1,724,699 research outputs found
4026. Materne Berler, de Rouffach
No full text4026. Materne Berler, de Rouffach. In: Molinier Auguste. Les Sources de l'histoire de France - Des origines aux guerres d'Italie (1494). IV. Les Valois, 1328-1461. Paris : A. Picard et fils, 1904. p. 218
4026. Materne Berler, de Rouffach
No full text4026. Materne Berler, de Rouffach. In: Molinier Auguste. Les Sources de l'histoire de France - Des origines aux guerres d'Italie (1494). IV. Les Valois, 1328-1461. Paris : A. Picard et fils, 1904. p. 218
St. Louis & San Francisco (SLSF) "Frisco" 4026
No full textA photograph print showing the St. Louis and San Francisco (SLSF) "Frisco" 4026, 2-8-2, Monett, MO
Block Card 4026 Berwick Avenue
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: dwelling | multi-family | 4026 Berwick Avenue (Toledo, Ohio) | garrison style | Greek Revival Sstyle | Fruit Gardens Condominium | Fruit Gardens (Toledo, Ohio) | Willys Park area (Toledo, Ohio) | West Toledo (Toledo, Ohio
Block Card 4026 Wetzler Road
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Garages (Toledo, Ohio) | Homeville Subdivision (Toledo, Ohio) | Willys Park area (Toledo, Ohio) | West Toledo (Toledo, Ohio) | 4026 Wetzler Road (Toledo, Ohio
Block Card 4026 Parrakeet Avenue
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: dwelling | 4026 Parrakeet Avenue (Toledo, Ohio) | Bungalow Style | French Colonial Revival Style | Elmwood Park (Toledo, Ohio) | Willys Park area (Toledo, Ohio) | West Toledo (Toledo, Ohio
Block Card 4026 Hill Avenue
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Ranch houses | Dwelling | Fuller's Hillway Addition Plat II (Toledo, Ohio) | Inverness Area (Toledo, Ohio) | 4026 Hill Avenue (Toledo, Ohio
Multiwavelength properties of a new Geminga-like pulsar: PSRJ2021+4026
No full textIn this paper, we report on a detailed investigation of the multiwavelength properties of a newly detected γ-ray pulsar, PSR J2021+4026, in both observational and theoretical aspects. We first identify an X-ray source in the XMM–Newton serendipitous source catalogue, 2XMM J202131.0+402645, located within the 95 per cent confidence circle of PSR J2021+4026. With an archival Chandra observation, this identification provides an X-ray position with arcsecond accuracy which is helpful in facilitating further investigations. Searching for the pulsed radio emission at the position of 2XMM J202131.0+402645 with a 25-m telescope at Urumqi Astronomical Observatory resulted in null detection and places an upper limit of 0.1 mJy for any pulsed signal at 18 cm. Together with the emission properties in X-ray and γ-ray, the radio quietness suggests PSR J2021+4026 to be another member of Geminga-like pulsars. In the radio sky survey data, extended emission features have been identified in the γ-ray error circle of PSR J2021+4026. We have also re-analysed the γ-ray data collected by Fermi's Large Area Telescope. We found that the X-ray position of 2XMM J202131.0+402645 is consistent with that of the optimal γ-ray timing solution. We have further modelled the results in the context of the outer gap model, which provides us with constraints for the pulsar emission geometry such as the magnetic inclination angle and the viewing angle. We have also discussed the possibility of whether PSR J2021+4026 has any physical association with the supernova remnant G78.2+2.1 (γ-Cygni).link_to_OA_fulltex
Repeated State Change of Variable Gamma-Ray Pulsar PSR J2021+4026
No full textPSR J2021+4026 is a radio-quiet gamma-ray pulsar and the first pulsar that shows state change of the gamma-ray emission and spindown rate. The state change of PSR J2021+4026 was first observed at 2011 October, at which the pulsar changes the state from high gamma-ray flux/low spindown rate state to low gamma-ray flux/high spindown rate state. In 2014 December, PSR J2021+4026 recovered the state before the 2011 state change over a timescale of a few months. We report that the long-term evolution of the gamma-ray flux and timing behavior suggests that PSR J2021+4026 changed the state near 2018 February 1 and entered a new low gamma-ray flux/high spindown rate state. At the 2018 state change, the averaged flux dropped from (1.29 +/- 0.01) x 10(-6) cts.cm(-2) s(-1) to (1.12 +/- 0.01) x 10(-6) cts.cm(-2) s(-1), which is behavior similar to that of the 2011 event. The spindown rate has increased by similar to 3% in the new state since the 2018 state change. The shapes of pulse profile and spectrum in GeV bands also changed at the 2018 event, and they are consistent with behavior at the 2011 state change. Our results probably suggest that PSR J2021+4026 is switching between different states with a timescale of several years, like some radio pulsars (e.g., PSR B1828-11). PSR J2021+4026 will provide a unique opportunity to study the mechanism of the state switching
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