Telescope (VLT) in the B and V bands to search for the optical counterpart of PSR J1028-5819 or constrain its optical brightness. A…
The near-infrared detection of PSR B0540-69 and its nebula
R. P. MignanI, A. De Luca, W. Hummel +4
The ~1700 year old PSR B0540-69 in the LMC is considered the twin of the Crab pulsar because of its similar spin parameters, magnetic field, and energetics. Its optical spectrum is…
Periodic Emission from the Gamma-ray Binary 1FGL J1018.6-5856
The Fermi LAT Collaboration, M. J. Coe, F. Di Mille +5
Gamma-ray binaries are stellar systems containing a neutron star or black hole with gamma-ray emission produced by an interaction between the components. These systems are rare, ev…
Spectral monitoring of RX J1856.5-3754 with XMM-Newton. Analysis of EPIC-pn data
N. Sartore, A. Tiengo, S. Mereghetti +3
Using a large set of XMM-Newton observations we searched for long term spectral and flux variability of the isolated neutron star RX J1856.5-3754 in the time interval from April 20…