Results 41 to 50 of about 196,414 (320)

The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars

Astrophysical Journal Supplement Series, 2020
We present a new analysis of the profile data from the 47 millisecond pulsars comprising the 12.5 yr data set of the North American Nanohertz Observatory for Gravitational Waves, which is presented in a parallel paper (Alam et al., hereafter ).
Md F. Alam, Z. Arzoumanian, P. Baker, Harsha Blumer, Keith E. Bohler, A. Brazier, P. Brook, S. Burke-Spolaor, K. Caballero, R. Camuccio, Rachel L. Chamberlain, S. Chatterjee, J. Cordes, N. Cornish, F. Crawford, H. Cromartie, M. DeCesar, P. Demorest, T. Dolch, J. Ellis, R. Ferdman, E. Ferrara, W. Fiore, E. Fonseca, Yhamil Garcia, N. Garver-Daniels, P. Gentile, D. Good, Jordan A. Gusdorff, Daniel Halmrast, J. Hazboun, K. Islo, R. Jennings, Cody Jessup, Megan L. Jones, A. Kaiser, D. Kaplan, L. Kelley, J. Key, M. Lam, T. Joseph W. Lazio, D. Lorimer, Jing Luo, R. Lynch, D. Madison, Kaleb Maraccini, M. Mclaughlin, C. Mingarelli, C. Ng, Benjamin M. X. Nguyen, D. Nice, T. Pennucci, N. Pol, Joshua Ramette, S. Ransom, P. Ray, B. Shapiro-Albert, X. Siemens, J. Simon, R. Spiewak, I. Stairs, D. Stinebring, K. Stovall, J. Swiggum, S. Taylor, M. Tripepi, M. Vallisneri, S. Vigeland, C. Witt, Weiwei Zhu   +69 more
semanticscholar   +1 more source

Broadband X-Ray Timing and Spectral Characteristics of the Accretion-powered Millisecond X-Ray Pulsar MAXIJ1816-195

The Astrophysical Journal, 2023
We studied the broadband X-ray timing and spectral behaviors of the newly confirmed accreting millisecond X-ray pulsar MAXI J1816−195 during its 2022 outburst.
Zhaosheng Li, Lucien Kuiper, Mingyu Ge, Maurizio Falanga, Juri Poutanen, Long Ji, Yuanyue Pan, Yue Huang, Renxin Xu, Liming Song, Jinlu Qu, Shu Zhang, Fangjun Lu, Shuang-Nan Zhang   +13 more
doaj   +1 more source

THE NANOGRAV NINE-YEAR DATA SET: MASS AND GEOMETRIC MEASUREMENTS OF BINARY MILLISECOND PULSARS [PDF]

, 2016
We analyze 24 binary radio pulsars in the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) nine-year data set. We make 14 significant measurements of the Shapiro delay, including new detections in four pulsar-binary systems (PSRs ...
E. Fonseca, T. Pennucci, J. Ellis, I. Stairs, D. Nice, S. Ransom, P. Demorest, Z. Arzoumanian, K. Crowter, T. Dolch, R. Ferdman, M. Gonzalez, G. Jones, Megan L. Jones, M. Lam, L. Levin, M. Mclaughlin, K. Stovall, J. Swiggum, Weiwei Zhu   +19 more
semanticscholar   +1 more source

Single Photon Kilohertz Frame Rate Imaging of Neural Activity

Advanced Science, 2022
Establishing the biological basis of cognition and its disorders will require high precision spatiotemporal measurements of neural activity. Recently developed genetically encoded voltage indicators (GEVIs) report both spiking and subthreshold activity ...
Tian Tian, Yifang Yuan, Srinjoy Mitra, Istvan Gyongy, Matthew F. Nolan   +4 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

GMRT Discovery of A Millisecond Pulsar in a Very Eccentric Binary System [PDF]

, 2004
We report the discovery of the binary millisecond pulsar J0514-4002A, which is the first known pulsar in the globular cluster NGC 1851 and the first pulsar discovered using the Giant Metrewave Radio Telescope (GMRT). The pulsar has a rotational period of
C. H. Ishwara-Chandra, D’Amico N., Johnston S., Paulo C. Freire, Scott M. Ransom, Yashwant Gupta   +5 more
core   +3 more sources

Modeling pulse profiles of accreting millisecond pulsars [PDF]

, 2008
I review the basic observational properties of accreting millisecond pulsars that are important for understanding the physics involved in formation of their pulse profiles. I then discuss main effects responsible for shaping these profiles.
Alessandro Patruno, Diego Altamirano, J. Poutanen, Manuel Linares, Nanda Rea, Nathalie Degenaar, Paolo Soleri, Piergiorgio Casella, Rudy Wijnands   +8 more
core   +2 more sources

Optical Spectroscopy and Demographics of Redback Millisecond Pulsar Binaries [PDF]

Astrophysical Journal, 2018
We present the first optical spectroscopy of five confirmed (or strong candidate) redback millisecond pulsar binaries, obtaining complete radial velocity curves for each companion star.
J. Strader, S. Swihart, L. Chomiuk, A. Bahramian, Christopher T. Britt, C. C. Cheung, K. Dage, J. Halpern, Kwan-Lok Li, R. Mignani, R. Mignani, J. Orosz, M. Peacock, R. Salinas, L. Shishkovsky, E. Tremou   +15 more
semanticscholar   +1 more source

Millisecond mix-and-quench crystallography (MMQX) enables time-resolved studies of PEPCK with remote data collection

IUCrJ, 2021
Time-resolved crystallography of biomolecules in action has advanced rapidly as methods for serial crystallography have improved, but the large number of crystals and the complex experimental infrastructure that are required remain serious obstacles to ...
Jonathan A. Clinger, David W. Moreau, Matthew J. McLeod, Todd Holyoak, Robert E. Thorne   +4 more
doaj   +1 more source

Searching for pulsed emission from XTE J0929-314 at high radio frequencies

, 2009
The aim of this work is to search for radio signals in the quiescent phase of accreting millisecond X-ray pulsars, in this way giving an ultimate proof of the recycling model, thereby unambiguously establishing that accreting millisecond X-ray pulsars ...
A. Possenti, Alpar, Altamirano, Bhattacharya, Brown, Burderi, Burderi, Burgay, Campana, Casella, Colpi, Cordes, D'Amico, D'Avanzo, Di Salvo, Di Salvo, Eggleton, Emmering, Galloway, Kramer, Krimm, L. Burderi, M. Burgay, M. N. Iacolina, Manchester, Monelli, Rappaport, Rutledge, Shakura, T. Di Salvo, Taylor, Wijnands   +31 more
core   +1 more source