Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Janssen, Gemma"'
Autor:
Liu, Yulan, Verbiest, Joris P. W., Main, Robert A., Wu, Ziwei, Ambalappat, Krishnakumar Moochickal, Champion, David J., Cognard, Ismaël, Guillemot, Lucas, Gaikwad, Madhuri, Janssen, Gemma H., Kramer, Michael, Keith, Michael J., Karuppusamy, Ramesh, Künkel, Lars, Liu, Kuo, McKee, James W., Mickaliger, Mitchell B., Stappers, Ben W., Shaifullah, Golam. M., Theureau, Gilles
Publikováno v:
A&A 664, A116 (2022)
Interstellar scintillation analysis of pulsars allows us to probe the small-scale distribution and inhomogeneities of the ionized interstellar medium. Our priority is to present the data set and the basic measurements of scintillation parameters of p
Externí odkaz:
http://arxiv.org/abs/2203.16950
Autor:
Nielsen, Ann-Sofie Bak, Janssen, Gemma H., Shaifullah, Golam, Verbiest, Joris P. W., Champion, David J., Desvignes, Grégory, Guillemot, Lucas, Karuppusamy, Ramesh, Kramer, Michael, Lyne, Andrew G., Possenti, Andrea, Stappers, Ben W., Bassa, Cees, Cognard, Ismaël, Liu, Kuo, Theureau, Gilles
We study the timing stability of three black widow pulsars, both in terms of their long-term spin evolution and their shorter-term orbital stability. The erratic timing behaviour and radio eclipses of the first two black widow pulsar systems discover
Externí odkaz:
http://arxiv.org/abs/2003.10352
Autor:
Babak, Stanislav, Petiteau, Antoine, Sesana, Alberto, Brem, Patrick, Rosado, Pablo A., Taylor, Stephen R., Lassus, Antoine, Hessels, Jason W. T., Bassa, Cees G., Burgay, Marta, Caballero, R. Nicolas, Champion, David J., Cognard, Ismael, Desvignes, Gregory, Gair, Jonathan R., Guillemot, Lucas, Janssen, Gemma H., Karuppusamy, Ramesh, Kramer, Michael, Lazarus, Patrick, Lee, K. J., Lentati, Lindley, Liu, Kuo, Mingarelli, Chiara M. F., Oslowski, Stefan, Perrodin, Delphine, Possenti, Andrea, Purver, Mark B., Sanidas, Sotiris, Smits, Roy, Stappers, Ben, Theureau, Gilles, Tiburzi, Caterina, van Haasteren, Rutger, Vecchio, Alberto, Verbiest, Joris P. W.
We have searched for continuous gravitational wave (CGW) signals produced by individually resolvable, circular supermassive black hole binaries (SMBHBs) in the latest EPTA dataset, which consists of ultra-precise timing data on 41 millisecond pulsars
Externí odkaz:
http://arxiv.org/abs/1509.02165
Autor:
Lentati, Lindley, Taylor, Stephen R., Mingarelli, Chiara M. F., Sesana, Alberto, Sanidas, Sotiris A., Vecchio, Alberto, Caballero, R. Nicolas, Lee, K. J., van Haasteren, Rutger, Babak, Stanislav, Bassa, Cees G., Brem, Patrick, Burgay, Marta, Champion, David J., Cognard, Ismael, Desvignes, Gregory, Gair, Jonathan R., Guillemot, Lucas, Hessels, Jason W. T., Janssen, Gemma H., Karuppusamy, Ramesh, Kramer, Michael, Lassus, Antoine, Lazarus, Patrick, Liu, Kuo, Osłowski, Stefan, Perrodin, Delphine, Petiteau, Antoine, Possenti, Andrea, Purver, Mark B., Rosado, Pablo A., Smits, Roy, Stappers, Ben, Theureau, Gilles, Tiburzi, Caterina, Verbiest, Joris P. W.
Publikováno v:
Monthly Notices of the Royal Astronomical Society 2015 453 (3): 2576-2598
We present new limits on an isotropic stochastic gravitational-wave background (GWB) using a six pulsar dataset spanning 18 yr of observations from the 2015 European Pulsar Timing Array data release. Performing a Bayesian analysis, we fit simultaneou
Externí odkaz:
http://arxiv.org/abs/1504.03692
Autor:
Shao, Lijing, Stairs, Ingrid H., Antoniadis, John, Deller, Adam T., Freire, Paulo C. C., Hessels, Jason W. T., Janssen, Gemma H., Kramer, Michael, Kunz, Jutta, Lämmerzahl, Claus, Perlick, Volker, Possenti, Andrea, Ransom, Scott, Stappers, Benjamin W., van Straten, Willem
The Square Kilometre Array (SKA) will use pulsars to enable precise measurements of strong gravity effects in pulsar systems, which yield tests of gravitational theories that cannot be carried out anywhere else. The Galactic census of pulsars will di
Externí odkaz:
http://arxiv.org/abs/1501.00058
Autor:
Bogdanov, Slavko, Archibald, Anne M., Bassa, Cees, Deller, Adam T., Halpern, Jules P., Heald, George, Hessels, Jason W. T., Janssen, Gemma H., Lyne, Andrew G., Moldon, Javier, Paragi, Zsolt, Patruno, Alessandro, Perera, Benetge B. P., Stappers, Ben W., Tendulkar, Shriharsh P., D'Angelo, Caroline R., Wijnands, Rudy
The PSR J1023+0038 binary system hosts a neutron star and a low-mass, main-sequence-like star. It switches on year timescales between states as an eclipsing radio millisecond pulsar and a low-mass X-ray binary. We present a multi-wavelength observati
Externí odkaz:
http://arxiv.org/abs/1412.5145
Autor:
Archibald, Anne M., Bogdanov, Slavko, Patruno, Alessandro, Hessels, Jason W. T., Deller, Adam T., Bassa, Cees, Janssen, Gemma H., Kaspi, Vicky M., Lyne, Andrew G., Stappers, Ben W., Tendulkar, Shriharsh P., D'Angelo, Caroline R., Wijnands, Rudy
Accreting millisecond X-ray pulsars are an important subset of low-mass X-ray binaries in which coherent X-ray pulsations can be observed during occasional, bright outbursts (X-ray luminosity $L_X\sim 10^{36}$ erg s$^{-1}$). These pulsations show tha
Externí odkaz:
http://arxiv.org/abs/1412.1306
Autor:
Yi, Shuxu, Stappers, Benjamin W., Sanidas, Sotirios A., Bassa, Cees G., Janssen, Gemma H., Lyne, Andrew G., Kramer, Michael, Zhang, Shuang-Nan
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 445, Issue 2, p.1245-1252 (2015)
We present the results of a search for gravitational waves (GWs) from individual sources using high cadence observations of PSR B1937+21. The data were acquired from an intensive observation campaign with the Lovell telescope at Jodrell Bank, between
Externí odkaz:
http://arxiv.org/abs/1409.2296
Autor:
Tendulkar, Shriharsh P., Yang, Chengwei, An, Hongjun, Kaspi, Victoria M., Archibald, Anne M., Bassa, Cees, Bellm, Eric, Bogdanov, Slavko, Harrison, Fiona A., Hessels, Jason W. T., Janssen, Gemma H., Lyne, Andrew G., Patruno, Alessandro, Stappers, Benjamin, Stern, Daniel, Tomsick, John A., Boggs, Steven E., Chakrabarty, Deepto, Christensen, Finn E., Craig, William W., Hailey, Charles A., Zhang, William
We report NuSTAR observations of the millisecond pulsar - low mass X-ray binary (LMXB) transition system PSR J1023+0038 from June and October 2013, before and after the formation of an accretion disk around the neutron star. Between June 10-12, a few
Externí odkaz:
http://arxiv.org/abs/1406.7009
Autor:
Ferdman, Robert D., Stairs, Ingrid H., Kramer, Michael, Janssen, Gemma H., Bassa, Cees G., Stappers, Benjamin W., Demorest, Paul B., Cognard, Ismaël, Desvignes, Gregory, Theureau, Gilles, Burgay, Marta, Lyne, Andrew G., Manchester, Richard N., Possenti, Andrea
The pulsar PSR J1756$-$2251 resides in a relativistic double neutron star (DNS) binary system with a 7.67-hr orbit. We have conducted long-term precision timing on more than 9 years of data acquired from five telescopes, measuring five post-Keplerian
Externí odkaz:
http://arxiv.org/abs/1406.5507