All Outputs (7)

Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background (2024)
Journal Article
Agazie, G., Antoniadis, J., Anumarlapudi, A., Archibald, A. M., Arumugam, P., Arumugam, S., …The International Pulsar Timing Array Collaboration. (2024). Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background. The Astrophysical journal, 966(1), Article 105. https://doi.org/10.3847/1538-4357/ad36be

The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational-wave background (GWB). Given that each PTA made differ... Read More about Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background.

An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME (2024)
Journal Article
Jennings, R. J., Cordes, J. M., Chatterjee, S., McLaughlin, M. A., Demorest, P. B., Arzoumanian, Z., …Witt, C. A. (2024). An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME. The Astrophysical journal, 964(2), Article 179. https://doi.org/10.3847/1538-4357/ad2930

The millisecond pulsar J1713+0747 underwent a sudden and significant pulse shape change between 2021 April 16 and 17 (MJDs 59320 and 59321). Subsequently, the pulse shape gradually recovered over the course of several months. We report the results of... Read More about An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME.

The NANOGrav 15 yr Data Set: Search for Transverse Polarization Modes in the Gravitational-wave Background (2024)
Journal Article
Agazie, G., Anumarlapudi, A., Archibald, A. M., Arzoumanian, Z., Baier, J., Baker, P. T., …The NANOGrav Collaboration. (2024). The NANOGrav 15 yr Data Set: Search for Transverse Polarization Modes in the Gravitational-wave Background. Astrophysical journal. Letters, 964(1), L14. https://doi.org/10.3847/2041-8213/ad2a51

Recently we found compelling evidence for a gravitational-wave background with Hellings and Downs (HD) correlations in our 15 yr data set. These correlations describe gravitational waves as predicted by general relativity, which has two transverse po... Read More about The NANOGrav 15 yr Data Set: Search for Transverse Polarization Modes in the Gravitational-wave Background.

The NANOGrav 12.5 yr Data Set: A Computationally Efficient Eccentric Binary Search Pipeline and Constraints on an Eccentric Supermassive Binary Candidate in 3C 66B (2024)
Journal Article
Agazie, G., Arzoumanian, Z., Baker, P. T., Bécsy, B., Blecha, L., Blumer, H., …The NANOGrav Collaboration. (2024). The NANOGrav 12.5 yr Data Set: A Computationally Efficient Eccentric Binary Search Pipeline and Constraints on an Eccentric Supermassive Binary Candidate in 3C 66B. The Astrophysical journal, 963(2), 144. https://doi.org/10.3847/1538-4357/ad1f61

The NANOGrav 12.5 yr Data Set: Search for Gravitational Wave Memory (2024)
Journal Article
Agazie, G., Arzoumanian, Z., Baker, P. T., Bécsy, B., Blecha, L., Blumer, H., …The NANOGrav Collaboration. (2024). The NANOGrav 12.5 yr Data Set: Search for Gravitational Wave Memory. The Astrophysical journal, 963(1), Article 61. https://doi.org/10.3847/1538-4357/ad0726

We present the results of a Bayesian search for gravitational wave (GW) memory in the NANOGrav 12.5 yr data set. We find no convincing evidence for any gravitational wave memory signals in this data set. We find a Bayes factor of 2.8 in favor of a mo... Read More about The NANOGrav 12.5 yr Data Set: Search for Gravitational Wave Memory.

The Green Bank North Celestial Cap Survey. IX. Timing Follow-up for 128 Pulsars (2024)
Journal Article
McEwen, A. E., Swiggum, J. K., Kaplan, D. L., Tan, C. M., Meyers, B. W., Fonseca, E., …Stairs, I. H. (2024). The Green Bank North Celestial Cap Survey. IX. Timing Follow-up for 128 Pulsars. The Astrophysical journal, 962(2), Article 167. https://doi.org/10.3847/1538-4357/ad11f0

The Green Bank North Celestial Cap survey is one of the largest and most sensitive searches for pulsars and transient radio objects. Observations for the survey have finished; priorities have shifted toward long-term monitoring of its discoveries. In... Read More about The Green Bank North Celestial Cap Survey. IX. Timing Follow-up for 128 Pulsars.

A Gaussian-processes approach to fitting for time-variable spherical solar wind in pulsar timing data (2024)
Journal Article
Niţu, I. C., Keith, M. J., Tiburzi, C., Brüggen, M., Champion, D. J., Chen, S., …Vocks, C. (2024). A Gaussian-processes approach to fitting for time-variable spherical solar wind in pulsar timing data. Monthly notices of the Royal Astronomical Society, 528(2), 3304-3319. https://doi.org/10.1093/mnras/stae220

Propagation effects are one of the main sources of noise in high-precision pulsar timing. For pulsars below an ecliptic latitude of 5°, the ionized plasma in the solar wind can introduce dispersive delays of order 100 µs around solar conjunction at a... Read More about A Gaussian-processes approach to fitting for time-variable spherical solar wind in pulsar timing data.