A Radio Pulsar/X-ray Binary Link (2009)
Archibald, Anne M., Stairs, Ingrid H., Ransom, Scott M., Kaspi, Victoria M., Kondratiev, Vladislav I., Lorimer, Duncan R., ...
Radio pulsars with millisecond spin periods are thought to have been spun up by transfer of matter and angular momentum from a low-mass companion star during an X-ray-emitting phase. The spin periods...
A radio pulsar/x-ray binary link (2009)
Archibald, Anne M., Stairs, Ingrid H., Ransom, Scott M., Kaspi, Victoria M., Kondratiev, Vladislav I., Lorimer, Duncan R., ...
Radio pulsars with millisecond spin periods are thought to have been spun up by the transfer of matter and angular momentum from a low-mass companion star during an x-ray–emitting phase. The spin...
A radio pulsar/x-ray binary link (2009)
Archibald, Anne M., Stairs, Ingrid H., Ransom, Scott M., Kaspi, Victoria M., Kondratiev, Vladislav I., Lorimer, Duncan R., ...
Radio pulsars with millisecond spin periods are thought to have been spun up by the transfer of matter and angular momentum from a low-mass companion star during an x-ray–emitting phase. The spin...
Phase-coherent timing of the accreting millisecond pulsar SAX J1748.9-2021 (2008)
Patruno, Alessandro, Altamirano, Diego, Hessels, Jason W. T., Casella, Piergiorgio, Wijnands, Rudy, Van Der Klis, Michiel
We present a phase-coherent timing analysis of the intermittent accreting millisecond pulsar SAX J1748.9-2021. A new timing solution for the pulsar spin period and the Keplerian binary orbital...
Chandra X-ray observatory observations of the globular cluster M71 (2008)
Elsner, Ronald F., Heinke, Craig O., Cohn, Haldan N., Lugger, Phyllis M., Maxwell, J. Edward, Stairs, Ingrid H., ...
A Massive Neutron Star in the Globular Cluster M5 (2007)
Freire, Paulo C. C., Wolszczan, Alex, Berg, Maureen Van Den, Hessels, Jason W. T.
We report the results of 19 years of Arecibo timing for two pulsars in the globular cluster NGC 5904 (M5), PSR B1516+02A (M5A) and PSR B1516+02B (M5B). This has resulted in the measurement of the...
Eight new MSPs in NGC 6440 and NGC 6441 (2007)
Freire, Paulo C. C., Ransom, Scott M., Begin, Steve, Stairs, Ingrid H., Hessels, Jason W. T., Frey, Lucille H., ...
We report the discovery of five new millisecond pulsars in the globular cluster NGC 6440 and three new ones in NGC 6441; each cluster has one previously known pulsar. Four of the new pulsars are...
Eight New Millisecond Pulsars in NGC 6440 and NGC 6441 (2007)
Freire, Paulo C. C., Ransom, Scott M., Begin, Steve, Stairs, Ingrid H., Hessels, Jason W. T., Frey, Lucille H., ...
Motivated by the recent discovery of 30 new millisecond pulsars in Terzan 5, made using the Green Bank Telescope's S-band receiver and the Pulsar Spigot spectrometer, we have set out to use the same...
Deep Searches for Radio Pulsations and Bursts from Four Southern Anomalous X-ray Pulsars (2007)
Crawford, Fronefield, Hessels, Jason W. T., Kaspi, Victoria M.
We have searched for persistent radio pulsations, bright single pulses, and bursts from four Southern anomalous X-ray pulsars (AXPs). Deep observations were conducted at 1.4 GHz in 1999 July and...
A Radio Pulsar Spinning at 716 Hz (2006)
Hessels, Jason W. T., Ransom, Scott M., Stairs, Ingrid H., Freire, Paulo C. C., Kaspi, Victoria M., Camilo, Fernando
We have discovered a 716-Hz eclipsing binary radio pulsar in the globular cluster Terzan 5 using the Green Bank Telescope. It is the fastest-spinning neutron star ever found, breaking the 23-year-old...
Twenty-One Millisecond Pulsars in Terzan 5 Using the Green Bank Telescope (2005)
Ransom, Scott M., Hessels, Jason W. T., Stairs, Ingrid H., Freire, Paulo C. C., Camilo, Fernando, Kaspi, Victoria M., ...
We have discovered 21 millisecond pulsars (MSPs) in the globular cluster Terzan 5 using the Green Bank Telescope, bringing the total of known MSPs in Terzan 5 to 24. These discoveries confirm...
The Millisecond Pulsars in NGC 6760 (2004)
Freire, Paulo C. C., Hessels, Jason W. T., Nice, David J., Ransom, Scott M., Lorimer, Duncan R., Stairs, Ingrid H.
We present the results of recent Arecibo and Green Bank observations of the globular cluster NGC 6760. Using Arecibo, a phase-coherent timing solution has been obtained for the previously known...
Pulsar Wind Nebulae in EGRET Error Boxes (2004)
Roberts, Mallory S. E., Brogan, Crystal L., Gaensler, Bryan M., Hessels, Jason W. T., Romani, Roger W.
A remarkable number of pulsar wind nebulae (PWN) are coincident with EGRET gamma-ray sources. X-ray and radio imaging studies of unidentified EGRET sources have resulted in the discovery of at least...
A 20 cm Search for Pulsars in Globular Clusters with Arecibo and the GBT (2004)
Hessels, Jason W. T., Ransom, Scott M., Stairs, Ingrid H., Kaspi, Victoria M., Freire, Paulo C. C., Backer, Donald C., ...
We are conducting deep searches for radio pulsations at L-band (~ 20cm) towards more than 30 globular clusters using the 305m Arecibo telescope in Puerto Rico and the 100m Green Bank Telescope in...
PSR J2021+3651: A New Gamma-Ray Pulsar Candidate (2004)
Roberts, Mallory S. E., Hessels, Jason W. T., Ransom, Scott M., Kaspi, Victoria M., Freire, Paulo C. C., Crawford, Fronefield, ...
The COS B high energy gamma-ray source 2CG 075+00, also known as GeV J2020+3658 or 3EG J2021+3716, has avoided identification with a low energy counterpart for over twenty years. We present a likely...
GBT Discovery of Two Binary Millisecond Pulsars in the Globular Cluster M30 (2003)
Ransom, Scott M., Stairs, Ingrid H., Backer, Donald C., Greenhill, Lincoln J., Bassa, Cees G., Hessels, Jason W. T., ...
We report the discovery of two binary millisecond pulsars in the core-collapsed globular cluster M30 using the Green Bank Telescope (GBT) at 20 cm. PSR J2140-2310A (M30A) is an eclipsing 11-ms pulsar...
PSR J2021+3651: A Young Radio Pulsar Coincident with an Unidentified EGRET Gamma-ray Source (2002)
Roberts, Mallory S. E., Hessels, Jason W. T., Ransom, Scott M., Kaspi, Victoria M., Freire, Paulo C. C., Crawford, Fronefield, ...
We report on a deep search for radio pulsations toward five unidentified ASCA X-ray sources coincident with EGRET gamma-ray sources. This search has led to the discovery of a young and energetic...