Ingrid H. Stairs

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...

X-ray and Radio Timing of the Pulsar in 3C 58 (2009)

Livingstone, Margaret A., Ransom, Scott, Camilo, Fernando, Kaspi, Victoria M., Lyne, Andrew, Kramer, Michael, ...

We present timing data spanning 6.4 yrs for the young and energetic PSR J0205+6449, in the supernova remnant 3C 58. Data were obtained with the Rossi X-ray Timing Explorer, the Jodrell Bank...

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...

Gravitational science with pulsars and the Square Kilometre Array (2009)

Stairs, Ingrid H., Kramer, M., Backer, Donald C., Bailes, M., Cordesk, J. M., Johnston, S., ...

Pulsar observations form one of the Key Science Projects for the Square Kilometre Array. These will allow unique tests of General Relativity based on finding and timing pulsars in relativistic...

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...

Gravitational science with pulsars and the Square Kilometre Array (2009)

Stairs, Ingrid H., Kramer, M., Backer, Donald C., Bailes, M., Cordesk, J. M., Johnston, S., ...

Pulsar observations form one of the Key Science Projects for the Square Kilometre Array. These will allow unique tests of General Relativity based on finding and timing pulsars in relativistic...

Relativistic Spin Precession in the Double Pulsar (2008)

Breton, Rene P., Kaspi, Victoria M., Kramer, Michael, McLaughlin, Maura A., Lyutikov, Maxim, Ransom, Scott M., ...

The double pulsar PSR J0737-3039A/B consists of two neutron stars in a highly relativistic orbit that displays a roughly 30-second eclipse when pulsar A passes behind pulsar B. Describing this...

An eccentric binary millisecond pulsar in the galactic plane (2008)

Champion, David J., Ransom, Scott M., Lazarus, Patrick, Camilo, Fernando, Bassa, Cees, Kaspi, Victoria M., ...

Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+0327, a radio pulsar...

An eccentric binary millisecond pulsar in the galactic plane (2008)

Champion, David J., Ransom, Scott M., Lazarus, Patrick, Camilo, Fernando, Bassa, Cees, Kaspi, Victoria M., ...

Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+0327, a radio pulsar...

An eccentric binary millisecond pulsar in the galactic plane (2008)

Champion, David J., Ransom, Scott M., Lazarus, Patrick, Camilo, Fernando, Bassa, Cees, Kaspi, Victoria M., ...

Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+0327, a radio pulsar...

An eccentric binary millisecond pulsar in the galactic plane (2008)

Champion, David J., Ransom, Scott M., Lazarus, Patrick, Camilo, Fernando, Bassa, Cees, Kaspi, Victoria M., ...

Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+0327, a radio pulsar...

Science with ASKAP: the Australian square-kilometre-array pathfinder (2008)

Johnston, Simon, Bailes, Matthew, Bartel, Norbert, Baugh, Carlton, Bietenholz, Michael F., Blake, Chris, ...

The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries. The SKA will be 50 times more sensitive than any...

Science with ASKAP: the Australian square-kilometre-array pathfinder (2008)

Johnston, Simon, Bailes, Matthew, Bartel, Norbert, Baugh, Carlton, Bietenholz, Michael F., Blake, Chris, ...

The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries. The SKA will be 50 times more sensitive than any...

The discovery of an eccentric millisecond pulsar in the galactic plane (2008)

Champion, David J., Ransom, Scott M., Lazarus, Patrick, Camilo, Fernando, Kaspi, Victoria M., Nice, David J., ...

The evolution of binary systems is governed by their orbital properties and the stellar density of the local environment. Studies of neutron stars in binary star systems offer unique insights into...

PSR J1856+0245: arecibo discovery of a young, energetic pulsar coincident with the TeV gamma-ray source HESS J1857+026 (2008)

Hessels, Jason W., Nice, David J., Gaensler, Bryan M., Kaspi, Victoria M., Lorimer, Duncan R., Champion, David J., ...

We present the discovery of the Vela-like radio pulsar J1856+0245 in the Arecibo PALFA survey. PSR J1856+0245 has a spin period of 81 ms, a characteristic age of 21 kyr, and a spin-down luminosity...

An eccentric binary millisecond pulsar in the galactic plane (2008)

Champion, David J., Ransom, Scott M., Lazarus, Patrick, Camilo, Fernando, Bassa, Cees, Kaspi, Victoria M., ...

Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+0327, a radio pulsar...

Science with ASKAP: the Australian square-kilometre-array pathfinder (2008)

Johnston, Simon, Bailes, Matthew, Bartel, Norbert, Baugh, Carlton, Bietenholz, Michael F., Blake, Chris, ...

The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries. The SKA will be 50 times more sensitive than any...

The discovery of an eccentric millisecond pulsar in the galactic plane (2008)

Champion, David J., Ransom, Scott M., Lazarus, Patrick, Camilo, Fernando, Kaspi, Victoria M., Nice, David J., ...

The evolution of binary systems is governed by their orbital properties and the stellar density of the local environment. Studies of neutron stars in binary star systems offer unique insights into...

PSR J1856+0245: arecibo discovery of a young, energetic pulsar coincident with the TeV gamma-ray source HESS J1857+026 (2008)

Hessels, Jason W., Nice, David J., Gaensler, Bryan M., Kaspi, Victoria M., Lorimer, Duncan R., Champion, David J., ...

We present the discovery of the Vela-like radio pulsar J1856+0245 in the Arecibo PALFA survey. PSR J1856+0245 has a spin period of 81 ms, a characteristic age of 21 kyr, and a spin-down luminosity...

and (2007)

David J. Nice, Eric M. Splaver, Ingrid H. Stairs

We report on nine years of timing observations of PSR J2019+2425, a millisecond pulsar in a wide 76.5 day orbit with a white dwarf. We measure a signicant change over time of the projected semi-major...

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...

Science with the Australian Square Kilometre Array Pathfinder (2007)

Johnston, Simon, Bailes, Matthew, Bartel, Norbert, Baugh, Carlton, Bietenholz, Michael F., Blake, Chris, ...

The future of centimetre and metre-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive than...

Science with the Australian Square Kilometre Array Pathfinder (2007)

Johnston, Simon, Bailes, Matthew, Bartel, Norbert, Baugh, Carlton, Bietenholz, Michael F., Blake, Chris, ...

The future of centimetre and metre-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive than...

Science with the Australian Square Kilometre Array Pathfinder (2007)

Johnston, Simon, Bailes, Matthew, Bartel, Norbert, Baugh, Carlton, Bietenholz, Michael F., Blake, Chris, ...

The future of centimetre and metre-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive than...

Science with the Australian Square Kilometre Array Pathfinder (2007)

Johnston, Simon, Bailes, Matthew, Bartel, Norbert, Baugh, Carlton, Bietenholz, Michael F., Blake, Chris, ...

The future of centimetre and metre-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive than...

Science with the Australian Square Kilometre Array Pathfinder (2007)

Johnston, Simon, Bailes, Matthew, Bartel, Norbert, Baugh, Carlton, Bietenholz, Michael F., Blake, Chris, ...

The future of centimetre and metre-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive than...

The Parallax and Proper Motion of PSR J0030+0451 (2006)

Lommen, Andrea N., Kipphorn, Richard A., Nice, David J., Splaver, Eric M., Stairs, Ingrid H., Backer, Donald C.

We report the parallax and proper motion of millisecond pulsar J0030+0451, one of thirteen known isolated millisecond pulsars in the disk of the Galaxy. We obtained more than 6 years of monthly data...

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...

Arecibo and the ALFA pulsar survey (2006)

Van Leeuwen, Joeri, Cordes, James M., Lorimer, Duncan R., Freire, Paulo C., Camilo, Fernando, Stairs, Ingrid H., ...

The recently started Arecibo L-band Feed Array (ALFA) pulsar survey aims to find ~1000 new pulsars. Due to its high time and frequency resolution the survey is especially sensitive to millisecond...

Arecibo pulsar survey using ALFA I : survey strategy and first discoveries (2006)

Cordes, James M., Freire, Paulo C., Lorimer, Duncan R., Camilo, Fernando, Champion, David J., Nice, David J., ...

We report results from the initial stage of a long-term pulsar survey of the Galactic plane using the Arecibo L-band Feed Array (ALFA), a seven-beam receiver operating at 1.4 GHz with 0.3 GHz...

Arecibo and the ALFA pulsar survey (2006)

Van Leeuwen, Joeri, Cordes, James M., Lorimer, Duncan R., Freire, Paulo C., Camilo, Fernando, Stairs, Ingrid H., ...

The recently started Arecibo L-band Feed Array (ALFA) pulsar survey aims to find ~1000 new pulsars. Due to its high time and frequency resolution the survey is especially sensitive to millisecond...

Arecibo pulsar survey using ALFA I : survey strategy and first discoveries (2006)

Cordes, James M., Freire, Paulo C., Lorimer, Duncan R., Camilo, Fernando, Champion, David J., Nice, David J., ...

We report results from the initial stage of a long-term pulsar survey of the Galactic plane using the Arecibo L-band Feed Array (ALFA), a seven-beam receiver operating at 1.4 GHz with 0.3 GHz...

Arecibo and the ALFA pulsar survey (2006)

Van Leeuwen, Joeri, Cordes, James M., Lorimer, Duncan R., Freire, Paulo C., Camilo, Fernando, Stairs, Ingrid H., ...

The recently started Arecibo L-band Feed Array (ALFA) pulsar survey aims to find ~1000 new pulsars. Due to its high time and frequency resolution the survey is especially sensitive to millisecond...

Arecibo pulsar survey using ALFA I : survey strategy and first discoveries (2006)

Cordes, James M., Freire, Paulo C., Lorimer, Duncan R., Camilo, Fernando, Champion, David J., Nice, David J., ...

We report results from the initial stage of a long-term pulsar survey of the Galactic plane using the Arecibo L-band Feed Array (ALFA), a seven-beam receiver operating at 1.4 GHz with 0.3 GHz...

Arecibo and the ALFA pulsar survey (2006)

Van Leeuwen, Joeri, Cordes, James M., Lorimer, Duncan R., Freire, Paulo C., Camilo, Fernando, Stairs, Ingrid H., ...

The recently started Arecibo L-band Feed Array (ALFA) pulsar survey aims to find ~1000 new pulsars. Due to its high time and frequency resolution the survey is especially sensitive to millisecond...

Arecibo pulsar survey using ALFA I : survey strategy and first discoveries (2006)

Cordes, James M., Freire, Paulo C., Lorimer, Duncan R., Camilo, Fernando, Champion, David J., Nice, David J., ...

We report results from the initial stage of a long-term pulsar survey of the Galactic plane using the Arecibo L-band Feed Array (ALFA), a seven-beam receiver operating at 1.4 GHz with 0.3 GHz...

Arecibo and the ALFA pulsar survey (2006)

Van Leeuwen, Joeri, Cordes, James M., Lorimer, Duncan R., Freire, Paulo C., Camilo, Fernando, Stairs, Ingrid H., ...

The recently started Arecibo L-band Feed Array (ALFA) pulsar survey aims to find ~1000 new pulsars. Due to its high time and frequency resolution the survey is especially sensitive to millisecond...

Arecibo pulsar survey using ALFA I : survey strategy and first discoveries (2006)

Cordes, James M., Freire, Paulo C., Lorimer, Duncan R., Camilo, Fernando, Champion, David J., Nice, David J., ...

We report results from the initial stage of a long-term pulsar survey of the Galactic plane using the Arecibo L-band Feed Array (ALFA), a seven-beam receiver operating at 1.4 GHz with 0.3 GHz...

Arecibo and the ALFA pulsar survey (2006)

Van Leeuwen, Joeri, Cordes, James M., Lorimer, Duncan R., Freire, Paulo C., Camilo, Fernando, Stairs, Ingrid H., ...

The recently started Arecibo L-band Feed Array (ALFA) pulsar survey aims to find ~1000 new pulsars. Due to its high time and frequency resolution the survey is especially sensitive to millisecond...

Arecibo pulsar survey using ALFA I : survey strategy and first discoveries (2006)

Cordes, James M., Freire, Paulo C., Lorimer, Duncan R., Camilo, Fernando, Champion, David J., Nice, David J., ...

We report results from the initial stage of a long-term pulsar survey of the Galactic plane using the Arecibo L-band Feed Array (ALFA), a seven-beam receiver operating at 1.4 GHz with 0.3 GHz...

A 2.1 Solar Mass Pulsar Measured by Relativistic Orbital Decay (2005)

Nice, David J., Splaver, Eric M., Stairs, Ingrid H., Loehmer, Oliver, Jessner, Axel, Kramer, Michael, ...

PSR J0751+1807 is a millisecond pulsar in a circular 6 hr binary system with a helium white dwarf secondary. Through high precision pulse timing measurements with the Arecibo and Effelsberg radio...

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...

Arecibo Measurements of Pulsar--White Dwarf Binaries: Evidence for Heavy Neutron Stars (2004)

Nice, David J., Splaver, Eric M., Stairs, Ingrid H.

We summarize constraints on neutron star masses from ongoing timing observations of pulsar-white dwarf binaries at Arecibo. The trend is toward pulsar masses larger than the canonical value of 1.35...

GBT Observations of Very Low Mass Binary Millisecond Pulsars: A Search for Eclipses (2004)

Nice, David J., Stairs, Ingrid H., Arzoumanian, Zaven

We searched for eclipses of two millisecond pulsars, PSR J1807-2459 and PSR B1908+00. These pulsars are in very low mass binary systems with orbital parameters similar to those of eclipsing binaries....

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...

Masses, Parallax, and Relativistic Timing of the PSR J1713+0747 Binary System (2004)

Splaver, Eric M., Nice, David J., Stairs, Ingrid H., Lommen, Andrea N., Backer, Donald C.

We report on 12 years of observations of PSR J1713+0747, a pulsar in a 68-day orbit with a white dwarf. Pulse times of arrival were measured with uncertainties as small as 200 ns. The timing data...

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...

Heavy Neutron Stars? A Status Report on Arecibo Timing of Four Pulsar-White Dwarf Systems (2003)

Nice, David J., Splaver, Eric M., Stairs, Ingrid H.

Relativistic phenomena (orbital precession, Shapiro delay, and/or orbital decay) have been measured in Arecibo timing observations of four pulsar-white dwarf binaries, leading to constraints on the...

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...

Testing General Relativity with Pulsar Timing (2003)

Ingrid H. Stairs

Pulsars of very different types, including isolated objects and binaries (with short- and long-period orbits, and white-dwarf and neutron-star companions) provide the means to test both the...

Testing General Relativity with Pulsar Timing (2003)

Stairs, Ingrid H.

Pulsars of very different types - isolated objects, and binaries with short- and long-period orbits, white-dwarf and neutron-star companions - provide the means to test both the predictions of...

A Young White Dwarf Companion to Pulsar 1620-26: Evidence for Early Planet Formation (2003)

Sigurdsson, Steinn, Richer, Harvey B., Hansen, Brad M., Stairs, Ingrid H., Thorsett, Stephen E.

The pulsar B1620-26 has two companions, one of stellar mass and one of planetary mass. We detected the stellar companion using Hubble Space Telescope observations. The color and magnitude of the...

Neutron Star Masses from Arecibo Timing Observations of Five Pulsar-White Dwarf Binary Systems (2002)

Nice, David J., Splaver, Eric M., Stairs, Ingrid H.

We have detected relativistic and/or kinematic post-Keplerian parameters of no fewer than five pulsar-white dwarf binary systems in long-term timing observations at Arecibo. We discuss the resulting...

Probing the Masses of the PSR J0621+1002 Binary System Through Relativistic Apsidal Motion (2002)

Splaver, Eric M., Nice, David J., Arzoumanian, Zaven, Camilo, Fernando, Lyne, Andrew G., Stairs, Ingrid H.

Orbital, spin and astrometric parameters of the millisecond pulsar PSR J0621+1002 have been determined through six years of timing observations at three radio telescopes. The chief result is a...

On the Mass and Inclination of the PSR J2019+2425 Binary System (2000)

Nice, David J., Splaver, Eric M., Stairs, Ingrid H.

We report on nine years of timing observations of PSR J2019+2425, a millisecond pulsar in a wide 76.5 day orbit with a white dwarf. We measure a significant change over time of the projected...