Search

Your search keyword '"Scott, Susan"' showing total 71 results
Start Over Author "Scott, Susan" Publisher american physical society
71 results on '"Scott, Susan"'

1. GW190412: Observation of a binary-black-hole coalescence with asymmetric masses

Author

Abbott, R., Abbott, T. D., Abraham, S, Acernese, F, Ackley, K, Adams, C, Adhikari, Rana X, Adya, Vaishali, Affeldt, C, Agathos, M., Agatsuma, K., Altin, Paul, Eichholz, Johannes, Forsyth, Perry, Grace, Benjamin, Holland, Nathan, Kijbunchoo, Nutsinee, McClelland, David, McManus, David, McRae, Terry, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Toyra, Daniel, Wade, Andrew, Ward, Robert, Wette, Karl, Yap, Min Jet, Abbott, R., Abbott, T. D., Abraham, S, Acernese, F, Ackley, K, Adams, C, Adhikari, Rana X, Adya, Vaishali, Affeldt, C, Agathos, M., Agatsuma, K., Altin, Paul, Eichholz, Johannes, Forsyth, Perry, Grace, Benjamin, Holland, Nathan, Kijbunchoo, Nutsinee, McClelland, David, McManus, David, McRae, Terry, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Toyra, Daniel, Wade, Andrew, Ward, Robert, Wette, Karl, and Yap, Min Jet

Abstract

We report the observation of gravitational waves from a binary-black-hole coalescence during the first two weeks of LIGO's and Virgo's third observing run. The signal was recorded on April 12, 2019 at 05∶30∶44 UTC with a network signal-to-noise ratio of 19. The binary is different from observations during the first two observing runs most notably due to its asymmetric masses: a ~ 30Mo black hole merged with a ~ 8Mo black hole companion. The more massive black hole rotated with a dimensionless spin magnitude between 0.22 and 0.60 (90% probability). Asymmetric systems are predicted to emit gravitational waves with stronger contributions from higher multipoles, and indeed we find strong evidence for gravitational radiation beyond the leading quadrupolar order in the observed signal. A suite of tests performed on GW190412 indicates consistency with Einstein's general theory of relativity. While the mass ratio of this system differs from all previous detections, we show that it is consistent with the population model of stellar binary black holes inferred from the first two observing runs.

Published
2020

2. Optically targeted search for gravitational waves emitted by core-collapse supernovae during the first and second observing runs of advanced LIGO and advanced Virgo

Author

Abbott, B. P., Abbott, R., Abbott, T. D., Abraham, S, Acernese, Fausto, Ackley, K, Adams, C, Adya, Vaishali, Affeldt, C, Agathos, M., Agatsuma, K., Altin, Paul, Eichholz, Johannes, Forsyth, Perry, Grace, Benjamin, Holland, Nathan, Kijbunchoo, Nutsinee, McClelland, David, McManus, David, McRae, Terry, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Abbott, B. P., Abbott, R., Abbott, T. D., Abraham, S, Acernese, Fausto, Ackley, K, Adams, C, Adya, Vaishali, Affeldt, C, Agathos, M., Agatsuma, K., Altin, Paul, Eichholz, Johannes, Forsyth, Perry, Grace, Benjamin, Holland, Nathan, Kijbunchoo, Nutsinee, McClelland, David, McManus, David, McRae, Terry, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, and Yap, Min Jet

Abstract

We present the results from a search for gravitational-wave transients associated with core-collapse supernovae observed within a source distance of approximately 20 Mpc during the first and second observing runs of Advanced LIGO and Advanced Virgo. No significant gravitational-wave candidate was detected. We report the detection efficiencies as a function of the distance for waveforms derived from multidimensional numerical simulations and phenomenological extreme emission models. The sources with neutrino-driven explosions are detectable at the distances approaching 5 kpc, and for magnetorotationally driven explosions the distances are up to 54 kpc. However, waveforms for extreme emission models are detectable up to 28 Mpc. For the first time, the gravitational-wave data enabled us to exclude part of the parameter spaces of two extreme emission models with confidence up to 83%, limited by coincident data coverage. Besides, using ad hoc harmonic signals windowed with Gaussian envelopes, we constrained the gravitational-wave energy emitted during core collapse at the levels of 4.27×10⁻⁴ M⊙c2 and 1.28×10⁻¹ M⊙c² for emissions at 235 and 1304 Hz, respectively. These constraints are 2 orders of magnitude more stringent than previously derived in the corresponding analysis using initial LIGO, initial Virgo, and GEO 600 data.

Published
2020

3. Tests of General Relativity with GW170817

Author

Abbott, Benjamin P., Abbott, R., Abbott, T. D., Acernese, Fausto, Ackley, K., Adams, C., Adams, T., Addesso, Paolo, Adhikari, Rana X., Adya, Vaishali, Altin, Paul, Chow, Jong, Forsyth, Perry, Holland, Nathan, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thien, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Abbott, Benjamin P., Abbott, R., Abbott, T. D., Acernese, Fausto, Ackley, K., Adams, C., Adams, T., Addesso, Paolo, Adhikari, Rana X., Adya, Vaishali, Altin, Paul, Chow, Jong, Forsyth, Perry, Holland, Nathan, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thien, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, and Yap, Min Jet

Abstract

The recent discovery by Advanced LIGO and Advanced Virgo of a gravitational wave signal from a binary neutron star inspiral has enabled tests of general relativity (GR) with this new type of source. This source, for the first time, permits tests of strong-field dynamics of compact binaries in the presence of matter. In this Letter, we place constraints on the dipole radiation and possible deviations from GR in the post-Newtonian coefficients that govern the inspiral regime. Bounds on modified dispersion of gravitational waves are obtained; in combination with information from the observed electromagnetic counterpart we can also constrain effects due to large extra dimensions. Finally, the polarization content of the gravitational wave signal is studied. The results of all tests performed here show good agreement with GR.

Published
2019

4. Narrow-band search for gravitational waves from known pulsars using the second LIGO observing run

Author

Abbott, Benjamin P., Abbott, Richard, Abbott, T. D., Abraham, S., Acernese, Fausto, Ackley, K., Adams, C., Adhikari, Rana X., Adya, Vaishali, Affeldt, C., Altin, Paul, Forsyth, Perry, Kijbunchoo, Nutsinee, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Holland, Nathan, Abbott, Benjamin P., Abbott, Richard, Abbott, T. D., Abraham, S., Acernese, Fausto, Ackley, K., Adams, C., Adhikari, Rana X., Adya, Vaishali, Affeldt, C., Altin, Paul, Forsyth, Perry, Kijbunchoo, Nutsinee, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, and Holland, Nathan

Abstract

Isolated spinning neutron stars, asymmetric with respect to their rotation axis, are expected to be sources of continuous gravitational waves. The most sensitive searches for these sources are based on accurate matched filtering techniques that assume the continuous wave to be phase locked with the pulsar beamed emission. While matched filtering maximizes the search sensitivity, a significant signal-to-noise ratio loss will happen in the case of a mismatch between the assumed and the true signal phase evolution. Narrowband algorithms allow for a small mismatch in the frequency and spin-down values of the pulsar while coherently integrating the entire dataset. In this paper, we describe a narrow-band search using LIGO O2 data for the continuous wave emission of 33 pulsars. No evidence of a continuous wave signal is found, and upper limits on the gravitational wave amplitude over the analyzed frequency and spin-down ranges are computed for each of the targets. In this search, we surpass the spin-down limit, namely, the maximum rotational energy loss due to gravitational waves emission for some of the pulsars already present in the LIGO O1 narrow-band search, such as J1400 − 6325, J1813 − 1246, J1833 − 1034, J1952 þ 3252, and for new targets such as J0940 − 5428 and J1747 − 2809. For J1400 − 6325, J1833 − 1034, and J1747 − 2809, this is the first time the spin-down limit is surpassed.

Published
2019

5. All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO O2 data

Author

Abbott, Benjamin P., Abbott, Richard, Abbott, T., Abraham, S., Acernese, F., Ackley, K., Adams, Catherine Anne, Adhikari, Rana, Adya, V., Affeldt, C., Altin, Paul, Forsyth, Perry, Kijbunchoo, Nutsinee, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Holland, Nathan, Abbott, Benjamin P., Abbott, Richard, Abbott, T., Abraham, S., Acernese, F., Ackley, K., Adams, Catherine Anne, Adhikari, Rana, Adya, V., Affeldt, C., Altin, Paul, Forsyth, Perry, Kijbunchoo, Nutsinee, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, and Holland, Nathan

Abstract

We present results of an all-sky search for continuous gravitational waves (CWs), which can be produced by fast spinning neutron stars with an asymmetry around their rotation axis, using data from the second observing run of the Advanced LIGO detectors. Three different semicoherent methods are used to search in a gravitational-wave frequency band from 20 to 1922 Hz and a first frequency derivative from −1 × 10−8 to 2 × 10−9 Hz=s. None of these searches has found clear evidence for a CW signal, so upper limits on the gravitational-wave strain amplitude are calculated, which for this broad range in parameter space are the most sensitive ever achieved.

Published
2019

6. All-sky search for short gravitational-wave bursts in the second Advanced LIGO and Advanced Virgo run

Author

Abbott, B. P., Abbott, Richard, Abbott, T, Abraham, S, Acernese, Fausto, Ackley, K, Adams, C, Adhikari, Rana X, Affeldt, C, Agathos, M., Agatsuma, K., Altin, Paul, Eichholz, Johannes, Forsyth, Perry, Kijbunchoo, Nutsinee, McClelland, David, McRae, Terry, McManus, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Adya, Vaishali, Holland, Nathan, Grace, Benjamin, Abbott, B. P., Abbott, Richard, Abbott, T, Abraham, S, Acernese, Fausto, Ackley, K, Adams, C, Adhikari, Rana X, Affeldt, C, Agathos, M., Agatsuma, K., Altin, Paul, Eichholz, Johannes, Forsyth, Perry, Kijbunchoo, Nutsinee, McClelland, David, McRae, Terry, McManus, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Adya, Vaishali, Holland, Nathan, and Grace, Benjamin

Abstract

We present the results of a search for short-duration gravitational-wave transients in the data from the second observing run of Advanced LIGO and Advanced Virgo. We search for gravitational-wave transients with a duration of milliseconds to approximately one second in the 32–4096 Hz frequency band with minimal assumptions about the signal properties, thus targeting a wide variety of sources. We also perform a matched-filter search for gravitational-wave transients from cosmic string cusps for which the waveform is well modeled. The unmodeled search detected gravitational waves from several binary black hole mergers which have been identified by previous analyses. No other significant events have been found by either the unmodeled search or the cosmic string search. We thus present the search sensitivities for a variety of signal waveforms and report upper limits on the source rate density as a function of the characteristic frequency of the signal. These upper limits are a factor of 3 lower than the first observing run, with a 50% detection probability for gravitational-wave emissions with energies of ∼10−9 M⊙c2 at 153 Hz. For the search dedicated to cosmic string cusps we consider several loop distribution models, and present updated constraints from the same search done in the first observing run.

Published
2019

7. Constraining the p-Mode-g-Mode Tidal Instability with GW170817

Author

Abbott, B. P., Abbott, R., Abbott, T. D., Altin, Paul, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Holland, Nathan, Abbott, B. P., Abbott, R., Abbott, T. D., Altin, Paul, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, and Holland, Nathan

Abstract

We analyze the impact of a proposed tidal instability coupling p modes and g modes within neutron stars on GW170817. This nonresonant instability transfers energy from the orbit of the binary to internal modes of the stars, accelerating the gravitational-wave driven inspiral. We model the impact of this instability on the phasing of the gravitational wave signal using three parameters per star: An overall amplitude, a saturation frequency, and a spectral index. Incorporating these additional parameters, we compute the Bayes factor (lnB!pgpg) comparing our p-g model to a standard one. We find that the observed signal is consistent with waveform models that neglect p-g effects, with lnB!pgpg=0.03-0.58+0.70 (maximum a posteriori and 90% credible region). By injecting simulated signals that do not include p-g effects and recovering them with the p-g model, we show that there is a ≃50% probability of obtaining similar lnB!pgpg even when p-g effects are absent. We find that the p-g amplitude for 1.4 MâŠneutron stars is constrained to less than a few tenths of the theoretical maximum, with maxima a posteriori near one-Tenth this maximum and p-g saturation frequency ∼70 Hz. This suggests that there are less than a few hundred excited modes, assuming they all saturate by wave breaking. For comparison, theoretical upper bounds suggest a103 modes saturate by wave breaking. Thus, the measured constraints only rule out extreme values of the p-g parameters. They also imply that the instability dissipates a1051 erg over the entire inspiral, i.e., less than a few percent of the energy radiated as gravitational waves.

Published
2019

8. Search for Subsolar-Mass Ultracompact Binaries in Advanced LIGO's First Observing Run

Author

Abbott, B., Abbott, Richard, Abbott, T., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, Rana X., Adya, Vaishali, Altin, Paul, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Holland, Nathan, Abbott, B., Abbott, Richard, Abbott, T., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, Rana X., Adya, Vaishali, Altin, Paul, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, and Holland, Nathan

Abstract

We present the first Advanced LIGO and Advanced Virgo search for ultracompact binary systems with component masses between 0.2 M-circle dot-1.0 M-circle dot using data taken between September 12, 2015 and January 19, 2016. We find no viable gravitational wave candidates. Our null result constrains the coalescence rate of monochromatic (delta function) distributions of nonspinning (0.2 M-circle dot, 0.2 M-circle dot) ultracompact binaries to be less than 1.0 x 10(6) Gpc(-3) yr(-1) and the coalescence rate of a similar distribution of (1.0 M-circle dot, 1.0 M-circle dot) ultracompact binaries to be less than 1.9 x Gpc(-3) yr(-1) (at 90% confidence). Neither black holes nor neutron stars are expected to form below similar to 1 M-circle dot through conventional stellar evolution, though it has been proposed that similarly low mass black holes could be formed primordially through density fluctuations in the early Universe and contribute to the dark matter density. The interpretation of our constraints in the primordial black hole dark matter paradigm is highly model dependent; however, under a particular primordial black hole binary formation scenario we constrain monochromatic primordial black hole populations of 0.2 M-circle dot to be less than 33% of the total dark matter density and monochromatic populations of 1.0 M-circle dot to be less than 5% of the dark matter density. The latter strengthens the presently placed bounds from microlensing surveys of massive compact halo objects (MACHOs) provided by the MACHO and EROS Collaborations.

Published
2018

9. Full band all-sky search for periodic gravitational waves in the O1 LIGO data

Author

Abbott, Benjamin P., Abbott, Robert, Abbott, Thomas D., Altin, Paul, Chow, Jong, Forsyth, Perry, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Kijbunchoo, Nutsinee, Manske, Michael, Acernese, Fausto, Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, Rana X., Adya, V., Abbott, Benjamin P., Abbott, Robert, Abbott, Thomas D., Altin, Paul, Chow, Jong, Forsyth, Perry, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Kijbunchoo, Nutsinee, Manske, Michael, Acernese, Fausto, Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, Rana X., and Adya, V.

Abstract

We report on a new all-sky search for periodic gravitational waves in the frequency band 475–2000 Hz and with a frequency time derivative in the range of ½−1.0; þ0.1 × 10−8 Hz=s. Potential signals could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our Galaxy. This search uses the data from Advanced LIGO’s first observational run O1. No gravitational-wave signals were observed, and upper limits were placed on their strengths. For completeness, results from the separately published low-frequency search 20–475 Hz are included as well. Our lowest upper limit on worst-case (linearly polarized) strain amplitude h0 is ∼4 × 10−25 near 170 Hz, while at the high end of our frequency range, we achieve a worst-case upper limit of 1.3 × 10−24. For a circularly polarized source (most favorable orientation), the smallest upper limit obtained is ∼1.5 × 10−25.

Published
2018

10. First Search for Nontensorial Gravitational Waves from Known Pulsars

Author

Abott, Benjamin P., Abbott, Robert, Abbott, Thomas D., Acernese, Fausto, Ackley, K., Adams, T., Addesso, P., Adhikari, Rana X., Adya, V., Affeldt, C., Altin, Paul, Chow, Jong, Forsyth, Perry, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Yap, Min Jet, Abott, Benjamin P., Abbott, Robert, Abbott, Thomas D., Acernese, Fausto, Ackley, K., Adams, T., Addesso, P., Adhikari, Rana X., Adya, V., Affeldt, C., Altin, Paul, Chow, Jong, Forsyth, Perry, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, and Yap, Min Jet

Abstract

We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves with up to six different polarizations. This analysis is sensitive to continuous signals of scalar, vector, or tensor polarizations, and does not rely on any specific theory of gravity. After searching data from the first observation run of the advanced LIGO detectors for signals at twice the rotational frequency of 200 known pulsars, we find no evidence of gravitational waves of any polarization. We report the first upper limits for scalar and vector strains, finding values comparable in magnitude to previously published limits for tensor strain. Our results may be translated into constraints on specific alternative theories of gravity.

Published
2018

11. GW170817: Measurements of Neutron Star Radii and Equation of State

Author

Abbott, Benjamin P., Abbott, Richard, Abbott, T., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, Rana X., Adya, Vaishali, Altin, Paul, Chow, Jong, Forsyth, Perry, Holland, Nicole, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Holland, Nathan, Abbott, Benjamin P., Abbott, Richard, Abbott, T., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, Rana X., Adya, Vaishali, Altin, Paul, Chow, Jong, Forsyth, Perry, Holland, Nicole, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, and Holland, Nathan

Abstract

On 17 August 2017, the LIGO and Virgo observatories made the first direct detection of gravitational waves from the coalescence of a neutron star binary system. The detection of this gravitational-wave signal, GW170817, offers a novel opportunity to directly probe the properties of matter at the extreme conditions found in the interior of these stars. The initial, minimal-assumption analysis of the LIGO and Virgo data placed constraints on the tidal effects of the coalescing bodies, which were then translated to constraints on neutron star radii. Here, we expand upon previous analyses by working under the hypothesis that both bodies were neutron stars that are described by the same equation of state and have spins within the range observed in Galactic binary neutron stars. Our analysis employs two methods: the use of equation-of-state-insensitive relations between various macroscopic properties of the neutron stars and the use of an efficient parametrization of the defining function p(rho) of the equation of state itself. From the LIGO and Virgo data alone and the first method, we measure the two neutron star radii as R-1 = 10.8(-1.7)(+2.0) km for the heavier star and R-2 = 10.7(-1.5)(+2.1) km for the lighter star at the 90% credible level. If we additionally require that the equation of state supports neutron stars with masses larger than 1.97 M-circle dot as required from electromagnetic observations and employ the equation-of-state parametrization, we further constrain R-1 = 11.9(-1.4)(+1.4) km and R-2 = 11.9(-1.4)(+1.4) km at the 90% credible level. Finally, we obtain constraints on p(rho) at supranuclear densities, with pressure at twice nuclear saturation density measured at 3.5(-1.7)(+2.7) x 10(34) dyn cm(-2) at the 90% level.

Published
2018

12. Search for intermediate mass black hole binaries in the first observing run of Advanced LIGO

Author

Altin, Paul, Chow, Jong, Forsyth, Perry, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Abbott, B., Abbott, Robert, Adhikari, Rana, Arai, Koji, Barayoga, J. C. B., Barish, Barry, Berger, B. K., Billingsley, G., Blackburn, James Kent, Bork, R., Ehrens, P., Etzel, T., Heptonstall, A., Korth, W. Zach, Kozak, D., Lazzarini, A., Maros, E., Meshkov, S., Pedraza, M., Altin, Paul, Chow, Jong, Forsyth, Perry, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Abbott, B., Abbott, Robert, Adhikari, Rana, Arai, Koji, Barayoga, J. C. B., Barish, Barry, Berger, B. K., Billingsley, G., Blackburn, James Kent, Bork, R., Ehrens, P., Etzel, T., Heptonstall, A., Korth, W. Zach, Kozak, D., Lazzarini, A., Maros, E., Meshkov, S., and Pedraza, M.

Abstract

During their first observational run, the two Advanced LIGO detectors attained an unprecedented sensitivity, resulting in the first direct detections of gravitational-wave signals produced by stellar-mass binary black hole systems. This paper reports on an all-sky search for gravitational waves (GWs) from merging intermediate mass black hole binaries (IMBHBs). The combined results from two independent search techniques were used in this study: the first employs a matched-filter algorithm that uses a bank of filters covering the GW signal parameter space, while the second is a generic search for GW transients (bursts). No GWs from IMBHBs were detected; therefore, we constrain the rate of several classes of IMBHB mergers. The most stringent limit is obtained for black holes of individual mass 100 M⊙, with spins aligned with the binary orbital angular momentum. For such systems, the merger rate is constrained to be less than 0.93 Gpc−3 yr−1 in comoving units at the 90% confidence level, an improvement of nearly 2 orders of magnitude over previous upper limits.

Published
2017

13. GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral

Author

Abbott, B, Abbott, Robert, Abbott, T, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana, Adya, V, Affeldt, C, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Altin, Paul, Abbott, B, Abbott, Robert, Abbott, T, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana, Adya, V, Affeldt, C, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, and Altin, Paul

Abstract

On August 17, 2017 at 12:41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral. The signal, GW170817, was detected with a combined signal-to-noise ratio of 32.4 and a false-alarm-rate estimate of less than one per 8.0 x 10(4) years. We infer the component masses of the binary to be between 0.86 and 2.26 M-circle dot, in agreement with masses of known neutron stars. Restricting the component spins to the range inferred in binary neutron stars, we find the component masses to be in the range 1.17-1.60 M-circle dot, with the total mass of the system 2.74(-0.01)(+0.04) M-circle dot. The source was localized within a sky region of 28 deg(2) (90% probability) and had a luminosity distance of 40(-14)(+8) Mpc, the closest and most precisely localized gravitational-wave signal yet. The association with the gamma-ray burst GRB 170817A, detected by Fermi-GBM 1.7 s after the coalescence, corroborates the hypothesis of a neutron star merger and provides the first direct evidence of a link between these mergers and short gamma-ray bursts. Subsequent identification of transient counterparts across the electromagnetic spectrum in the same location further supports the interpretation of this event as a neutron star merger. This unprecedented joint gravitational and electromagnetic observation provides insight into astrophysics, dense matter, gravitation, and cosmology.

Published
2017

14. First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data

Author

Abbott, Benjamin P., Abbott, Richard, Abbott, T, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana X, Adya, V, Altin, Paul, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Abbott, Benjamin P., Abbott, Richard, Abbott, T, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana X, Adya, V, Altin, Paul, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, and Yap, Min Jet

Abstract

Spinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters obtained from electromagnetic observations, can be carried out. Matched filtering maximizes the signal-to-noise (SNR) ratio, but a large sensitivity loss is expected in case of even a very small mismatch between the assumed and the true signal parameters. For this reason, narrow-band analysis methods have been developed, allowing a fully coherent search for gravitational waves from known pulsars over a fraction of a hertz and several spin-down values. In this paper we describe a narrow-band search of 11 pulsars using data from Advanced LIGO's first observing run. Although we have found several initial outliers, further studies show no significant evidence for the presence of a gravitational wave signal. Finally, we have placed upper limits on the signal strain amplitude lower than the spin-down limit for 5 of the 11 targets over the bands searched; in the case of J1813-1749 the spin-down limit has been beaten for the first time. For an additional 3 targets, the median upper limit across the search bands is below the spin-down limit. This is the most sensitive narrow-band search for continuous gravitational waves carried out so far.

Published
2017

15. GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence

Author

Abbott, Benjamin P., Abbott, Richard, Abbott, T. D., Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana X, Adya, V, Altin, Paul, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, Yap, Min Jet, Abbott, Benjamin P., Abbott, Richard, Abbott, T. D., Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana X, Adya, V, Altin, Paul, Chow, Jong, Forsyth, Perry, Kijbunchoo, Nutsinee, Mansell, Georgia, Manske, Michael, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Ward, Robert, Wette, Karl, and Yap, Min Jet

Abstract

On August 14, 2017 at 10:30:43 UTC, the Advanced Virgo detector and the two Advanced LIGO detectors coherently observed a transient gravitational-wave signal produced by the coalescence of two stellar mass black holes, with a false-alarm rate of less than or similar to 1 in 27 000 years. The signal was observed with a three-detector network matched-filter signal-to-noise ratio of 18. The inferred masses of the initial black holes are 30.5(-3.0)(+5.7)M(circle dot) and 25.3(-4.2)(+2.8) M-circle dot (at the 90% credible level). The luminosity distance of the source is 540(-210)(+130) Mpc, corresponding to a redshift of z = 0.11(-0.04)(+0.03). A network of three detectors improves the sky localization of the source, reducing the area of the 90% credible region from 1160 deg(2) using only the two LIGO detectors to 60 deg(2) using all three detectors. For the first time, we can test the nature of gravitational-wave polarizations from the antenna response of the LIGO-Virgo network, thus enabling a new class of phenomenological tests of gravity.

Published
2017

16. Improved Analysis of GW150914 Using a Fully Spin-Precessing Waveform Model

Author

Abbott, B, Abbott, Richard, Abbott, T, Abernathy, M, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, T, Adhikari, Rana X, Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Abbott, B, Abbott, Richard, Abbott, T, Abernathy, M, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, T, Adhikari, Rana X, Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, and Ward, Robert

Abstract

This paper presents updated estimates of source parameters for GW150914, a binary black-hole coalescence event detected by the Laser Interferometer Gravitational-wave Observatory (LIGO) in 2015 [Abbott et al. Phys. Rev. Lett. 116, 061102 (2016).]. Abbott et al. [Phys. Rev. Lett. 116, 241102 (2016).] presented parameter estimation of the source using a 13-dimensional, phenomenological precessing-spin model (precessing IMRPhenom) and an 11-dimensional nonprecessing effective-one-body (EOB) model calibrated to numerical-relativity simulations, which forces spin alignment (nonprecessing EOBNR). Here, we present new results that include a 15-dimensional precessing-spin waveform model (precessing EOBNR) developed within the EOB formalism. We find good agreement with the parameters estimated previously [Abbott et al. Phys. Rev. Lett. 116, 241102 (2016).], and we quote updated component masses of 35+5−3M⊙ and 30+3−4M ⊙ (where errors correspond to 90% symmetric credible intervals). We also present slightly tighter constraints on the dimensionless spin magnitudes of the two black holes, with a primary spin estimate < 0.65 and a secondary spin estimate < 0.75 at 90% probability. Abbott et al. [Phys. Rev. Lett. 116, 241102 (2016).] estimated the systematic parameter-extraction errors due to waveform-model uncertainty by combining the posterior probability densities of precessing IMRPhenom and nonprecessing EOBNR. Here, we find that the two precessing-spin models are in closer agreement, suggesting that these systematic errors are smaller than previously quoted.

Published
2016

17. High-energy neutrino follow-up search of gravitational wave event GW150914 with ANTARES and IceCube

Author

Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Yap, Min Jet, Ward, Robert, Aartsen, M. G., Ackermann, M., Abbott, T., Acernese, F., Ackley, K., Adams, C., Allen, B., Barone, F., Bartos, I., Basti, A., Brau, J. E., Bulten, H. J., Cannon, Kipp, Favata, Marc, Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Yap, Min Jet, Ward, Robert, Aartsen, M. G., Ackermann, M., Abbott, T., Acernese, F., Ackley, K., Adams, C., Allen, B., Barone, F., Bartos, I., Basti, A., Brau, J. E., Bulten, H. J., Cannon, Kipp, and Favata, Marc

Abstract

We present the high-energy-neutrino follow-up observations of the first gravitational wave transient GW150914 observed by the Advanced LIGO detectors on September 14, 2015. We search for coincident neutrino candidates within the data recorded by the IceCube and Antares neutrino detectors. A possible joint detection could be used in targeted electromagnetic follow-up observations, given the significantly better angular resolution of neutrino events compared to gravitational waves. We find no neutrino candidates in both temporal and spatial coincidence with the gravitational wave event. Within ±500 s of the gravitational wave event, the number of neutrino candidates detected by IceCube and Antares were three and zero, respectively. This is consistent with the expected atmospheric background, and none of the neutrino candidates were directionally coincident with GW150914. We use this nondetection to constrain neutrino emission from the gravitational-wave event.

Published
2016

18. First low frequency all-sky search for continuous gravitational wave signals

Author

Chow, Jong, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Aasi, J., Abbott, B., Abbott, T., Araya, M., Barish, Barry, Barsotti, L., Bartos, I., Basti, A., Billingsley, G., Blackburn, James Kent, Bork, R., Bulten, H. J., Charlton, Philip, Coward, D., Dhurandhar, S., Dooley, Katherine L., Ehrens, P., Etzel, T., Factourovich, M., Fairhurst, S., Frei, Z., Fritschel, Peter, Genin, E., Giaime, J., Goetz, E., Heptonstall, A., Jones, D. I., Kells, W., Korth, W. Zach, Kozak, D., Lazzarini, A., MacInnis, M., Mageswaran, M., Mandic, V., Maros, E., Martynov, D., Mavalvala, Nergis, Melatos, Andrew, Mendell, G., Meshkov, S., Ottaway, D. J., Pedraza, M., Penn, S., Reed, C. M., Reitze, D., Riles, K., Sammut, L., Saulson, P., Schofield, R., Sigg, D., Sintes, A., Souradeep, T., Staley, A., Summerscales, T. Z., Torrie, Calum, Unnikrishnan, C. S., Vass, S., Veitch, Peter John, Vocca, H., Vorvick, C., Whitcomb, Stanley Ernest, Whiting, B. F., Ackley, K., Adams, T., Chow, Jong, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Aasi, J., Abbott, B., Abbott, T., Araya, M., Barish, Barry, Barsotti, L., Bartos, I., Basti, A., Billingsley, G., Blackburn, James Kent, Bork, R., Bulten, H. J., Charlton, Philip, Coward, D., Dhurandhar, S., Dooley, Katherine L., Ehrens, P., Etzel, T., Factourovich, M., Fairhurst, S., Frei, Z., Fritschel, Peter, Genin, E., Giaime, J., Goetz, E., Heptonstall, A., Jones, D. I., Kells, W., Korth, W. Zach, Kozak, D., Lazzarini, A., MacInnis, M., Mageswaran, M., Mandic, V., Maros, E., Martynov, D., Mavalvala, Nergis, Melatos, Andrew, Mendell, G., Meshkov, S., Ottaway, D. J., Pedraza, M., Penn, S., Reed, C. M., Reitze, D., Riles, K., Sammut, L., Saulson, P., Schofield, R., Sigg, D., Sintes, A., Souradeep, T., Staley, A., Summerscales, T. Z., Torrie, Calum, Unnikrishnan, C. S., Vass, S., Veitch, Peter John, Vocca, H., Vorvick, C., Whitcomb, Stanley Ernest, Whiting, B. F., Ackley, K., and Adams, T.

Abstract

In this paper we present the results of the first low frequency all-sky search of continuous gravitational wave signals conducted on Virgo VSR2 and VSR4 data. The search covered the full sky, a frequency range between 20 and 128 Hz with a range of spin-down between −1.0×10−10 and +1.5×10−11 Hz/s, and was based on a hierarchical approach. The starting point was a set of short fast Fourier transforms, of length 8192 s, built from the calibrated strain data. Aggressive data cleaning, in both the time and frequency domains, has been done in order to remove, as much as possible, the effect of disturbances of instrumental origin. On each data set a number of candidates has been selected, using the FrequencyHough transform in an incoherent step. Only coincident candidates among VSR2 and VSR4 have been examined in order to strongly reduce the false alarm probability, and the most significant candidates have been selected. The criteria we have used for candidate selection and for the coincidence step greatly reduce the harmful effect of large instrumental artifacts. Selected candidates have been subject to a follow-up by constructing a new set of longer fast Fourier transforms followed by a further incoherent analysis, still based on the FrequencyHough transform. No evidence for continuous gravitational wave signals was found, and therefore we have set a population-based joint VSR2-VSR4 90% confidence level upper limit on the dimensionless gravitational wave strain in the frequency range between 20 and 128 Hz. This is the first all-sky search for continuous gravitational waves conducted, on data of ground-based interferometric detectors, at frequencies below 50 Hz. We set upper limits in the range between about 10−24 and 2×10−23 at most frequencies. Our upper limits on signal strain show an improvement of up to a factor of ∼2 with respect to the results of previous all-sky searches at frequencies below 80 Hz.

Published
2016

19. Search for transient gravitational waves in coincidence with short-duration radio transients during 2007-2013

Author

Altin, Paul, Abbott, T, Acernese, F, Ackley, K, Adams, C, Allen, B, Barone, F, Bartos, I, Basti, A, Brau, J E, Bulten, H.J., Byer, Robert L, Cao, J, Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Frei, Z, Gehrels, N, Genin, E, Giaime, J, Goetz, E, Howell, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Munch, Jesper, Ottaway, D J, Penn, S, Ward, Robert, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Wen, L, Whiting, B F, Kramer, M, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Yap, Min Jet, Chua, Sheon, Cannon, Kipp, Favata, Marc, Altin, Paul, Abbott, T, Acernese, F, Ackley, K, Adams, C, Allen, B, Barone, F, Bartos, I, Basti, A, Brau, J E, Bulten, H.J., Byer, Robert L, Cao, J, Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Frei, Z, Gehrels, N, Genin, E, Giaime, J, Goetz, E, Howell, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Munch, Jesper, Ottaway, D J, Penn, S, Ward, Robert, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Wen, L, Whiting, B F, Kramer, M, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Yap, Min Jet, Chua, Sheon, Cannon, Kipp, and Favata, Marc

Abstract

We present an archival search for transient gravitational-wave bursts in coincidence with 27 single-pulse triggers from Green Bank Telescope pulsar surveys, using the LIGO, Virgo, and GEO interferometer network. We also discuss a check for gravitational-wave signals in coincidence with Parkes fast radio bursts using similar methods. Data analyzed in these searches were collected between 2007 and 2013. Possible sources of emission of both short-duration radio signals and transient gravitational-wave emission include starquakes on neutron stars, binary coalescence of neutron stars, and cosmic string cusps. While no evidence for gravitational-wave emission in coincidence with these radio transients was found, the current analysis serves as a prototype for similar future searches using more sensitive second-generation interferometers.

Published
2016

20. Search of the Orion spur for continuous gravitational waves using a loosely coherent algorithm on data from LIGO interferometers

Author

Chow, Jong, McClelland, David, Mansell, Georgia, Nguyen, Thanh, Rabeling, David, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Abbott, T, Bartos, I, Basti, A, Bulten, H.J., Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Frei, Z, Genin, E, Giaime, J, Goetz, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Whiting, B F, Ackley, K, Adams, T, Scott, Susan M, Ward, Robert, Chua, S S Y, Chow, Jong, McClelland, David, Mansell, Georgia, Nguyen, Thanh, Rabeling, David, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Abbott, T, Bartos, I, Basti, A, Bulten, H.J., Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Frei, Z, Genin, E, Giaime, J, Goetz, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Whiting, B F, Ackley, K, Adams, T, Scott, Susan M, Ward, Robert, and Chua, S S Y

Abstract

We report results of a wideband search for periodic gravitational waves from isolated neutron stars within the Orion spur towards both the inner and outer regions of our Galaxy. As gravitational waves interact very weakly with matter, the search is unimpeded by dust and concentrations of stars. One search disk (A) is 6.87° in diameter and centered on 20h10m54.71s+33°33′25.29′′, and the other (B) is 7.45° in diameter and centered on 8h35m20.61s−46°49′25.151′′. We explored the frequency range of 50–1500 Hz and frequency derivative from 0 to −5×10−9 Hz/s. A multistage, loosely coherent search program allowed probing more deeply than before in these two regions, while increasing coherence length with every stage. Rigorous follow-up parameters have winnowed the initial coincidence set to only 70 candidates, to be examined manually. None of those 70 candidates proved to be consistent with an isolated gravitational-wave emitter, and 95% confidence level upper limits were placed on continuous-wave strain amplitudes. Near 169 Hz we achieve our lowest 95% C.L. upper limit on the worst-case linearly polarized strain amplitude h0 of 6.3×10−25, while at the high end of our frequency range we achieve a worst-case upper limit of 3.4×10−24 for all polarizations and sky locations.

Published
2016

21. First targeted search for gravitational-wave bursts from core-collapse supernovae in data of first-generation laser interferometer detectors

Author

Abbott, B., Abbott, Richard, Abbott, T. D., Abernathy, M. R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Yap, Min Jet, Adhikari, Rana X., Abbott, B., Abbott, Richard, Abbott, T. D., Abernathy, M. R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Yap, Min Jet, and Adhikari, Rana X.

Abstract

We present results from a search for gravitational-wave bursts coincident with two core-collapse supernovae observed optically in 2007 and 2011. We employ data from the Laser Interferometer Gravitational-wave Observatory (LIGO), the Virgo gravitational-wave observatory, and the GEO 600 gravitational-wave observatory. The targeted core-collapse supernovae were selected on the basis of (1) proximity (within approximately 15 Mpc), (2) tightness of observational constraints on the time of core collapse that defines the gravitational-wave search window, and (3) coincident operation of at least two interferometers at the time of core collapse.We find no plausible gravitational-wave candidates.We present the probability of detecting signals from both astrophysically well-motivated and more speculative gravitational-wave emission mechanisms as a function of distance from Earth, and discuss the implications for the detection of gravitational waves from core-collapse supernovae by the upgraded Advanced LIGO and Virgo detectors.

Published
2016

22. Comprehensive all-sky search for periodic gravitational waves in the sixth science run LIGO data

Author

Abbott, B., Abbott, Richard, Abbott, T, Abernathy, M, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana, Adya, V, Affeldt, C, Agathos, M, Agatsuma, K, Aggarwal, N, Altin, Paul, Chow, Jong, Chua, S, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Abbott, B., Abbott, Richard, Abbott, T, Abernathy, M, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana, Adya, V, Affeldt, C, Agathos, M, Agatsuma, K, Aggarwal, N, Altin, Paul, Chow, Jong, Chua, S, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, and Ward, Robert

Abstract

We report on a comprehensive all-sky search for periodic gravitational waves in the frequency band 100–1500 Hz and with a frequency time derivative in the range of [−1.18,+1.00]×10−8 Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our galaxy. This search uses the data from the initial LIGO sixth science run and covers a larger parameter space with respect to any past search. A Loosely Coherent detection pipeline was applied to follow up weak outliers in both Gaussian (95% recovery rate) and non-Gaussian (75% recovery rate) bands. No gravitational wave signals were observed, and upper limits were placed on their strength. Our smallest upper limit on worst-case (linearly polarized) strain amplitude h0 is 9.7×10−25 near 169 Hz, while at the high end of our frequency range we achieve a worst-case upper limit of 5.5×10−24. Both cases refer to all sky locations and entire range of frequency derivative values.

Published
2016

23. Results of the deepest all-sky survey for continuous gravitational waves on LIGO S6 data running on the Einstein@Home volunteer distributed computing project

Author

Abbott, B, Abbott, Robert, Abbott, T, Abernathy, M, Acernese, Fausto, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana, Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Abbott, B, Abbott, Robert, Abbott, T, Abernathy, M, Acernese, Fausto, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, Rana, Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, McRae, Terry, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, and Ward, Robert

Abstract

We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the S6 LIGO science run. The search was possible thanks to the computing power provided by the volunteers of the Einstein@Home distributed computing project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population. At the frequency of best strain sensitivity, between 170.5 and 171 Hz we set a 90% confidence upper limit of 5.5×10−25, while at the high end of our frequency range, around 505 Hz, we achieve upper limits ≃10−24. At 230 Hz we can exclude sources with ellipticities greater than 10−6 within 100 pc of Earth with fiducial value of the principal moment of inertia of 10 38kgm2. If we assume a higher (lower) gravitational wave spin-down we constrain farther (closer) objects to higher (lower) ellipticities

Published
2016

24. All-sky search for long-duration gravitational wave transients with initial LIGO

Author

Chow, Jong, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Abbott, T, Adams, C, Bartos, I, Basti, A, Bulten, H.J., Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Frei, Z, Genin, E, Giaime, J, Goetz, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Whiting, B F, Ackley, K, Chow, Jong, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Abbott, T, Adams, C, Bartos, I, Basti, A, Bulten, H.J., Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Frei, Z, Genin, E, Giaime, J, Goetz, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Whiting, B F, and Ackley, K

Abstract

We present the results of a search for long-duration gravitational wave transients in two sets of data collected by the LIGO Hanford and LIGO Livingston detectors between November 5, 2005 and September 30, 2007, and July 7, 2009 and October 20, 2010, with a total observational time of 283.0 days and 132.9 days, respectively. The search targets gravitational wave transients of duration 10–500 s in a frequency band of 40–1000 Hz, with minimal assumptions about the signal waveform, polarization, source direction, or time of occurrence. All candidate triggers were consistent with the expected background; as a result we set 90% confidence upper limits on the rate of long-duration gravitational wave transients for different types of gravitational wave signals. For signals from black hole accretion disk instabilities, we set upper limits on the source rate density between 3.4×10−5 and 9.4×10−4 Mpc−3 yr−1 at 90% confidence. These are the first results from an all-sky search for unmodeled long-duration transient gravitational waves.

Published
2016

25. Tests of General Relativity with GW150914

Author

Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Rabeling, David, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Abbott, T, Acernese, F, McManus, David, Ackley, K, Adams, C, Allen, B, Barone, F, Bartos, I, Basti, A, Brau, J E, Bulten, H.J., Byer, Robert L, Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Gehrels, N, Genin, E, Giaime, J, Goetz, E, Howell, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Wen, L, Whiting, B F, Scott, Susan M, Yap, Min Jet, Ward, Robert, Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Rabeling, David, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Abbott, T, Acernese, F, McManus, David, Ackley, K, Adams, C, Allen, B, Barone, F, Bartos, I, Basti, A, Brau, J E, Bulten, H.J., Byer, Robert L, Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Gehrels, N, Genin, E, Giaime, J, Goetz, E, Howell, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Wen, L, Whiting, B F, Scott, Susan M, Yap, Min Jet, and Ward, Robert

Abstract

The LIGO detection of GW150914 provides an unprecedented opportunity to study the two-body motion of a compact-object binary in the large-velocity, highly nonlinear regime, and to witness the final merger of the binary and the excitation of uniquely relativistic modes of the gravitational field. We carry out several investigations to determine whether GW150914 is consistent with a binary black-hole merger in general relativity. We find that the final remnant’s mass and spin, as determined from the low-frequency (inspiral) and high-frequency (postinspiral) phases of the signal, are mutually consistent with the binary black-hole solution in general relativity. Furthermore, the data following the peak of GW150914 are consistent with the least-damped quasinormal mode inferred from the mass and spin of the remnant black hole. By using waveform models that allow for parametrized general-relativity violations during the inspiral and merger phases, we perform quantitative tests on the gravitational-wave phase in the dynamical regime and we determine the first empirical bounds on several high-order post-Newtonian coefficients. We constrain the graviton Compton wavelength, assuming that gravitons are dispersed in vacuum in the same way as particles with mass, obtaining a 90%-confidence lower bound of 1013 km. In conclusion, within our statistical uncertainties, we find no evidence for violations of general relativity in the genuinely strong-field regime of gravity.

Published
2016

26. GW150914: The advanced LIGO detectors in the era of first discoveries

Author

Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Yap, Min Jet, Abbott, T, Acernese, F, Adams, C, Bartos, I, Basti, A, Brau, J E, Bulten, H.J., Byer, Robert L, Cao, J, Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Genin, E, Giaime, J, Goetz, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Whiting, B F, Ackley, K, Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, McManus, David, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Yap, Min Jet, Abbott, T, Acernese, F, Adams, C, Bartos, I, Basti, A, Brau, J E, Bulten, H.J., Byer, Robert L, Cao, J, Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Genin, E, Giaime, J, Goetz, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Whiting, B F, and Ackley, K

Abstract

Following a major upgrade, the two advanced detectors of the Laser Interferometer Gravitational-wave Observatory (LIGO) held their first observation run between September 2015 and January 2016. With a strain sensitivity of 10−23/Hz−−−√ at 100 Hz, the product of observable volume and measurement time exceeded that of all previous runs within the first 16 days of coincident observation. On September 14, 2015, the Advanced LIGO detectors observed a transient gravitational-wave signal determined to be the coalescence of two black holes [B. P. Abbott et al., Phys. Rev. Lett. 116, 061102 (2016)], launching the era of gravitational-wave astronomy. The event, GW150914, was observed with a combined signal-to-noise ratio of 24 in coincidence by the two detectors. Here, we present the main features of the detectors that enabled this observation. At full sensitivity, the Advanced LIGO detectors are designed to deliver another factor of 3 improvement in the signal-to-noise ratio for binary black hole systems similar in mass to GW150914.

Published
2016

27. Properties of the Binary Black Hole Merger GW150914

Author

Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, Abbott, T, Acernese, F, Ackley, K, Adams, C, Allen, B, Barone, F, McManus, David, Bartos, I, Basti, A, Brau, J E, Bulten, H.J., Byer, Robert L, Cao, J, Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Frei, Z, Gehrels, N, Genin, E, Giaime, J, Goetz, E, Howell, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Wen, L, Whiting, B F, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Yap, Min Jet, Ward, Robert, Altin, Paul, Chow, Jong, Mansell, Georgia, McClelland, David, Abbott, T, Acernese, F, Ackley, K, Adams, C, Allen, B, Barone, F, McManus, David, Bartos, I, Basti, A, Brau, J E, Bulten, H.J., Byer, Robert L, Cao, J, Charlton, Philip, Coward, D, Dhurandhar, S, Dooley, Katherine L, Factourovich, M, Fairhurst, S, Frei, Z, Gehrels, N, Genin, E, Giaime, J, Goetz, E, Howell, E, Jones, D I, Mandic, V., Melatos, Andrew, Mendell, G, Ottaway, D J, Penn, S, Reed, C M, Reitze, D, Riles, K, Sammut, L, Saulson, P, Schofield, R, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Summerscales, T.Z., Unnikrishnan, C S, Veitch, Peter John, Vocca, H, Vorvick, C, Wen, L, Whiting, B F, Nguyen, Thanh, Rabeling, David, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Yap, Min Jet, and Ward, Robert

Abstract

On September 14, 2015, the Laser Interferometer Gravitational-Wave Observatory (LIGO) detected a gravitational-wave transient (GW150914); we characterize the properties of the source and its parameters. The data around the time of the event were analyzed coherently across the LIGO network using a suite of accurate waveform models that describe gravitational waves from a compact binary system in general relativity. GW150914 was produced by a nearly equal mass binary black hole of masses 36+5−4M⊙ and 29+4−4M⊙; for each parameter we report the median value and the range of the 90% credible interval. The dimensionless spin magnitude of the more massive black hole is bound to be <0.7 (at 90% probability). The luminosity distance to the source is 410+160−180 Mpc, corresponding to a redshift 0.09+0.03−0.04 assuming standard cosmology. The source location is constrained to an annulus section of 610 deg2, primarily in the southern hemisphere. The binary merges into a black hole of mass 62+4−4M⊙ and spin 0.67+0.05−0.07. This black hole is significantly more massive than any other inferred from electromagnetic observations in the stellar-mass regime.

Published
2016

28. Directed search for gravitational waves from Scorpius X-1 with initial LIGO data

Author

Abbott, T, Acernese, F, Adams, C, Adams, T, Allen, B, Anderson, WG, Barone, F, Bartos, I, Basti, A, Bertolini, A, Blair, David Gerald, Brau, J E, Bulten, H.J., Charlton, Philip, Chow, Jong, Christensen, N, Coward, D, Dhurandhar, S, Factourovich, M, Fairhurst, S, Frei, Z, Frolov, V, Genin, E, Giaime, J, Greenhalgh, R. J. S., Gustafson, R, Iyer, B R, Kawabe, Keita, Landry, M, Mandic, V., Mansell, Georgia, McClelland, David, Meadors, G.D., Melatos, Andrew, Mendell, G, Mueller, Guido, Munch, Jesper, Nguyen, Thanh, Ottaway, D J, Owen, Benjamin, Penn, S, Rajalakshmi, G, Rabeling, David, Reed, C M, Reitze, D, Riles, K, Sammut, L, Sathyaprakash, B, Saulson, P, Savage, R, Schofield, R, Scott, Susan M, Sengupta, Anand S, Shaddock, Daniel, Sigg, D, Sintes, A, Slagmolen, Bram, Souradeep, T, Staley, A, Summerscales, T.Z., Tanner, D B, Unnikrishnan, C S, Van Den Brand, J., Veitch, Peter John, Vocca, H, Vorvick, C, Wade, Andrew, Ward, Robert, Wen, L, Whiting, B F, Abbott, T, Acernese, F, Adams, C, Adams, T, Allen, B, Anderson, WG, Barone, F, Bartos, I, Basti, A, Bertolini, A, Blair, David Gerald, Brau, J E, Bulten, H.J., Charlton, Philip, Chow, Jong, Christensen, N, Coward, D, Dhurandhar, S, Factourovich, M, Fairhurst, S, Frei, Z, Frolov, V, Genin, E, Giaime, J, Greenhalgh, R. J. S., Gustafson, R, Iyer, B R, Kawabe, Keita, Landry, M, Mandic, V., Mansell, Georgia, McClelland, David, Meadors, G.D., Melatos, Andrew, Mendell, G, Mueller, Guido, Munch, Jesper, Nguyen, Thanh, Ottaway, D J, Owen, Benjamin, Penn, S, Rajalakshmi, G, Rabeling, David, Reed, C M, Reitze, D, Riles, K, Sammut, L, Sathyaprakash, B, Saulson, P, Savage, R, Schofield, R, Scott, Susan M, Sengupta, Anand S, Shaddock, Daniel, Sigg, D, Sintes, A, Slagmolen, Bram, Souradeep, T, Staley, A, Summerscales, T.Z., Tanner, D B, Unnikrishnan, C S, Van Den Brand, J., Veitch, Peter John, Vocca, H, Vorvick, C, Wade, Andrew, Ward, Robert, Wen, L, and Whiting, B F

Abstract

We present results of a search for continuously emitted gravitational radiation, directed at the brightest low-mass x-ray binary, Scorpius X-1. Our semicoherent analysis covers 10 days of LIGO S5 data ranging from 50-550 Hz, and performs an incoherent sum of coherent F-statistic power distributed amongst frequency-modulated orbital sidebands. All candidates not removed at the veto stage were found to be consistent with noise at a 1% false alarm rate. We present Bayesian 95% confidence upper limits on gravitational-wave strain amplitude using two different prior distributions: a standard one, with no a priori assumptions about the orientation of Scorpius X-1; and an angle-restricted one, using a prior derived from electromagnetic observations. Median strain upper limits of 1.3×10-24 and 8×10-25 are reported at 150 Hz for the standard and angle-restricted searches respectively. This proof-of-principle analysis was limited to a short observation time by unknown effects of accretion on the intrinsic spin frequency of the neutron star, but improves upon previous upper limits by factors of ∼1.4 for the standard, and 2.3 for the angle-restricted search at the sensitive region of the detector.

Published
2015

29. Multimessenger search for sources of gravitational waves and high-energy neutrinos: Initial results for LIGO-Virgo and IceCube

Author

Aartsen, M. G., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., Ahrens, M., Altmann, D., Anderson, T., Arguelles, C., Arlen, D. C., Chow, Jong, Chua, Sheon, Dickson, James, Lam, Ping Koy, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Auffenberg, J., Aartsen, M. G., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., Ahrens, M., Altmann, D., Anderson, T., Arguelles, C., Arlen, D. C., Chow, Jong, Chua, Sheon, Dickson, James, Lam, Ping Koy, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, and Auffenberg, J.

Abstract

We report the results of a multimessenger search for coincident signals from the LIGO and Virgo gravitational-wave observatories and the partially completed IceCube high-energy neutrino detector, including periods of joint operation between 2007-2010. These include parts of the 2005-2007 run and the 2009-2010 run for LIGO-Virgo, and IceCube's observation periods with 22, 59 and 79 strings. We find no significant coincident events, and use the search results to derive upper limits on the rate of joint sources for a range of source emission parameters. For the optimistic assumption of gravitational-wave emission energy of 10-2M c2 at ∼150Hz with ∼60ms duration, and high-energy neutrino emission of 1051erg comparable to the isotropic gamma-ray energy of gamma-ray bursts, we limit the source rate below 1.6×10-2Mpc-3yr-1. We also examine how combining information from gravitational waves and neutrinos will aid discovery in the advanced gravitational-wave detector era.

Published
2014

30. Methods and results of a search for gravitational waves associated with gamma-ray bursts using the GEO 600, LIGO, and Virgo detectors

Author

Chow, Jong, Chua, Sheon, Dickson, James, Lam, Ping Koy, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Adams, C, Allen, B, Barone, F, Bartos, I, Basti, A, Beker, M G, Bertolini, A, Blair, David Gerald, Bose, S, Brau, J E, Bulten, H.J., Burman, R, Cao, J, Castaldi, G, Charlton, Philip, Christensen, N, Coward, D, Dhurandhar, S, Factourovich, M, Fairhurst, S, Finn, Lee, Frolov, V, Gehrels, N, Genin, E, Giaime, J, Greenhalgh, R. J. S., Gustafson, R, Hammer, D, Hewitson, M, Iyer, B R, Kawabe, Keita, Landry, M, Meadors, G.D., Mendell, G, Mueller, Guido, Ottaway, D J, Owen, Benjamin, Penn, S, Rajalakshmi, G, Reed, C M, Reitze, D, Riles, K, Sammut, L, Sathyaprakash, B, Saulson, P, Savage, R, Schofield, R, Sengupta, Anand S, Sigg, D, Sintes, A, Souradeep, T, Summerscales, T.Z., Susmithan, S, Tanner, D B, Trias, M., Unnikrishnan, C S, Van Den Brand, J., Veitch, Peter John, Vinet, J-Y, Vocca, H, Vorvick, C, Wen, L, Whiting, B F, Acernese, F, Abbott, T, Staley, A, Chow, Jong, Chua, Sheon, Dickson, James, Lam, Ping Koy, Mansell, Georgia, McClelland, David, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Adams, C, Allen, B, Barone, F, Bartos, I, Basti, A, Beker, M G, Bertolini, A, Blair, David Gerald, Bose, S, Brau, J E, Bulten, H.J., Burman, R, Cao, J, Castaldi, G, Charlton, Philip, Christensen, N, Coward, D, Dhurandhar, S, Factourovich, M, Fairhurst, S, Finn, Lee, Frolov, V, Gehrels, N, Genin, E, Giaime, J, Greenhalgh, R. J. S., Gustafson, R, Hammer, D, Hewitson, M, Iyer, B R, Kawabe, Keita, Landry, M, Meadors, G.D., Mendell, G, Mueller, Guido, Ottaway, D J, Owen, Benjamin, Penn, S, Rajalakshmi, G, Reed, C M, Reitze, D, Riles, K, Sammut, L, Sathyaprakash, B, Saulson, P, Savage, R, Schofield, R, Sengupta, Anand S, Sigg, D, Sintes, A, Souradeep, T, Summerscales, T.Z., Susmithan, S, Tanner, D B, Trias, M., Unnikrishnan, C S, Van Den Brand, J., Veitch, Peter John, Vinet, J-Y, Vocca, H, Vorvick, C, Wen, L, Whiting, B F, Acernese, F, Abbott, T, and Staley, A

Abstract

In this paper we report on a search for short-duration gravitational wave bursts in the frequency range 64 Hz-1792 Hz associated with gamma-ray bursts (GRBs), using data from GEO 600 and one of the LIGO or Virgo detectors. We introduce the method of a linear search grid to analyze GRB events with large sky localization uncertainties, for example the localizations provided by the Fermi Gamma-ray Burst Monitor (GBM). Coherent searches for gravitational waves (GWs) can be computationally intensive when the GRB sky position is not well localized, due to the corrections required for the difference in arrival time between detectors. Using a linear search grid we are able to reduce the computational cost of the analysis by a factor of O(10) for GBM events. Furthermore, we demonstrate that our analysis pipeline can improve upon the sky localization of GRBs detected by the GBM, if a high-frequency GW signal is observed in coincidence. We use the method of the linear grid in a search for GWs associated with 129 GRBs observed satellite-based gamma-ray experiments between 2006 and 2011. The GRBs in our sample had not been previously analyzed for GW counterparts. A fraction of our GRB events are analyzed using data from GEO 600 while the detector was using squeezed-light states to improve its sensitivity; this is the first search for GWs using data from a squeezed-light interferometric observatory. We find no evidence for GW signals, either with any individual GRB in this sample or with the population as a whole. For each GRB we place lower bounds on the distance to the progenitor, under an assumption of a fixed GW emission energy of 10-2Mc2, with a median exclusion distance of 0.8 Mpc for emission at 500 Hz and 0.3 Mpc at 1 kHz. The reduced computational cost associated with a linear search grid will enable rapid searches for GWs associated with Fermi GBM events once the advanced LIGO and Virgo detectors begin operation.

Published
2014

31. Search for gravitational radiation from intermediate mass black hole binaries in data from the second LIGO-Virgo joint science run

Author

Chow, Jong, Chua, Sheon, McClelland, David, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Van Den Brand, J., Billingsley, G, Barish, Barry, Barone, F, Barsotti, L, Bartos, I, Basti, A, Beker, M G, Bertolini, A, Beyersdorf, P T, Black, E, Blackburn, James Kent, Blair, David Gerald, Blom, M, Bork, R, Brau, J E, Bulten, H.J., Burman, R, Cao, J, Charlton, Philip, Christensen, N, Coyne, D, Dhurandhar, S, Ehrens, P, Etzel, T, Evans, M, Factourovich, M, Fairhurst, S, Finn, Lee, Fritschel, Peter, Frolov, V, Gehrels, N, Genin, E, Giaime, J, Greenhalgh, R. J. S., Gustafson, R, Vass, S, Hammer, D, Heptonstall, A, Hewitson, M, Iyer, B R, Kawabe, Keita, Kells, W, Khazanov, E, King, P, Kozak, D, Vinet, J-Y, Landry, M, Lazzarini, A, MacInnis, M, Mageswaran, M, Mailand, K, Maros, E, Marx, Jay, Mavalvala, Nergis, Meadors, G.D., Vocca, H, Mendell, G, Meshkov, S, Mittleman, R, Mueller, Guido, Ottaway, D J, Owen, Benjamin, Pedraza, M, Penn, S, Rajalakshmi, G, Vorvick, C, Reed, C M, Reitze, D, Riles, K, Sammut, L, Sathyaprakash, B, Saulson, P, Savage, R, Schofield, R, Sengupta, Anand S, Wallace, L, Shoemaker, D, Sigg, D, Sintes, A, Souradeep, T, Summerscales, T.Z., Susmithan, S, Tanner, D B, Torrie, Calum, Unnikrishnan, C S, Weinstein, A, Wen, L, Whiting, B F, Acernese, F, Aasi, J, Abbott, T, Martynov, D, Staley, A, Abbott, Robert, Adams, C, Allen, B, Anderson, S B, Araya, M, Chow, Jong, Chua, Sheon, McClelland, David, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wade, Andrew, Ward, Robert, Van Den Brand, J., Billingsley, G, Barish, Barry, Barone, F, Barsotti, L, Bartos, I, Basti, A, Beker, M G, Bertolini, A, Beyersdorf, P T, Black, E, Blackburn, James Kent, Blair, David Gerald, Blom, M, Bork, R, Brau, J E, Bulten, H.J., Burman, R, Cao, J, Charlton, Philip, Christensen, N, Coyne, D, Dhurandhar, S, Ehrens, P, Etzel, T, Evans, M, Factourovich, M, Fairhurst, S, Finn, Lee, Fritschel, Peter, Frolov, V, Gehrels, N, Genin, E, Giaime, J, Greenhalgh, R. J. S., Gustafson, R, Vass, S, Hammer, D, Heptonstall, A, Hewitson, M, Iyer, B R, Kawabe, Keita, Kells, W, Khazanov, E, King, P, Kozak, D, Vinet, J-Y, Landry, M, Lazzarini, A, MacInnis, M, Mageswaran, M, Mailand, K, Maros, E, Marx, Jay, Mavalvala, Nergis, Meadors, G.D., Vocca, H, Mendell, G, Meshkov, S, Mittleman, R, Mueller, Guido, Ottaway, D J, Owen, Benjamin, Pedraza, M, Penn, S, Rajalakshmi, G, Vorvick, C, Reed, C M, Reitze, D, Riles, K, Sammut, L, Sathyaprakash, B, Saulson, P, Savage, R, Schofield, R, Sengupta, Anand S, Wallace, L, Shoemaker, D, Sigg, D, Sintes, A, Souradeep, T, Summerscales, T.Z., Susmithan, S, Tanner, D B, Torrie, Calum, Unnikrishnan, C S, Weinstein, A, Wen, L, Whiting, B F, Acernese, F, Aasi, J, Abbott, T, Martynov, D, Staley, A, Abbott, Robert, Adams, C, Allen, B, Anderson, S B, and Araya, M

Abstract

This paper reports on an unmodeled, all-sky search for gravitational waves from merging intermediate mass black hole binaries (IMBHB). The search was performed on data from the second joint science run of the LIGO and Virgo detectors (July 2009-October 2010) and was sensitive to IMBHBs with a range up to ∼200Mpc, averaged over the possible sky positions and inclinations of the binaries with respect to the line of sight. No significant candidate was found. Upper limits on the coalescence-rate density of nonspinning IMBHBs with total masses between 100 and 450M and mass ratios between 0.25 and 1 were placed by combining this analysis with an analogous search performed on data from the first LIGO-Virgo joint science run (November 2005-October 2007). The most stringent limit was set for systems consisting of two 88M black holes and is equal to 0.12Mpc-3Myr-1 at the 90% confidence level. This paper also presents the first estimate, for the case of an unmodeled analysis, of the impact on the search range of IMBHB spin configurations: the visible volume for IMBHBs with nonspinning components is roughly doubled for a population of IMBHBs with spins aligned with the binary's orbital angular momentum and uniformly distributed in the dimensionless spin parameter up to 0.8, whereas an analogous population with antialigned spins decreases the visible volume by ∼20%.

Published
2014

32. Search for gravitational waves from binary black hole inspiral, merger, and ringdown in LIGO-Virgo data from 2009-2010

Author

Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Abbott, Robert, Adhikari, Rana, Bork, R, Coyne, D, Heefner, J, Heptonstall, A, Mailand, K, Marx, Jay, Howell, E, Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Abbott, Robert, Adhikari, Rana, Bork, R, Coyne, D, Heefner, J, Heptonstall, A, Mailand, K, Marx, Jay, and Howell, E

Abstract

We report a search for gravitational waves from the inspiral, merger and ringdown of binary black holes (BBH) with total mass between 25 and 100 solar masses, in data taken at the LIGO and Virgo observatories between July 7, 2009 and October 20, 2010. The maximum sensitive distance of the detectors over this period for a (20,20)M⊙ coalescence was 300 Mpc. No gravitational wave signals were found. We thus report upper limits on the astrophysical coalescence rates of BBH as a function of the component masses for nonspinning components, and also evaluate the dependence of the search sensitivity on component spins aligned with the orbital angular momentum. We find an upper limit at 90% confidence on the coalescence rate of BBH with nonspinning components of mass between 19 and 28M ⊙ of 3.3×10-7 mergers Mpc -3 yr-1.

Published
2013

33. Search for long-lived gravitational-wave transients coincident with long gamma-ray bursts

Author

Chow, Jong, Chua, Sheon, Inta, Ra, McClelland, David, Miller, John, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stochino, Alberto, Lantz, B, Unnikrishnan, C S, Vass, S, Veitch, Peter John, Vyachanin, S, Waldman, Sam J, Wallace, L, Wen, L, Whitcomb, Stanley Ernest, Mitrofanov, V P, Barsotti, L, Cook, D, Abadie, J, Abbott, B, Abbott, Robert, Adams, C, Adhikari, Rana, Allen, B, Anderson, S B, Araya, M, Ward, Robert, Barker, D, Coward, D, Bartos, I, Beyersdorf, P T, Brau, J E, Bilenko, I A, Billingsley, G, Blackburn, James Kent, Bork, R, Bose, S, Braginsky, V, Byer, Robert L, Coyne, D, Charlton, Philip, Creighton, J D E, Dhurandhar, S, Dumas, J-C, Ehrens, P, King, P, Etzel, T, Finn, Lee, Lazzarini, A, Fairhurst, S, Frey, R, Fritschel, Peter, Frolov, V, Fyffe, M, Giaime, J, Gray, C, Greenhalgh, R. J. S., Gustafson, R, Hammer, D, Lormand, M, Hanson, J, Heefner, J, Heptonstall, A, Hosken, Dave, Kissel, Jeffrey S, Howell, E, Johnson, W W, Kalogera, V, Katsavounidis, E, Kells, W, Lubinski, M, Kozak, D, MacInnis, M, Mageswaran, M, Mailand, K, Mittleman, R, Maros, E, Marx, Jay, Melatos, Andrew, Mavalvala, Nergis, Aasi, J, Abbott, T, Acernese, F, Basti, A, Beker, M G, Bertolini, A, Blom, M, Bulten, H.J., Evans, M, Mendell, G, Factourovich, M, Genin, E, Kawabe, Keita, Landry, M, Mandic, V., Martynov, D, Meadors, G.D., Schofield, R, Staley, A, Van Den Brand, J., Meshkov, S, Vinet, J-Y, Vorvick, C, Ottaway, D J, Owen, Benjamin, Pedraza, M, Penn, S, Rajalakshmi, G, Reed, C M, Reitze, D, Sammut, L, Riles, K, Sathyaprakash, B, Saulson, P, Schwinberg, P, Sengupta, Anand S, Shoemaker, D, Siemens, X, Sigg, D, Sintes, A, Souradeep, T, Summerscales, T.Z., Strigin, S, Whiting, B F, Wade, Andrew, Susmithan, S, Torrie, Calum, Chow, Jong, Chua, Sheon, Inta, Ra, McClelland, David, Miller, John, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stochino, Alberto, Lantz, B, Unnikrishnan, C S, Vass, S, Veitch, Peter John, Vyachanin, S, Waldman, Sam J, Wallace, L, Wen, L, Whitcomb, Stanley Ernest, Mitrofanov, V P, Barsotti, L, Cook, D, Abadie, J, Abbott, B, Abbott, Robert, Adams, C, Adhikari, Rana, Allen, B, Anderson, S B, Araya, M, Ward, Robert, Barker, D, Coward, D, Bartos, I, Beyersdorf, P T, Brau, J E, Bilenko, I A, Billingsley, G, Blackburn, James Kent, Bork, R, Bose, S, Braginsky, V, Byer, Robert L, Coyne, D, Charlton, Philip, Creighton, J D E, Dhurandhar, S, Dumas, J-C, Ehrens, P, King, P, Etzel, T, Finn, Lee, Lazzarini, A, Fairhurst, S, Frey, R, Fritschel, Peter, Frolov, V, Fyffe, M, Giaime, J, Gray, C, Greenhalgh, R. J. S., Gustafson, R, Hammer, D, Lormand, M, Hanson, J, Heefner, J, Heptonstall, A, Hosken, Dave, Kissel, Jeffrey S, Howell, E, Johnson, W W, Kalogera, V, Katsavounidis, E, Kells, W, Lubinski, M, Kozak, D, MacInnis, M, Mageswaran, M, Mailand, K, Mittleman, R, Maros, E, Marx, Jay, Melatos, Andrew, Mavalvala, Nergis, Aasi, J, Abbott, T, Acernese, F, Basti, A, Beker, M G, Bertolini, A, Blom, M, Bulten, H.J., Evans, M, Mendell, G, Factourovich, M, Genin, E, Kawabe, Keita, Landry, M, Mandic, V., Martynov, D, Meadors, G.D., Schofield, R, Staley, A, Van Den Brand, J., Meshkov, S, Vinet, J-Y, Vorvick, C, Ottaway, D J, Owen, Benjamin, Pedraza, M, Penn, S, Rajalakshmi, G, Reed, C M, Reitze, D, Sammut, L, Riles, K, Sathyaprakash, B, Saulson, P, Schwinberg, P, Sengupta, Anand S, Shoemaker, D, Siemens, X, Sigg, D, Sintes, A, Souradeep, T, Summerscales, T.Z., Strigin, S, Whiting, B F, Wade, Andrew, Susmithan, S, and Torrie, Calum

Abstract

Long gamma-ray bursts (GRBs) have been linked to extreme core-collapse supernovae from massive stars. Gravitational waves (GW) offer a probe of the physics behind long GRBs. We investigate models of long-lived (∼10-1000 s) GW emission associated with th

Published
2013

34. Parameter estimation for compact binary coalescence signals with the first generation gravitational-wave detector network

Author

Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Smith-Lefebvre, Nicolas, Slagmolen, Bram, Blackburn, James Kent, Blair, David Gerald, Bork, R, Bose, S, Owen, Benjamin, Braginsky, V, Brau, J E, Byer, Robert L, Camp, J, Hewitson, M, Cao, J, Corbitt, T, Charlton, Philip, Chung, C. T.Y., Cook, D, Coward, D, Dhurandhar, S, Coyne, D, Creighton, J D E, DeBra, D, King, P, Dumas, J-C, Dwyer, Sheila, Ehrens, P, Etzel, T, Heefner, J, Fairhurst, S, Finn, Lee, Frey, R, Fritschel, Peter, Frolov, V, Howell, E, Kells, W, Fyffe, M, Giaime, J, Gray, C, Greenhalgh, R. J. S., Heptonstall, A, Gustafson, R, Hammer, D, Hanson, J, Kalogera, V, Katsavounidis, E, Kissel, Jeffrey S, Kozak, D, Lantz, B, Melatos, Andrew, Lazzarini, A, Strigin, S, Leonor, I, Lindquist, P, Lockerbie, N.A., Lormand, M, Pedraza, M, Lubinski, M, MacInnis, M, Mageswaran, M, Mailand, K, Maros, E, Torrie, Calum, Marx, Jay, Mavalvala, Nergis, Melissinos, A, Mendell, G, Meshkov, S, Mitrofanov, V P, Mittleman, R, Penn, S, Reed, C M, Riles, K, Summerscales, T.Z., Sammut, L, Sathyaprakash, B, Saulson, P, Schwinberg, P, Shapiro, Brett, Shoemaker, D, Siemens, X, Sigg, D, Sintes, A, Susmithan, S, Talukder, D, Vass, S, Veitch, Peter John, Waldman, Sam J, Wallace, L, Allen, B, Wang, Xiaofeng, Wen, L, Whitcomb, Stanley Ernest, Whiting, B F, Zhang, L, Ottaway, D J, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Shaddock, Daniel, Abbott, Robert, Adams, C, Adhikari, Rana, Aasi, J, Acernese, F, Barone, F, Basti, A, Beker, M G, Blom, M, Bulten, H.J., Barker, D, Evans, M, Factourovich, M, Genin, E, Kawabe, Keita, Landry, M, Mandic, V., Meadors, G.D., Schofield, R, Vinet, J-Y, Vorvick, C, Anderson, S B, Arai, Koji, Araya, M, Barsotti, L, Bartos, I, Beyersdorf, P T, Bilenko, I A, Billingsley, G, Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Smith-Lefebvre, Nicolas, Slagmolen, Bram, Blackburn, James Kent, Blair, David Gerald, Bork, R, Bose, S, Owen, Benjamin, Braginsky, V, Brau, J E, Byer, Robert L, Camp, J, Hewitson, M, Cao, J, Corbitt, T, Charlton, Philip, Chung, C. T.Y., Cook, D, Coward, D, Dhurandhar, S, Coyne, D, Creighton, J D E, DeBra, D, King, P, Dumas, J-C, Dwyer, Sheila, Ehrens, P, Etzel, T, Heefner, J, Fairhurst, S, Finn, Lee, Frey, R, Fritschel, Peter, Frolov, V, Howell, E, Kells, W, Fyffe, M, Giaime, J, Gray, C, Greenhalgh, R. J. S., Heptonstall, A, Gustafson, R, Hammer, D, Hanson, J, Kalogera, V, Katsavounidis, E, Kissel, Jeffrey S, Kozak, D, Lantz, B, Melatos, Andrew, Lazzarini, A, Strigin, S, Leonor, I, Lindquist, P, Lockerbie, N.A., Lormand, M, Pedraza, M, Lubinski, M, MacInnis, M, Mageswaran, M, Mailand, K, Maros, E, Torrie, Calum, Marx, Jay, Mavalvala, Nergis, Melissinos, A, Mendell, G, Meshkov, S, Mitrofanov, V P, Mittleman, R, Penn, S, Reed, C M, Riles, K, Summerscales, T.Z., Sammut, L, Sathyaprakash, B, Saulson, P, Schwinberg, P, Shapiro, Brett, Shoemaker, D, Siemens, X, Sigg, D, Sintes, A, Susmithan, S, Talukder, D, Vass, S, Veitch, Peter John, Waldman, Sam J, Wallace, L, Allen, B, Wang, Xiaofeng, Wen, L, Whitcomb, Stanley Ernest, Whiting, B F, Zhang, L, Ottaway, D J, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Shaddock, Daniel, Abbott, Robert, Adams, C, Adhikari, Rana, Aasi, J, Acernese, F, Barone, F, Basti, A, Beker, M G, Blom, M, Bulten, H.J., Barker, D, Evans, M, Factourovich, M, Genin, E, Kawabe, Keita, Landry, M, Mandic, V., Meadors, G.D., Schofield, R, Vinet, J-Y, Vorvick, C, Anderson, S B, Arai, Koji, Araya, M, Barsotti, L, Bartos, I, Beyersdorf, P T, Bilenko, I A, and Billingsley, G

Abstract

Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational-wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model select

Published
2013

35. Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data

Author

Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Veitch, Peter John, Vass, S, Vinet, J-Y, Anderson, S B, Vorvick, C, Adhikari, Rana, Araya, M, Barsotti, L, Bartos, I, Beyersdorf, P T, Bilenko, I A, Finn, Lee, Billingsley, G, Blackburn, James Kent, Bose, S, Bork, R, Byer, Robert L, Slagmolen, Bram, Braginsky, V, Brau, J E, Charlton, Philip, Corbitt, T, Frey, R, Coward, D, Coyne, D, Creighton, J D E, DeBra, D, Dhurandhar, S, Dumas, J-C, Dwyer, Sheila, Ehrens, P, Etzel, T, Fairhurst, S, Fritschel, Peter, Frolov, V, Fyffe, M, Gray, C, Giaime, J, Stefszky, Michael, Greenhalgh, R. J. S., Hammer, D, Mageswaran, M, Gustafson, R, Hanson, J, Heefner, J, Heptonstall, A, Hewitson, M, Howell, E, Ivanov, A, Kalogera, V, Katsavounidis, E, Kells, W, Lubinski, M, Khazanov, E, King, P, Kissel, Jeffrey S, Kozak, D, Lantz, B, Lazzarini, A, Leonor, I, Lindquist, P, Lormand, M, Lockerbie, N.A., MacInnis, M, Mailand, K, Maros, E, Marx, Jay, Mavalvala, Nergis, Melatos, Andrew, Melissinos, A, Mendell, G, Waldman, Sam J, Meshkov, S, Mitrofanov, V P, Saulson, P, Mittleman, R, Ottaway, D J, Owen, Benjamin, Pedraza, M, Penn, S, Reed, C M, Riles, K, Wallace, L, Schwinberg, P, Sammut, L, Shoemaker, D, Shapiro, Brett, Siemens, X, Sigg, D, Sintes, A, Strigin, S, Summerscales, T.Z., Susmithan, S, Whitcomb, Stanley Ernest, Wang, Xiaofeng, Whiting, B F, Zhang, L, Wade, Andrew, Abadie, J, Abbott, B, Shaddock, Daniel, Abbott, Robert, Aasi, J, Basti, A, Beker, M G, Blom, M, Bulten, H.J., Evans, M, Factourovich, M, Genin, E, Kawabe, Keita, Adams, C, Landry, M, Mandic, V., Meadors, G.D., Sathyaprakash, B, Schofield, R, Talukder, D, Torrie, Calum, Van Den Brand, J., Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Veitch, Peter John, Vass, S, Vinet, J-Y, Anderson, S B, Vorvick, C, Adhikari, Rana, Araya, M, Barsotti, L, Bartos, I, Beyersdorf, P T, Bilenko, I A, Finn, Lee, Billingsley, G, Blackburn, James Kent, Bose, S, Bork, R, Byer, Robert L, Slagmolen, Bram, Braginsky, V, Brau, J E, Charlton, Philip, Corbitt, T, Frey, R, Coward, D, Coyne, D, Creighton, J D E, DeBra, D, Dhurandhar, S, Dumas, J-C, Dwyer, Sheila, Ehrens, P, Etzel, T, Fairhurst, S, Fritschel, Peter, Frolov, V, Fyffe, M, Gray, C, Giaime, J, Stefszky, Michael, Greenhalgh, R. J. S., Hammer, D, Mageswaran, M, Gustafson, R, Hanson, J, Heefner, J, Heptonstall, A, Hewitson, M, Howell, E, Ivanov, A, Kalogera, V, Katsavounidis, E, Kells, W, Lubinski, M, Khazanov, E, King, P, Kissel, Jeffrey S, Kozak, D, Lantz, B, Lazzarini, A, Leonor, I, Lindquist, P, Lormand, M, Lockerbie, N.A., MacInnis, M, Mailand, K, Maros, E, Marx, Jay, Mavalvala, Nergis, Melatos, Andrew, Melissinos, A, Mendell, G, Waldman, Sam J, Meshkov, S, Mitrofanov, V P, Saulson, P, Mittleman, R, Ottaway, D J, Owen, Benjamin, Pedraza, M, Penn, S, Reed, C M, Riles, K, Wallace, L, Schwinberg, P, Sammut, L, Shoemaker, D, Shapiro, Brett, Siemens, X, Sigg, D, Sintes, A, Strigin, S, Summerscales, T.Z., Susmithan, S, Whitcomb, Stanley Ernest, Wang, Xiaofeng, Whiting, B F, Zhang, L, Wade, Andrew, Abadie, J, Abbott, B, Shaddock, Daniel, Abbott, Robert, Aasi, J, Basti, A, Beker, M G, Blom, M, Bulten, H.J., Evans, M, Factourovich, M, Genin, E, Kawabe, Keita, Adams, C, Landry, M, Mandic, V., Meadors, G.D., Sathyaprakash, B, Schofield, R, Talukder, D, Torrie, Calum, and Van Den Brand, J.

Abstract

This paper presents results of an all-sky search for periodic gravitational waves in the frequency range [50,1 190] Hz and with frequency derivative range of ∼[-20,1.1]×10-10 Hz s-1 for the fifth LIGO science run (S5). The search uses a noncoherent Hou

Published
2013

36. Directed search for continuous gravitational waves from the Galactic center

Author

Chow, Jong, Chua, Sheon, Inta, Ra, McClelland, David, Miller, John, Mow-Lowry, C, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stochino, Alberto, Wade, Andrew, Ward, Robert, Woan, G, Torrie, Calum, Unnikrishnan, C S, Veitch, Peter John, Vyachanin, S, Kalogera, V, Waldman, Sam J, Whitcomb, Stanley Ernest, Allen, B, Creighton, J D E, Abbott, T, Acernese, F, Bartos, I, Basti, A, Beker, M G, Bertolini, A, Beyersdorf, P T, Bilenko, I A, Blom, M, Bose, S, Braginsky, V, Brau, J E, Bulten, H.J., Byer, Robert L, Charlton, Philip, Coward, D, Dhurandhar, S, Dumas, J-C, Factourovich, M, Fairhurst, S, Finn, Lee, Frei, Z, Gehrels, N, Genin, E, Giaime, J, Greenhalgh, R. J. S., Gustafson, R, Hammer, D, Hosken, Dave, Howell, E, Kawabe, Keita, Landry, M, Mandic, V., Meadors, G.D., Melatos, Andrew, Mendell, G, Mitrofanov, V P, Ottaway, D J, Owen, Benjamin, Penn, S, Rajalakshmi, G, Reed, C M, Reitze, D, Riles, K, Sammut, L, Sathyaprakash, B, Saulson, P, Schofield, R, Schwinberg, P, Sengupta, Anand S, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Strigin, S, Summerscales, T.Z., Susmithan, S, Van Den Brand, J., Vinet, J-Y, Vorvick, C, Waldman, S, Wen, L, Whiting, B F, Chow, Jong, Chua, Sheon, Inta, Ra, McClelland, David, Miller, John, Mow-Lowry, C, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stochino, Alberto, Wade, Andrew, Ward, Robert, Woan, G, Torrie, Calum, Unnikrishnan, C S, Veitch, Peter John, Vyachanin, S, Kalogera, V, Waldman, Sam J, Whitcomb, Stanley Ernest, Allen, B, Creighton, J D E, Abbott, T, Acernese, F, Bartos, I, Basti, A, Beker, M G, Bertolini, A, Beyersdorf, P T, Bilenko, I A, Blom, M, Bose, S, Braginsky, V, Brau, J E, Bulten, H.J., Byer, Robert L, Charlton, Philip, Coward, D, Dhurandhar, S, Dumas, J-C, Factourovich, M, Fairhurst, S, Finn, Lee, Frei, Z, Gehrels, N, Genin, E, Giaime, J, Greenhalgh, R. J. S., Gustafson, R, Hammer, D, Hosken, Dave, Howell, E, Kawabe, Keita, Landry, M, Mandic, V., Meadors, G.D., Melatos, Andrew, Mendell, G, Mitrofanov, V P, Ottaway, D J, Owen, Benjamin, Penn, S, Rajalakshmi, G, Reed, C M, Reitze, D, Riles, K, Sammut, L, Sathyaprakash, B, Saulson, P, Schofield, R, Schwinberg, P, Sengupta, Anand S, Sigg, D, Sintes, A, Souradeep, T, Staley, A, Strigin, S, Summerscales, T.Z., Susmithan, S, Van Den Brand, J., Vinet, J-Y, Vorvick, C, Waldman, S, Wen, L, and Whiting, B F

Abstract

We present the results of a directed search for continuous gravitational waves from unknown, isolated neutron stars in the Galactic center region, performed on two years of data from LIGO's fifth science run from two LIGO detectors. The search uses a semi

Published
2013

37. Search for gravitational waves from low mass compact binary coalescence in LIGO's sixth science run and Virgo's science runs 2 and 3

Author

Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Abbott, Robert, Anderson, S B, Araya, M, Blackburn, James Kent, Etzel, T, Ivanov, A, Kozak, D, Meshkov, S, Heefner, J, Hosken, Dave, Howell, E, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Abbott, Robert, Anderson, S B, Araya, M, Blackburn, James Kent, Etzel, T, Ivanov, A, Kozak, D, Meshkov, S, Heefner, J, Hosken, Dave, and Howell, E

Abstract

We report on a search for gravitational waves from coalescing compact binaries using LIGO and Virgo observations between July 7, 2009, and October 20, 2010. We searched for signals from binaries with total mass between 2 and 25M this includes binary neutron stars, binary black holes, and binaries consisting of a black hole and neutron star. The detectors were sensitive to systems up to 40 Mpc distant for binary neutron stars, and further for higher mass systems. No gravitational-wave signals were detected. We report upper limits on the rate of compact binary coalescence as a function of total mass, including the results from previous LIGO and Virgo observations. The cumulative 90% confidence rate upper limits of the binary coalescence of binary neutron star, neutron star-black hole, and binary black hole systems are 1.3×10 -4, 3.1×10 -5, and 6.4×10 -6Mpc -3yr -1, respectively. These upper limits are up to a factor 1.4 lower than previously derived limits. We also report on results from a blind injection challenge.

Published
2012

38. All-sky search for periodic gravitational waves in the full S5 LIGO data

Author

Abadie, J., Abbott, B., Abbott, Robert, Abbott, T. D., Abernathy, M., Accadia, T., Acernese, F., Adams, C., Adhikari, A., Anderson, S. B., Araya, M., Blackburn, James Kent, Etzel, T., Ivanov, A., Kozak, D., Meshkov, S., Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C., Mullavey, Adam, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Heefner, J., Hosken, Dave, Howell, E., Abadie, J., Abbott, B., Abbott, Robert, Abbott, T. D., Abernathy, M., Accadia, T., Acernese, F., Adams, C., Adhikari, A., Anderson, S. B., Araya, M., Blackburn, James Kent, Etzel, T., Ivanov, A., Kozak, D., Meshkov, S., Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C., Mullavey, Adam, Scott, Susan M., Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Heefner, J., Hosken, Dave, and Howell, E.

Abstract

We report on an all-sky search for periodic gravitational waves in the frequency band 50-800Hz and with the frequency time derivative in the range of 0 through -6×10 -9Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetri

Published
2012

39. All-sky search for gravitational-wave bursts in the second joint LIGO-Virgo run

Author

Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Abbott, Robert, Adhikari, Rana, Black, E, Etzel, T, Heefner, J, Kozak, D, Vass, S, Whitcomb, Stanley Ernest, Hosken, Dave, Howell, E, Ivanov, A, Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Abbott, Robert, Adhikari, Rana, Black, E, Etzel, T, Heefner, J, Kozak, D, Vass, S, Whitcomb, Stanley Ernest, Hosken, Dave, Howell, E, and Ivanov, A

Abstract

We present results from a search for gravitational-wave bursts in the data collected by the LIGO and Virgo detectors between July 7, 2009 and October 20, 2010: data are analyzed when at least two of the three LIGO-Virgo detectors are in coincident operation, with a total observation time of 207 days. The analysis searches for transients of duration -1s over the frequency band 64-5000 Hz, without other assumptions on the signal waveform, polarization, direction or occurrence time. All identified events are consistent with the expected accidental background. We set frequentist upper limits on the rate of gravitational-wave bursts by combining this search with the previous LIGO-Virgo search on the data collected between November 2005 and October 2007. The upper limit on the rate of strong gravitational-wave bursts at the Earth is 1.3 events per year at 90% confidence. We also present upper limits on source rate density per year and Mpc3 for sample populations of standard-candle sources. As in the previous joint run, typical sensitivities of the search in terms of the root-sum-squared strain amplitude for these waveforms lie in the range ∼5×10 -22Hz -1 /2 to ∼1×10 -20Hz -1 /2. The combination of the two joint runs entails the most sensitive all-sky search for generic gravitational-wave bursts and synthesizes the results achieved by the initial generation of interferometric detectors.

Published
2012

40. Search for gravitational waves from intermediate mass binary black holes

Author

Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Abbott, Robert, Anderson, S B, Araya, M, Blackburn, James Kent, Etzel, T, Ivanov, A, Kozak, D, Meshkov, S, Heefner, J, Hosken, Dave, Howell, E, Chow, Jong, Chua, Sheon, Inta, Ra, Lam, Ping Koy, McClelland, David, Miller, John, Mow-Lowry, C, Mullavey, Adam, Nguyen, Thanh, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Stefszky, Michael, Wade, Andrew, Abadie, J, Abbott, B, Abbott, Robert, Anderson, S B, Araya, M, Blackburn, James Kent, Etzel, T, Ivanov, A, Kozak, D, Meshkov, S, Heefner, J, Hosken, Dave, and Howell, E

Abstract

We present the results of a weakly modeled burst search for gravitational waves from mergers of nonspinning intermediate mass black holes in the total mass range 100-450M and with the component mass ratios between 11 and 41. The search was conducted on data collected by the LIGO and Virgo detectors between November of 2005 and October of 2007. No plausible signals were observed by the search which constrains the astrophysical rates of the intermediate mass black holes mergers as a function of the component masses. In the most efficiently detected bin centered on 88+88M, for nonspinning sources, the rate density upper limit is 0.13 per Mpc3 per Myr at the 90% confidence level.

Published
2012

41. Directional Limits on Persistent Gravitational Waves Using LIGO S5 Science Data

Author

Chua, Sheon, Inta, Ra, McClelland, David, Mow-Lowry, C, Mullavey, Adam, Satterthwaite, Matthew, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wette, Karl, Abadie, J, Abbott, B, Abbott, Robert, Adhikari, Rana, Billingsley, G, Black, E, Blackburn, James Kent, Bork, R, DeSalvo, R, Ehrens, P, LIGO , Scientific Collaboration (700 Scientists), Heefner, J, Hosken, Dave, Hough, J, Howell, E, Ivanov, A, Chua, Sheon, Inta, Ra, McClelland, David, Mow-Lowry, C, Mullavey, Adam, Satterthwaite, Matthew, Scott, Susan M, Shaddock, Daniel, Slagmolen, Bram, Wette, Karl, Abadie, J, Abbott, B, Abbott, Robert, Adhikari, Rana, Billingsley, G, Black, E, Blackburn, James Kent, Bork, R, DeSalvo, R, Ehrens, P, LIGO , Scientific Collaboration (700 Scientists), Heefner, J, Hosken, Dave, Hough, J, Howell, E, and Ivanov, A

Abstract

The gravitational-wave (GW) sky may include nearby pointlike sources as well as stochastic backgrounds. We perform two directional searches for persistent GWs using data from the LIGO S5 science run: one optimized for pointlike sources and one for arbitrary extended sources. Finding no evidence to support the detection of GWs, we present 90% confidence level (C.L.) upper-limit maps of GW strain power with typical values between 2-20×10 -50strain2Hz -1 and 5-35×10 -49strain2Hz -1sr -1 for pointlike and extended sources, respectively. The latter result is the first of its kind. We also set 90% C.L. limits on the narrow-band root-mean-square GW strain from interesting targets including Sco X-1, SN 1987A and the Galactic center as low as 7×10 -25 in the most sensitive frequency range near 160 Hz.

Published
2011

42. Search for gravitational waves from binary black hole inspiral, merger, and ringdown

Author

Abadie, J, Abbott, B, Abbott, Robert, Abernathy, M, Acernese, F, Adams, C, Adhikari, Rana, Allen, B, Allen, G, Amin, R, Charlton, Philip, Barone, F, Savage, R, Schofield, R, Vorvick, C, Sigg, D, LIGO , Scientific Collaboration (700 Scientists), Sintes, A, Strain, Ken A, Inta, Ra, Strigin, S, Christensen, N, Grunewald, S, Brau, J E, Summerscales, T.Z., Ward, R L, Susmithan, S, Talukder, D, Bartos, I, Tanner, D B, Gustafson, E, Beyersdorf, P T, Chung, C. T.Y., Torrie, Calum, Bose, S, Trias, M., Bilenko, I A, Wen, L, Vyachanin, S, Waldman, Sam J, Whitcomb, Stanley Ernest, Whiting, B F, Braginsky, V, McClelland, David, Willems, P, Woan, G, Anderson, S B, Yamamoto, H, Barriga, P, Heptonstall, A, Zhang, L, Beker, M G, Zhao, Chunnong, DeSalvo, R, Conte, R., Hewitson, M, Dooley, Katherine L, Dumas, J-C, Kells, W, Finn, Lee, Fotopoulos, N, King, P, Mullavey, Adam, Araya, M, Gossler, S, Lindquist, P, Rabeling, David, Scott, Susan M, Doomes, E.E., Barsotti, L, Billingsley, G, Black, E, Satterthwaite, Matthew, Heefner, J, Blackburn, James Kent, Blair, David Gerald, Coward, D, Blom, M, Byer, Robert L, Wette, Karl, Fricke, Tobin T, Bork, R, Cao, J, Jones, D I, Hough, J, Coyne, D, Ehrens, P, Mitrofanov, V P, Arain, M, Cunningham, L, Hosken, Dave, Danilishin, S L, Ely, G, Lockerbie, N.A., Melatos, Andrew, Etzel, T, Fairhurst, S, Fritschel, Peter, Mueller, Guido, Fan, Y, Ju, Li, Shaddock, Daniel, Frolov, V, Melissinos, A, Genin, E, Giaime, J, MacInnis, M, Chua, Sheon, Goetz, E, Munch, Jesper, Gras, S, Riles, K, Kawabe, Keita, Greenhalgh, R. J. S., Gustafson, R, Mageswaran, M, Hammer, D, Mendell, G, Harry, Gregory M, Howell, E, Mow-Lowry, C, Schwinberg, P, Sammut, L, Huet, D, Meshkov, S, Huttner, S.H., Ivanov, A, Klimenko, S, Kawamura, S, Sengupta, Anand S, Khazanov, E, Ottaway, D J, Kozak, D, Mailand, K, Bastarrika, M, Sancho De La Jordana, L, Landry, M, Lazzarini, A, Vass, S, Maros, E, Marx, Jay, Sathyaprakash, B, Owen, Benjamin, Slagmolen, Bram, Mavalvala, Nergis, Meadors, G.D., Anderson, WG, Miao, H, Veitch, Peter John, Bulten, H.J., Mandic, V., Van Den Brand, J., Shapiro, Brett, Pedraza, M, Wallace, L, Penn, S, Aston, S, Pitkin, M, Plissi, M, Saulson, P, Vinet, J-Y, Reed, C M, Reitze, D, Mittleman, R, Grote, H, Shoemaker, D, Weinstein, A, Abadie, J, Abbott, B, Abbott, Robert, Abernathy, M, Acernese, F, Adams, C, Adhikari, Rana, Allen, B, Allen, G, Amin, R, Charlton, Philip, Barone, F, Savage, R, Schofield, R, Vorvick, C, Sigg, D, LIGO , Scientific Collaboration (700 Scientists), Sintes, A, Strain, Ken A, Inta, Ra, Strigin, S, Christensen, N, Grunewald, S, Brau, J E, Summerscales, T.Z., Ward, R L, Susmithan, S, Talukder, D, Bartos, I, Tanner, D B, Gustafson, E, Beyersdorf, P T, Chung, C. T.Y., Torrie, Calum, Bose, S, Trias, M., Bilenko, I A, Wen, L, Vyachanin, S, Waldman, Sam J, Whitcomb, Stanley Ernest, Whiting, B F, Braginsky, V, McClelland, David, Willems, P, Woan, G, Anderson, S B, Yamamoto, H, Barriga, P, Heptonstall, A, Zhang, L, Beker, M G, Zhao, Chunnong, DeSalvo, R, Conte, R., Hewitson, M, Dooley, Katherine L, Dumas, J-C, Kells, W, Finn, Lee, Fotopoulos, N, King, P, Mullavey, Adam, Araya, M, Gossler, S, Lindquist, P, Rabeling, David, Scott, Susan M, Doomes, E.E., Barsotti, L, Billingsley, G, Black, E, Satterthwaite, Matthew, Heefner, J, Blackburn, James Kent, Blair, David Gerald, Coward, D, Blom, M, Byer, Robert L, Wette, Karl, Fricke, Tobin T, Bork, R, Cao, J, Jones, D I, Hough, J, Coyne, D, Ehrens, P, Mitrofanov, V P, Arain, M, Cunningham, L, Hosken, Dave, Danilishin, S L, Ely, G, Lockerbie, N.A., Melatos, Andrew, Etzel, T, Fairhurst, S, Fritschel, Peter, Mueller, Guido, Fan, Y, Ju, Li, Shaddock, Daniel, Frolov, V, Melissinos, A, Genin, E, Giaime, J, MacInnis, M, Chua, Sheon, Goetz, E, Munch, Jesper, Gras, S, Riles, K, Kawabe, Keita, Greenhalgh, R. J. S., Gustafson, R, Mageswaran, M, Hammer, D, Mendell, G, Harry, Gregory M, Howell, E, Mow-Lowry, C, Schwinberg, P, Sammut, L, Huet, D, Meshkov, S, Huttner, S.H., Ivanov, A, Klimenko, S, Kawamura, S, Sengupta, Anand S, Khazanov, E, Ottaway, D J, Kozak, D, Mailand, K, Bastarrika, M, Sancho De La Jordana, L, Landry, M, Lazzarini, A, Vass, S, Maros, E, Marx, Jay, Sathyaprakash, B, Owen, Benjamin, Slagmolen, Bram, Mavalvala, Nergis, Meadors, G.D., Anderson, WG, Miao, H, Veitch, Peter John, Bulten, H.J., Mandic, V., Van Den Brand, J., Shapiro, Brett, Pedraza, M, Wallace, L, Penn, S, Aston, S, Pitkin, M, Plissi, M, Saulson, P, Vinet, J-Y, Reed, C M, Reitze, D, Mittleman, R, Grote, H, Shoemaker, D, and Weinstein, A

Abstract

We present the first modeled search for gravitational waves using the complete binary black-hole gravitational waveform from inspiral through the merger and ringdown for binaries with negligible component spin. We searched approximately 2 years of LIGO data, taken between November 2005 and September 2007, for systems with component masses of 1-99Mȯ and total masses of 25-100Mȯ. We did not detect any plausible gravitational-wave signals but we do place upper limits on the merger rate of binary black holes as a function of the component masses in this range. We constrain the rate of mergers for 19Mȯ≤m1, m 2≤28Mȯ binary black-hole systems with negligible spin to be no more than 2.0Mpc-3Myr-1 at 90% confidence.

Published
2011

43. Search for gravitational waves associated with the August 2006 timing glitch of the Vela pulsar

Author

Chua, Sheon, Lam, Ping Koy, McClelland, David, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, Trias, M., Sintes, A, Strain, Ken A, Strigin, S, Summerscales, T.Z., Susmithan, S, Talukder, D, Tanner, D B, Tarabrin, S., Veitch, Peter John, Vyachanin, S, Waldman, S, Ward, R L, Wen, L, Whiting, B F, Woan, G, Zhao, Chunnong, Abadie, J, Abbott, B, Abbott, Robert, Billingsley, G, Black, E, Cardenas, L, Ehrens, P, Heptonstall, A, Pedraza, M, Weinstein, A, LIGO , Scientific Collaboration (700 Scientists), Allen, B, Allen, G, Amin, R, Anderson, WG, Arain, M, Aston, S, Barriga, P, Bartos, I, Bastarrika, M, Beyersdorf, P T, Bilenko, I A, Blair, David Gerald, Bose, S, Braginsky, V, Brau, J E, Byer, Robert L, Charlton, Philip, Christensen, N, Chung, C. T.Y., Conte, R., Coward, D, Cunningham, L, Danilishin, S L, Dergachev, V, Dhurandhar, S, Dooley, Katherine L, Dumas, J-C, Fairhurst, S, Fan, Y, Finn, Lee, Fotopoulos, N, Frei, Z, Fricke, Tobin T, Giaime, J, Goetz, E, Gras, S, Greenhalgh, R. J. S., Gustafson, R, Hammer, D, Hewitson, M, Hosken, Dave, Hough, J, Howell, E, Huttner, S.H., Jones, D I, Ju, Li, Kawamura, S, Khazanov, E, Leindecker, N, Lockerbie, N.A., Mandic, V., Melatos, Andrew, Melissinos, A, Merrill, Lucienne, Miao, H, Mitrofanov, V P, Mueller, Guido, Munch, Jesper, Ottaway, D J, Owen, Benjamin, Penn, S, Pitkin, M, Plissi, M, Reitze, D, Riles, K, Sammut, L, Sancho De La Jordana, L, Sathyaprakash, B, Saulson, P, Schofield, R, Chua, Sheon, Lam, Ping Koy, McClelland, David, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, Trias, M., Sintes, A, Strain, Ken A, Strigin, S, Summerscales, T.Z., Susmithan, S, Talukder, D, Tanner, D B, Tarabrin, S., Veitch, Peter John, Vyachanin, S, Waldman, S, Ward, R L, Wen, L, Whiting, B F, Woan, G, Zhao, Chunnong, Abadie, J, Abbott, B, Abbott, Robert, Billingsley, G, Black, E, Cardenas, L, Ehrens, P, Heptonstall, A, Pedraza, M, Weinstein, A, LIGO , Scientific Collaboration (700 Scientists), Allen, B, Allen, G, Amin, R, Anderson, WG, Arain, M, Aston, S, Barriga, P, Bartos, I, Bastarrika, M, Beyersdorf, P T, Bilenko, I A, Blair, David Gerald, Bose, S, Braginsky, V, Brau, J E, Byer, Robert L, Charlton, Philip, Christensen, N, Chung, C. T.Y., Conte, R., Coward, D, Cunningham, L, Danilishin, S L, Dergachev, V, Dhurandhar, S, Dooley, Katherine L, Dumas, J-C, Fairhurst, S, Fan, Y, Finn, Lee, Fotopoulos, N, Frei, Z, Fricke, Tobin T, Giaime, J, Goetz, E, Gras, S, Greenhalgh, R. J. S., Gustafson, R, Hammer, D, Hewitson, M, Hosken, Dave, Hough, J, Howell, E, Huttner, S.H., Jones, D I, Ju, Li, Kawamura, S, Khazanov, E, Leindecker, N, Lockerbie, N.A., Mandic, V., Melatos, Andrew, Melissinos, A, Merrill, Lucienne, Miao, H, Mitrofanov, V P, Mueller, Guido, Munch, Jesper, Ottaway, D J, Owen, Benjamin, Penn, S, Pitkin, M, Plissi, M, Reitze, D, Riles, K, Sammut, L, Sancho De La Jordana, L, Sathyaprakash, B, Saulson, P, and Schofield, R

Abstract

The physical mechanisms responsible for pulsar timing glitches are thought to excite quasinormal mode oscillations in their parent neutron star that couple to gravitational-wave emission. In August 2006, a timing glitch was observed in the radio emission

Published
2011

44. All-sky search for gravitational-wave bursts in the first joint LIGO-GEO-Virgo run

Author

Chua, Sheon, Lam, Ping Koy, McClelland, David, Mow-Lowry, C, Mullavey, Adam, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Abbott, B, Allen, G, Betzwieser, J, Blackburn, James Kent, Bland-Weaver, B, Bork, R, Chatterji, Shourov, Coyne, D, Creighton, J D E, Rabeling, David, VIRGO, Scientific Collaboration (numerous Scientists), Hough, J, Chua, Sheon, Lam, Ping Koy, McClelland, David, Mow-Lowry, C, Mullavey, Adam, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Abbott, B, Allen, G, Betzwieser, J, Blackburn, James Kent, Bland-Weaver, B, Bork, R, Chatterji, Shourov, Coyne, D, Creighton, J D E, Rabeling, David, VIRGO, Scientific Collaboration (numerous Scientists), and Hough, J

Abstract

We present results from an all-sky search for unmodeled gravitational-wave bursts in the data collected by the LIGO, GEO 600 and Virgo detectors between November 2006 and October 2007. The search is performed by three different analysis algorithms over the frequency band 50-6000 Hz. Data are analyzed for times with at least two of the four LIGO-Virgo detectors in coincident operation, with a total live time of 266 days. No events produced by the search algorithms survive the selection cuts. We set a frequentist upper limit on the rate of gravitational-wave bursts impinging on our network of detectors. When combined with the previous LIGO search of the data collected between November 2005 and November 2006, the upper limit on the rate of detectable gravitational-wave bursts in the 64-2048 Hz band is 2.0 events per year at 90% confidence. We also present event rate versus strength exclusion plots for several types of plausible burst waveforms. The sensitivity of the combined search is expressed in terms of the root-sum-squared strain amplitude for a variety of simulated waveforms and lies in the range 6×10 -22Hz-1/2 to 2×10-20Hz -1/2. This is the first untriggered burst search to use data from the LIGO and Virgo detectors together, and the most sensitive untriggered burst search performed so far.

Published
2010

45. Search for gravitational-wave bursts in the first year of the fifth LIGO science run

Author

McClelland, David, Gray, Malcolm, Lam, Ping Koy, McKenzie, Kirk, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Danzmann, Karsten, Christensen, N, Chung, C. T.Y., Colacino, C. N, Dhurandhar, S, Khazanov, E, Conte, R., Castaldi, G, Lockerbie, N.A., Heefner, J, Hosken, Dave, Hough, J, Ivanov, A, McClelland, David, Gray, Malcolm, Lam, Ping Koy, McKenzie, Kirk, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Danzmann, Karsten, Christensen, N, Chung, C. T.Y., Colacino, C. N, Dhurandhar, S, Khazanov, E, Conte, R., Castaldi, G, Lockerbie, N.A., Heefner, J, Hosken, Dave, Hough, J, and Ivanov, A

Abstract

We present the results obtained from an all-sky search for gravitational-wave (GW) bursts in the 64-2000 Hz frequency range in data collected by the LIGO detectors during the first year (November 2005-November 2006) of their fifth science run. The total analyzed live time was 268.6 days. Multiple hierarchical data analysis methods were invoked in this search. The overall sensitivity expressed in terms of the root-sum-square (rss) strain amplitude hrss for gravitational-wave bursts with various morphologies was in the range of 6×10-22Hz-1/2 to a few×10-21Hz-1/2. No GW signals were observed and a frequentist upper limit of 3.75 events per year on the rate of strong GW bursts was placed at the 90% confidence level. As in our previous searches, we also combined this rate limit with the detection efficiency for selected waveform morphologies to obtain event rate versus strength exclusion curves. In sensitivity, these exclusion curves are the most stringent to date.

Published
2009

46. Search for gravitational waves from low mass binary coalescences in the first year of LIGO's S5 data

Author

McClelland, David, Gray, Malcolm, Lam, Ping Koy, McKenzie, Kirk, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Allen, G, Kawamura, S, Khazanov, E, Chung, C. T.Y., Sancho De La Jordana, L, Mageswaran, M, Mukhopadhyay, H, Mittleman, R, Castaldi, G, Fricke, T, Heefner, J, Hosken, Dave, Hough, J, Ivanov, A, McClelland, David, Gray, Malcolm, Lam, Ping Koy, McKenzie, Kirk, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Allen, G, Kawamura, S, Khazanov, E, Chung, C. T.Y., Sancho De La Jordana, L, Mageswaran, M, Mukhopadhyay, H, Mittleman, R, Castaldi, G, Fricke, T, Heefner, J, Hosken, Dave, Hough, J, and Ivanov, A

Abstract

We have searched for gravitational waves from coalescing low mass compact binary systems with a total mass between 2M and 35 and a minimum component mass of 1M using data from the first year of the fifth science run of the three LIGO detectors, operating

Published
2009

47. All-Sky LIGO Search for Periodic Gravitational Waves in the Early Fifth-Science-Run Data

Author

Dickson, James, Gray, Malcolm, McClelland, David, McKenzie, Kirk, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Abbott, B, Abbott, Robert, Adhikari, Rana, Ajith, P, Allen, B, Amin, R, Anderson, S B, Anderson, WG, Aufmuth, P, Barriga, P, Heefner, J, Hosken, Dave, Hough, J, Ivanov, A, Dickson, James, Gray, Malcolm, McClelland, David, McKenzie, Kirk, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Abbott, B, Abbott, Robert, Adhikari, Rana, Ajith, P, Allen, B, Amin, R, Anderson, S B, Anderson, WG, Aufmuth, P, Barriga, P, Heefner, J, Hosken, Dave, Hough, J, and Ivanov, A

Abstract

We report on an all-sky search with the LIGO detectors for periodic gravitational waves in the frequency range 50-1100Hz and with the frequency's time derivative in the range -5×10-9-0Hzs-1. Data from the first eight months of the fifth LIGO science run

Published
2009

48. First LIGO search for Gravitational wave bursts from cosmic (super)strings

Author

McClelland, David, Gray, Malcolm, Lam, Ping Koy, McKenzie, Kirk, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Sancho De La Jordana, L, Kawamura, S, Abbott, B, Fairhurst, S, Charlton, Philip, Bartos, I, Colacino, C. N, Penn, S, Khazanov, E, Heefner, J, Hosken, Dave, Hough, J, Ivanov, A, McClelland, David, Gray, Malcolm, Lam, Ping Koy, McKenzie, Kirk, Mow-Lowry, C, Mullavey, Adam, Rabeling, David, Satterthwaite, Matthew, Scott, Susan M, Slagmolen, Bram, Wette, Karl, LIGO , Scientific Collaboration (700 Scientists), Sancho De La Jordana, L, Kawamura, S, Abbott, B, Fairhurst, S, Charlton, Philip, Bartos, I, Colacino, C. N, Penn, S, Khazanov, E, Heefner, J, Hosken, Dave, Hough, J, and Ivanov, A

Abstract

We report on a matched-filter search for gravitational wave bursts from cosmic string cusps using LIGO data from the fourth science run (S4) which took place in February and March 2005. No gravitational waves were detected in 14.9 days of data from times

Published
2009

49. Search for Gravitational-Wave Bursts from Soft Gamma Repeaters

Author

Abbott, B, Abbott, Robert, Adhikari, Rana, Ajith, P, Allen, B, Allen, G, Amin, R, Anderson, S B, Anderson, W G, Anderson, WG, Dickson, James, Gray, Malcolm, Lam, Ping Koy, McClelland, David, McKenzie, Kirk, Mow-Lowry, C, Rabeling, David, Scott, Susan M, Searle, Antony, Slagmolen, Bram, Wette, Karl, Heefner, J, Hosken, Dave, Hough, J, Hurley, K C, Ivanov, A, Abbott, B, Abbott, Robert, Adhikari, Rana, Ajith, P, Allen, B, Allen, G, Amin, R, Anderson, S B, Anderson, W G, Anderson, WG, Dickson, James, Gray, Malcolm, Lam, Ping Koy, McClelland, David, McKenzie, Kirk, Mow-Lowry, C, Rabeling, David, Scott, Susan M, Searle, Antony, Slagmolen, Bram, Wette, Karl, Heefner, J, Hosken, Dave, Hough, J, Hurley, K C, and Ivanov, A

Abstract

We present a LIGO search for short-duration gravitational waves (GWs) associated with soft gamma ray repeater (SGR) bursts. This is the first search sensitive to neutron star f modes, usually considered the most efficient GW emitting modes. We find no evidence of GWs associated with any SGR burst in a sample consisting of the 27 Dec. 2004 giant flare from SGR 1806-20 and 190 lesser events from SGR 1806-20 and SGR 1900+14. The unprecedented sensitivity of the detectors allows us to set the most stringent limits on transient GW amplitudes published to date. We find upper limit estimates on the model-dependent isotropic GW emission energies (at a nominal distance of 10 kpc) between 3×1045 and 9×1052 erg depending on waveform type, detector antenna factors and noise characteristics at the time of the burst. These upper limits are within the theoretically predicted range of some SGR models.

Published
2008

50. Search for gravitational waves from binary inspirals in S3 and S4 in LIGO data

Author

Abbott, B, Abbott, Robert, Adhikari, Rana, Agresti, A, Ajith, P, Allen, B, Amin, R, Anderson, S B, Anderson, WG, Arain, M, Ashley, Michael, Chow, Jong, Dickson, James, Gossler, Stefan, Gray, Malcolm, Lam, Ping Koy, McClelland, David, McKenzie, Kirk, Mow-Lowry, C, Moylan, Andrew, Rabeling, David, Scott, Susan M, Searle, Antony, Slagmolen, Bram, Wette, Karl, Heefner, J, Hosken, Dave, Hough, J, Howell, E, Ivanov, A, Abbott, B, Abbott, Robert, Adhikari, Rana, Agresti, A, Ajith, P, Allen, B, Amin, R, Anderson, S B, Anderson, WG, Arain, M, Ashley, Michael, Chow, Jong, Dickson, James, Gossler, Stefan, Gray, Malcolm, Lam, Ping Koy, McClelland, David, McKenzie, Kirk, Mow-Lowry, C, Moylan, Andrew, Rabeling, David, Scott, Susan M, Searle, Antony, Slagmolen, Bram, Wette, Karl, Heefner, J, Hosken, Dave, Hough, J, Howell, E, and Ivanov, A

Abstract

We report on a search for gravitational waves from the coalescence of compact binaries during the third and fourth LIGO science runs. The search focused on gravitational waves generated during the inspiral phase of the binary evolution. In our analysis, we considered three categories of compact binary systems, ordered by mass: (i) primordial black hole binaries with masses in the range 0.35M

Published
2008

Catalog

Books, media, physical & digital resources
See catalog results