Results 101 to 110 of about 13,694 (217)

Pulsar Timing Arrays: Status and Techniques

, 2012
Three pulsar timing arrays are now producing high quality data sets. As reviewed in this paper, these data sets are been processed to 1) develop a pulsar-based time standard, 2) search for errors in the solar system planetary ephemeris and 3) detect ...
Hobbs, G.
core   +1 more source

In-field Phasing at the Upgraded GMRT

The Astrophysical Journal
In time-domain radio astronomy with arrays, voltages from individual antennas are added together with proper delay and fringe correction to form the beam in real time.
Sanjay Kudale, Jayanta Roy, Jayaram N. Chengalur, Shyam Sharma, Sangita Kumari   +4 more
doaj   +1 more source

Probing the Universe using Pulsar Timing Arrays [PDF]

EPJ Web of Conferences
Supermassive black holes (SMBH), found at the centers of galaxies, have been observed in the early Universe, yet their rapid growth remains an open question.
Falxa Mikel
doaj   +1 more source

On the Pulse Intensity Modulation of PSR B0823+26

, 2012
We investigate the radio emission behaviour of PSR B0823+26, a pulsar which is known to undergo pulse nulling, using an 153-d intensive sequence of observations.
A. G. Lyne, Addison, B. W. Stappers, Backer, Backer, Bartel, Becker, Bedding, Biggs, Burke-Spolaor, Burke-Spolaor, Camilo, Contopoulos, Cordes, Craft, Deich, Esamdin, Everett, Foster, Geppert, Gwinn, Hesse, Hobbs, Hobbs, Jones, Keane, Keane, Kramer, Li, Li, Li, Lorimer, Lorimer, Lyne, Lyne, M. Kramer, Maciesiak, Manchester, McLaughlin, N. J. Young, P. Weltevrede, Politis, Rankin, Rankin, Rathnasree, Rheinhardt, Ritchings, Rosen, Scargle, Shao, Templeton, Templeton, Tepedelenliogˇlu, Timokhin, Urpin, van Leeuwen, Wang, Wang, Zhang, Zoubir   +59 more
core   +1 more source

NICER Timing of the X-Ray Thermal Isolated Neutron Star RX J0806.4–4123

The Astrophysical Journal
The X-ray thermal isolated neutron star (XTINS) RX J0806.4–4123 shows interesting multiwavelength properties that seemingly deviate from those of similar neutron stars.
B. Posselt, G. G. Pavlov, W. C. G. Ho, F. Haberl   +3 more
doaj   +1 more source

Time-Correlated Structure in Spin Fluctuations in Pulsars

, 2012
We study statistical properties of stochastic variations in pulse arrival times, timing noise, in radio pulsars using a new analysis method applied in the time domain. The method proceeds in two steps. First, we subtract low-frequency wander using a high-
Alpar, Alpar, B. Link, Boynton, Boynton, Boynton, Boynton, Cheng, Cheng, Cordes, Cordes, Cordes, D. J. Nice, Edelson, Fukumura, Hobbs, Hobbs, Hobbs, Jones, Lamb, Link, Liu, Lyne, Lyne, Lyne, Pizzochero, Rickett, S. N. Shore, S. Price, Shabanova, Stinebring, Urama, van Haasteren, You   +33 more
core   +1 more source

Have pulsar timing array methods detected a cosmological phase transition? [PDF]

, 2023
Andrea Addazi, Yi-Fu Cai, Antonino Marcianò, Luca Visinelli   +3 more
openalex   +1 more source

Reprocessing of the Parkes 70 cm Survey and Discovery of a New Radio Pulsar in the Large Magellanic Cloud

The Astrophysical Journal
We have reprocessed the data archived from the Parkes 70 cm (PKS70) pulsar survey with an expanded dispersion measure (DM) search range and an acceleration search.
Wenke Xia, Fronefield Crawford, Shinnosuke Hisano, Tai Jespersen, Melanie Ficarra, Mckenzie Golden, Mia Gironda   +6 more
doaj   +1 more source

The NANOGrav 12.5-Year Data Set: Dispersion Measure Misestimations with Varying Bandwidths

The Astrophysical Journal
Noise characterization for pulsar-timing applications accounts for interstellar dispersion by assuming a known frequency dependence of the delay it introduces in the times of arrival (TOAs).
Sophia Valentina Sosa Fiscella, Michael T. Lam, Zaven Arzoumanian, Harsha Blumer, Paul R. Brook, H. Thankful Cromartie, Megan E. DeCesar, Paul B. Demorest, Timothy Dolch, Justin A. Ellis, Robert D. Ferdman, Elizabeth C. Ferrara, Emmanuel Fonseca, Nate Garver-Daniels, Peter A. Gentile, Deborah C. Good, Megan L. Jones, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Maura A. McLaughlin, Cherry Ng, David J. Nice, Timothy T. Pennucci, Nihan S. Pol, Scott M. Ransom, Renée Spiewak, Ingrid H. Stairs, Kevin Stovall, Joseph K. Swiggum, Sarah J. Vigeland   +30 more
doaj   +1 more source

Identifying Pulsar Candidates in Interferometric Radio Images Using Scintillation

The Astrophysical Journal
Pulsars have been primarily detected by their narrow pulses or periodicity in time domain data. Interferometric surveys for pulsars are challenging due to the trade-off between beam sensitivity and beam size and the corresponding tradeoff between survey ...
Jitendra Salal, Shriharsh P. Tendulkar, Visweshwar Ram Marthi   +2 more
doaj   +1 more source