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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 fit by a power-law, ascribed to synchrotron radiation, like…

High Energy Astrophysical Phenomena · Physics 2015-06-04 R. P. MignanI , A. De Luca , W. Hummel , A. Zajczyk , B. Rudak , G. Kanbach , A. Slowikowska

We report on new high-resolution near-infrared images of the gravitationally lensed radio source PKS1830-211, a quasar at z=2.507. These adaptive optics observations, taken with the Very Large Telescope (VLT), are further improved through…

Astrophysics · Physics 2009-11-11 G. Meylan , F. Courbin , C. Lidman , J. -P. Kneib , L. E. Tacconi-Garman

Until now it has not been possible to obtain the proper motions of PSR B1849+00 with timing techniques or VLBI imaging given the enhanced interstellar scattering along its line of sight. We present an analysis of archive Very Large Array…

High Energy Astrophysical Phenomena · Physics 2024-08-16 Luis F. Rodriguez , Sergio A. Dzib , Luis A. Zapata , Laurent Loinard

We have used the ESO NTT/EMMI and VLT/FORS1 instruments to examine the LMC supernova remnant 0540-69.3 as well as its pulsar (PSR B0540-69) and pulsar-powered nebula in the optical range.Spectroscopic observations of the remnant covering…

Astrophysics · Physics 2009-11-10 N. I. Serafimovich , P. Lundqvist , Yu. A. Shibanov , J. Sollerman

We present the results of an observational photo-polarimetry campaign of the blazar PG 1553+113 at optical wavelengths. The blazar was recently detected at very high energies (> 100 GeV) by the H.E.S.S and MAGIC gamma-ray Cherenkov…

High Energy Astrophysical Phenomena · Physics 2015-05-28 I. Andruchow , J. A. Combi , A. J. Muñoz-Arjonilla , G. E. Romero , S. A. Cellone , J. Martí

The binary pulsar J2222-0137 is an enigmatic system containing a partially recycled millisecond pulsar and a companion of unknown nature. Whilst the low eccentricity of the system favors a white dwarf companion, an unusual double neutron…

Solar and Stellar Astrophysics · Physics 2015-06-16 A. T. Deller , J. Boyles , D. R. Lorimer , V. M. Kaspi , M. A. McLaughlin , S. Ransom , I. H. Stairs , K. Stovall

We present the first blind interferometric detection and imaging of a millisecond radio transient with an observation of transient pulsar J0628+0909. We developed a special observing mode of the Karl G. Jansky Very Large Array (VLA) to…

Astrophysics of Galaxies · Physics 2015-06-11 Casey J. Law , Geoffrey C. Bower , Martin Pokorny , Michael P. Rupen , Ken Sowinski

We had reported in Chaty, Mignani, Israel (2002) on the near-infrared (NIR) identification of a possible counterpart to the black hole candidate XTE J1908+094 obtained with the ESO/NTT. Here, we present new, follow-up, CFHT adaptive optics…

Astrophysics · Physics 2009-11-13 Sylvain Chaty , Roberto P. Mignani , Gianluca Israel

We describe observations of the 2003 outburst of the hard-spectrum X-ray transient 4U 1901+03 with the Rossi X-ray Timing Explorer. The outburst was first detected in 2003 February by the All-Sky Monitor, and reached a peak 2.5-25 keV flux…

Astrophysics · Physics 2009-11-11 Duncan K. Galloway , Zhongxiang Wang , Edward H. Morgan

We have investigated the pulsar PSR B2224+65 and its X-ray jet with XMM-Newton. Apart from the long X-ray jet which is almost perpendicular to the direction of proper motion, a putative extended feature at the pulsar position, which…

High Energy Astrophysical Phenomena · Physics 2015-06-03 C. Y. Hui , R. H. H. Huang , L. Trepl , N. Tetzlaff , J. Takata , E. M. H. Wu , K. S. Cheng

We have made timing observations of binary pulsar PSR B1534+12 with radio telescopes at Arecibo, Green Bank, and Jodrell Bank. By combining our new observations with data collected up to seven years earlier, we obtain a significantly…

We report the discovery of the millisecond pulsar PSR J2043+1711 in a search of a Fermi Large Area Telescope (LAT) source with no known associations, with the Nancay Radio Telescope. The new pulsar, confirmed with the Green Bank Telescope,…

The POLAR detector is a space based Gamma-Ray Burst (GRB) polarimeter sensitive in the 15-500 keV energy range. Apart from its main scientific goal as a Gamma-Ray Burst polarimeter it is also able to detect photons from pulsars in orbit. By…

The combined use of the ESO Very Large Telescope (VLT) UT1 Science Verification (SV) images and of the Hubble Space Telescope (HST) Hubble Deep Field South observations allows us to strengthen the identification as a candidate elliptical…

We report the discovery with the Parkes radio telescope of a pulsar associated with the ~ 1700 yr-old oxygen-rich composite supernova remnant G292.0+1.8. PSR J1124-5916 has period 135 ms and period derivative 7.4e-13, implying…

Astrophysics · Physics 2009-11-07 F. Camilo , R. N. Manchester , B. M. Gaensler , D. R. Lorimer , J. Sarkissian

We report the accurate sub-arcsec X-ray position of the new Anomalous X-ray Pulsar (AXP) XTE J1810-197, derived with a Chndra-HRC Target of Opportunity observation carried out in November 2003. We also report the discovery of a likely IR…

Recent VLBI measurements of the astrometric parameters of the millisecond pulsar J0218+4232 by Du et al. have suggested this pulsar is as distant as 6.3 kpc. At such a large distance, the large {\gamma}-ray flux observed from this pulsar…

High Energy Astrophysical Phenomena · Physics 2015-06-22 J. P. W. Verbiest , D. R. Lorimer

We report the discovery of a new black-widow millisecond pulsar, PSR J1544-2555, associated with the Fermi-LAT source 4FGL J1544.2-2554. Optical, radio, and gamma-ray observations confirmed its nature as a compact spider binary system.…

We report on the results of the extensive multi-wavelength campaign from optical to GeV gamma-rays of the 2014 periastron passage of PSR B1259-63, which is a unique high-mass gamma-ray emitting binary system with a young pulsar companion.…

We present the study of multi-wavelength observations of an unidentified Fermi Large Area Telescope (LAT) source, 4FGL J1910.7-5320, a new candidate redback millisecond pulsar binary. In the 4FGL 95% error region of 4FGL J1910.7-5320, we…