Zobrazeno 1 - 10
of 405
pro vyhledávání: '"Zaldarriaga, Matías"'
To study the early Universe, it is essential to estimate cosmological parameters with high accuracy, which depends on the optimal reconstruction of Cosmic Microwave Background (CMB) maps and the measurement of their power spectrum. In this paper, we
Externí odkaz:
http://arxiv.org/abs/2412.10580
The recent detection of gravitational waves (GWs) by pulsar timing array (PTA) collaborations spurred a variety of questions regarding the origin of the signal and the properties of its sources. The amplitude of a GW background produced by inspiralli
Externí odkaz:
http://arxiv.org/abs/2406.17010
Autor:
Wadekar, Digvijay, Venumadhav, Tejaswi, Roulet, Javier, Mehta, Ajit Kumar, Zackay, Barak, Mushkin, Jonathan, Zaldarriaga, Matias
Publikováno v:
Phys. Rev. D 110, 044063 (2024)
Nearly all template-based gravitational wave (GW) searches only include the quasi-circular quadrupolar modes of the signals in their templates. Including additional degrees of freedom in the GW templates corresponding to higher-order harmonics, orbit
Externí odkaz:
http://arxiv.org/abs/2405.17400
Autor:
Cabass, Giovanni, Philcox, Oliver H. E., Ivanov, Mikhail M., Akitsu, Kazuyuki, Chen, Shi-Fan, Simonović, Marko, Zaldarriaga, Matias
Massive particles leave imprints on primordial non-Gaussianity via couplings to the inflaton, even despite their exponential dilution during inflation: practically, the Universe acts as a Cosmological Collider. We present the first dedicated search f
Externí odkaz:
http://arxiv.org/abs/2404.01894
Autor:
Roulet, Javier, Mushkin, Jonathan, Wadekar, Digvijay, Venumadhav, Tejaswi, Zackay, Barak, Zaldarriaga, Matias
Publikováno v:
Phys. Rev. D 110, 044010 (2024)
We introduce an algorithm to marginalize the likelihood for a gravitational wave signal from a quasi-circular binary merger over its extrinsic parameters, accounting for the effects of higher harmonics and spin-induced precession. The algorithm takes
Externí odkaz:
http://arxiv.org/abs/2404.02435
The accurate reconstruction of Cosmic Microwave Background (CMB) maps and the measurement of its power spectrum are crucial for studying the early universe. In this paper, we implement a convolutional neural network to apply the Wiener Filter to CMB
Externí odkaz:
http://arxiv.org/abs/2312.09943
Multiple pulsar timing array (PTA) collaborations have recently reported the first detection of gravitational waves (GWs) of nanohertz frequencies. The signal is expected to be primarily sourced by inspiralling supermassive black hole binaries (SMBHB
Externí odkaz:
http://arxiv.org/abs/2312.06756
Autor:
Wadekar, Digvijay, Roulet, Javier, Venumadhav, Tejaswi, Mehta, Ajit Kumar, Zackay, Barak, Mushkin, Jonathan, Olsen, Seth, Zaldarriaga, Matias
Nearly all of the previous gravitational wave (GW) searches in the LIGO-Virgo data included GW waveforms with only the dominant quadrupole mode, i.e., omitting higher-order harmonics which are predicted by general relativity. Based on the techniques
Externí odkaz:
http://arxiv.org/abs/2312.06631
Autor:
Mehta, Ajit Kumar, Olsen, Seth, Wadekar, Digvijay, Roulet, Javier, Venumadhav, Tejaswi, Mushkin, Jonathan, Zackay, Barak, Zaldarriaga, Matias
We report the detection of 6 new candidate binary black hole (BBH) merger signals in the publicly released data from the second half of the third observing run (O3b) of advanced LIGO and advanced Virgo. The LIGO-Virgo-KAGRA (LVK) collaboration report
Externí odkaz:
http://arxiv.org/abs/2311.06061
Autor:
Wadekar, Digvijay, Venumadhav, Tejaswi, Mehta, Ajit Kumar, Roulet, Javier, Olsen, Seth, Mushkin, Jonathan, Zackay, Barak, Zaldarriaga, Matias
Publikováno v:
Phys. Rev. D 110, 084035 (2024)
Searches for gravitational wave events use models, or templates, for the signals of interest. The templates used in current searches in the LIGO-Virgo-Kagra (LVK) data model the dominant quadrupole mode $(\ell,|m|)=(2,2)$ of the signals, and omit sub
Externí odkaz:
http://arxiv.org/abs/2310.15233