Outputs (47)

PSR J2222-0137: I. Improved physical parameters for the system (2021)
Journal Article
Guo, Y. J., Freire, P. C., Guillemot, L., Kramer, M., Zhu, W. W., Wex, N., Mckee, J. W., Deller, A., Ding, H., Kaplan, D. L., Stappers, B., Cognard, I., Miao, X., Haase, L., Keith, M., Ransom, S. M., & Theureau, G. (2021). PSR J2222-0137: I. Improved physical parameters for the system. Astronomy and Astrophysics, 654, Article A16. https://doi.org/10.1051/0004-6361/202141450

Context. The PSR J2222-0137 binary system has a set of features that make it a unique laboratory for tests of gravity theories. Aims. To fully exploit the system's potential for these tests, we aim to improve the measurements of its physical paramete... Read More about PSR J2222-0137: I. Improved physical parameters for the system.

Strong-field gravity tests with the double pulsar (2021)
Journal Article
Kramer, M., Stairs, I. H., Manchester, R. N., Wex, N., Deller, A. T., Coles, W. A., Ali, M., Burgay, M., Camilo, F., Cognard, I., Damour, T., Desvignes, G., Ferdman, R. D., Freire, P. C., Grondin, S., Guillemot, L., Hobbs, G. B., Janssen, G., Karuppusamy, R., Lorimer, D. R., …Theureau, G. (2021). Strong-field gravity tests with the double pulsar. Physical Review X, 11(4), Article 041050. https://doi.org/10.1103/PhysRevX.11.041050

Continued timing observations of the double pulsar PSR J0737-3039A/B, which consists of two active radio pulsars (A and B) that orbit each other with a period of 2.45 h in a mildly eccentric (e=0.088) binary system, have led to large improvements in... Read More about Strong-field gravity tests with the double pulsar.

Profile changes associated with dispersion measure events in PSR J1713+0747 (2021)
Journal Article
Lin, F. X., Lin, H. H., Luo, J., Main, R., McKee, J., Pen, U. L., Simard, D., & van Kerkwijk, M. H. (2021). Profile changes associated with dispersion measure events in PSR J1713+0747. Monthly notices of the Royal Astronomical Society, 508(1), 1115-1127. https://doi.org/10.1093/mnras/stab2529

Propagation effects in the interstellar medium and intrinsic profile changes can cause variability in the timing of pulsars, which limits the accuracy of fundamental science done via pulsar timing. One of the best timing pulsars, PSR J1713+0747, has... Read More about Profile changes associated with dispersion measure events in PSR J1713+0747.

Pulsars with NenuFAR: Backend and pipelines (2021)
Journal Article
Bondonneau, L., Grießmeier, J. M., Theureau, G., Cognard, I., Brionne, M., Kondratiev, V., Bilous, A., McKee, J. W., Zarka, P., Viou, C., Guillemot, L., Chen, S., Main, R., Pilia, M., Possenti, A., Serylak, M., Shaifullah, G., Tiburzi, C., Verbiest, J. P., Wu, Z., …Tasse, C. (2021). Pulsars with NenuFAR: Backend and pipelines. Astronomy and Astrophysics, 652, https://doi.org/10.1051/0004-6361/202039339

Context. NenuFAR (New extension in Nançay upgrading LOFAR) is a new radio telescope developed and built on the site of the Nançay Radio Observatory. It is designed to observe the largely unexplored frequency window from 10 to 85 MHz, offering a high... Read More about Pulsars with NenuFAR: Backend and pipelines.

Refined mass and geometric measurements of the high-mass PSR J0740+6620 (2021)
Journal Article
Fonseca, E., Cromartie, H. T., Pennucci, T. T., Ray, P. S., Kirichenko, A. Y., Ransom, S. M., Demorest, P. B., Stairs, I. H., Arzoumanian, Z., Guillemot, L., Parthasarathy, A., Kerr, M., Cognard, I., Baker, P. T., Blumer, H., Brook, P. R., Decesar, M., Dolch, T., Dong, F. A., Ferrara, E. C., …Zhu, W. W. (2021). Refined mass and geometric measurements of the high-mass PSR J0740+6620. Astrophysical journal. Letters, 915(1), Article L12. https://doi.org/10.3847/2041-8213/ac03b8

We report results from continued timing observations of PSR J0740+6620, a high-mass, 2.8 ms radio pulsar in orbit with a likely ultracool white dwarf companion. Our data set consists of combined pulse arrival-time measurements made with the 100 m Gre... Read More about Refined mass and geometric measurements of the high-mass PSR J0740+6620.

The CHIME Pulsar Project: System Overview (2021)
Journal Article
Amiri, M., Bandura, K. M., Boyle, P. J., Brar, C., Cliche, J. F., Crowter, K., Cubranic, D., Demorest, P. B., Denman, N. T., Dobbs, M., Dong, F. Q., Fandino, M., Fonseca, E., Good, D. C., Halpern, M., Hill, A. S., Höfer, C., Kaspi, V. M., Landecker, T. L., Leung, C., …Wang, X. (2021). The CHIME Pulsar Project: System Overview. Astrophysical Journal Supplement, 255(1), Article 5. https://doi.org/10.3847/1538-4365/abfdcb

We present the design, implementation, and performance of the digital pulsar observing system constructed for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Using accelerated computing, this system processes independent, digitally steere... Read More about The CHIME Pulsar Project: System Overview.

Dispersion measure variability for 36 millisecond pulsars at 150 MHz with LOFAR (2020)
Journal Article
Donner, J. Y., Verbiest, J. P., Tiburzi, C., Osłowski, S., Künsemöller, J., Bak Nielsen, A. S., Grießmeier, J. M., Serylak, M., Kramer, M., Anderson, J. M., Wucknitz, O., Keane, E., Kondratiev, V., Sobey, C., McKee, J. W., Bilous, A. V., Breton, R. P., Brüggen, M., Ciardi, B., Hoeft, M., …Vocks, C. (2020). Dispersion measure variability for 36 millisecond pulsars at 150 MHz with LOFAR. Astronomy and Astrophysics, 644, Article A153. https://doi.org/10.1051/0004-6361/202039517

Context. Radio pulses from pulsars are affected by plasma dispersion, which results in a frequency-dependent propagation delay. Variations in the magnitude of this effect lead to an additional source of red noise in pulsar timing experiments, includi... Read More about Dispersion measure variability for 36 millisecond pulsars at 150 MHz with LOFAR.

A precise mass measurement of PSR J2045 + 3633 (2020)
Journal Article
McKee, J. W., Freire, P. C., Berezina, M., Champion, D. J., Cognard, I., Graikou, E., Guillemot, L., Keith, M. J., Kramer, M., Lyne, A. G., Stappers, B. W., Tauris, T. M., & Theureau, G. (2020). A precise mass measurement of PSR J2045 + 3633. Monthly notices of the Royal Astronomical Society, 499(3), 4082-4096. https://doi.org/10.1093/mnras/staa2994

We present the results of a timing analysis undertaken with the goal of obtaining an improved mass measurement of the recycled pulsar J2045 + 3633. Using regular high-cadence observations with the Effelsberg, Nançay, and Lovell radio telescopes, toge... Read More about A precise mass measurement of PSR J2045 + 3633.

Measuring interstellar delays of PSR J0613-0200 over 7 yr, using the Large European Array for Pulsars (2020)
Journal Article
Main, R. A., Sanidas, S. A., Antoniadis, J., Bassa, C., Chen, S., Cognard, I., Gaikwad, M., Hu, H., Janssen, G. H., Karuppusamy, R., Kramer, M., Lee, K. J., Liu, K., Mall, G., McKee, J. W., Mickaliger, M. B., Perrodin, D., Stappers, B. W., Tiburzi, C., Wucknitz, O., …Zhu, W. W. (2020). Measuring interstellar delays of PSR J0613-0200 over 7 yr, using the Large European Array for Pulsars. Monthly notices of the Royal Astronomical Society, 499(1), 1468-1479. https://doi.org/10.1093/mnras/staa2955

Using data from the Large European Array for Pulsars, and the Effelsberg telescope, we study the scintillation parameters of the millisecond pulsar PSR J0613-0200 over a 7 yr timespan. The 'secondary spectrum' - the 2D power spectrum of scintillation... Read More about Measuring interstellar delays of PSR J0613-0200 over 7 yr, using the Large European Array for Pulsars.

A pulsar-based time-scale from the International Pulsar Timing Array (2019)
Journal Article
Hobbs, G., Guo, L., Caballero, R. N., Coles, W., Lee, K. J., Manchester, R. N., Reardon, D. J., Matsakis, D., Tong, M. L., Arzoumanian, Z., Bailes, M., Bassa, C. G., Bhat, N. D., Brazier, A., Burke-Spolaor, S., Champion, D. J., Chatterjee, S., Cognard, I., Dai, S., Desvignes, G., …Zhu, X. J. (2020). A pulsar-based time-scale from the International Pulsar Timing Array. Monthly notices of the Royal Astronomical Society, 491(4), 5951-5965. https://doi.org/10.1093/mnras/stz3071

We have constructed a new time-scale, TT(IPTA16), based on observations of radio pulsars presented in the first data release from the International Pulsar Timing Array (IPTA). We used two analysis techniques with independent estimates of the noise mo... Read More about A pulsar-based time-scale from the International Pulsar Timing Array.