Results 41 to 50 of about 76,238 (239)

Recent H-alpha Results on Pulsar B2224+65’s Bow-Shock Nebula, the “Guitar” [PDF]

Journal of Astronomy and Space Sciences, 2016
We used the 4 m Discovery Channel Telescope (DCT) at Lowell observatory in 2014 to observe the Guitar Nebula, an Hα bow-shock nebula around the high-velocity radio pulsar B2224+65.
Timothy Dolch, Shami Chatterjee, Dan P. Clemens, James M. Cordes, Lauren R. Cashmen, Brian W. Taylor   +5 more
doaj   +1 more source

The characteristics of millisecond pulsar emission: I. Spectra, pulse shapes and the beaming fraction

, 1998
We have monitored a large sample of millisecond pulsars using the 100-m Effelsberg radio telescope in order to compare their radio emission properties to the slowly rotating population.
Alexander Wolszczan, Axel Jessner, Backer D. C., Bell J. F., Biggs J. D., Clifton T. R., D'Amico N., Doroshenko O. V., Duncan R. Lorimer, Fernando Camilo, Geppert U., Gil J. A., Gil J. A., Gil J. A., Jahan Miri M., Johnston S., Kanbach G., Kijak J., Kiriaki M. Xilouris, Kramer M., Kramer M., Lorimer D. R., Lorimer D. R., Lyne A. G., Malofeev V. M., Manchester R. N., Matese J. J., Michael Kramer, Narayan R., Nicastro L., Oleg Doroshenko, Ott M., Radhakrishnan V., Richard Wielebinski, Seiradakis J. H., Shklovskii I. S., Srinivasan G., Van den Heuvel E. P. J., von Hoensbroech A., von Hoensbroech A., Xilouris K. M.   +40 more
core   +1 more source

Properties and observability of glitches and anti-glitches in accreting pulsars [PDF]

, 2015
Several glitches have been observed in young, isolated radio pulsars, while a clear detection in accretion-powered X-ray pulsars is still lacking. We use the Pizzochero snowplow model for pulsar glitches as well as starquake models to determine for the ...
Doroshenko, V., Ducci, L., Ferrigno, C., Mereghetti, S., Pizzochero, P. M., Santangelo, A.   +5 more
core   +3 more sources

A Cosmic Census of Radio Pulsars with the SKA [PDF]

, 2014
The Square Kilometre Array (SKA) will make ground breaking discoveries in pulsar science. In this chapter we outline the SKA surveys for new pulsars, as well as how we will perform the necessary follow-up timing observations. The SKA's wide field-of-view,
Bates, S., Bhattacharyya, B., Bhattacharyya, B., Burgay, M., Champion, D., Chatterjee, S., Eatough, R., Hessels, J., Janssen, G., Keane, E., Keane, E., Kramer, M., Kramer, M., Lee, K., Margueron, J., Oertel, M., Possenti, A., Ransom, S., Stappers, B., Stappers, B., Theureau, G., Torne,, van Leeuwen, J.   +22 more
core   +4 more sources

Discovery of 15 New Pulsars at High Galactic Latitudes with FAST

The Astrophysical Journal
We present the discovery and timing results for 15 pulsars discovered in a high-Galactic-latitude survey conducted with the Five-hundred-meter Aperture Spherical Telescope.
Xin Xu, Shi Dai, Qijun Zhi, Juntao Bai, Joanna Berteaud, Francesca Calore, Maïca Clavel, Weiwei Zhu, Di Li, Rushuang Zhao, Renxin Xu, Guojun Qiao   +11 more
doaj   +1 more source

Profile and polarization characteristics of energetic pulsars

, 2008
In this paper we compare the characteristics of pulsars with a high spin-down energy loss rate (Edot) against those with a low Edot. We show that the differences in the total intensity pulse morphology between the two classes are in general rather subtle.
Barnard, Biggs, Blaskiewicz, Cheng, Crawford, D'Amico, Daugherty, Dyks, Dyks, Dyks, Dyks, Dyks, Everett, Gil, Gonthier, Gould, Gupta, Han, Han, Harding, Harding, Hotan, Huguenin, Johnston, Johnston, Johnston, Johnston, Karastergiou, Karastergiou, Keith, Kijak, Kramer, Kramer, Kramer, Lorimer, Lyne, Manchester, Manchester, Manchester, Manchester, Manchester, Manchester, Marquardt, Mitra, Mitra, Morini, Muslimov, Muslimov, Patrick Weltevrede, Pellizzoni, Petrova, Press, Qiao, Radhakrishnan, Radhakrishnan, Rankin, Rankin, Rankin, Romani, Romani, Simon Johnston, Smith, Thompson, van Straten, von Hoensbroech, von Mises, Weisberg, Weltevrede, Weltevrede, Weltevrede   +69 more
core   +2 more sources

Disengaging the Engine: Histone Deacetylases 1 and 2‐Mediated Acetylation of Hexokinase‐2 Regulates Energy Metabolism in Microglia Following Intracerebral Hemorrhage

Advanced Science, EarlyView.
This study demonstrates that HDAC1/2 knockout in microglia alleviates neurological deficits, preserves white matter, and accelerates hematoma clearance after ICH. HDAC1/2 inhibition reduces HK2 acetylation, shifts metabolism from glycolysis to fatty acid oxidation, reduces inflammation, and enhances phagocytosis.
Zhiwen Jiang, Heng Yang, Xinjie Gao, Zengyu Zhang, Ruiyuan Weng, Yuchao Fei, Jiabin Su, Hanqiang Jiang, Wei Ni, Yuxiang Gu   +9 more
wiley   +1 more source

The Emission Geometry of Pulsars with Interpulses

The Astrophysical Journal
We present polarization profiles of 23 pulsars exhibiting interpulse (IP) emissions using the Five-hundred-meter Aperture Spherical Radio Telescope. By applying the rotating vector model (RVM), we measured the inclination and impact angles for 16 pulsars,
S. N. Sun, N. Wang, W. M. Yan, S. Q. Wang   +3 more
doaj   +1 more source

Understanding the diffuse gamma ray emission of the milky way - from supernova remnants to dark matter [PDF]

Zbornik Matice Srpske za Prirodne Nauke, 2019
Diffuse gamma ray emission from the Galactic center at 2-3 GeV, as well as the 12 TeV gamma ray excess in the Galactic disk, remain open for debate and represent the missing puzzles in the complete picture of the high-energy Milky Way sky.
Petrović Jovana M., Prodanović Tijana S., Kovačević Miloš I.   +2 more
doaj   +1 more source

Pulsar interpretation of the lepton spectra measured by AMS-02 [PDF]

, 2016
AMS-02 recently published its lepton spectra measurement. The results show that the positron fraction no longer increases above $\sim$200 GeV. The aim of this work is to investigate the possibility that the excess of positron fraction is due to pulsars ...
Feng, Jie, Zhang, Hong-Hao
core   +2 more sources