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Showing results for M. safdi
Your search for M. Saiidi retrieved no results
Upper Limit on the QCD Axion Mass from Isolated Neutron Star Cooling.
Buschmann M, Dessert C, Foster JW, Long AJ, Safdi BR. Buschmann M, et al. Phys Rev Lett. 2022 Mar 4;128(9):091102. doi: 10.1103/PhysRevLett.128.091102. Phys Rev Lett. 2022. PMID: 35302791 Free article.
We find no evidence for axions in the isolated NS data, and within the context of the Kim-Shifman-Vainshtein-Zakharov QCD axion model, we constrain m_{a} 16 meV at 95% confidence level. An improved understanding of NS cooling and nucleon superfluidity could further improv …
We find no evidence for axions in the isolated NS data, and within the context of the Kim-Shifman-Vainshtein-Zakharov QCD axion model, we co …
Early-Universe Simulations of the Cosmological Axion.
Buschmann M, Foster JW, Safdi BR. Buschmann M, et al. Phys Rev Lett. 2020 Apr 24;124(16):161103. doi: 10.1103/PhysRevLett.124.161103. Phys Rev Lett. 2020. PMID: 32383908
Ultracompact dark matter (DM) minihalos at masses at and below 10^{-12} M_{ } arise in axion DM models where the Peccei-Quinn (PQ) symmetry is broken after inflation. ...We also measure the DM density at different simulated masses and argue that the correct DM density is …
Ultracompact dark matter (DM) minihalos at masses at and below 10^{-12} M_{ } arise in axion DM models where the Peccei-Quinn (PQ) s …
Stellar Wakes from Dark Matter Subhalos.
Buschmann M, Kopp J, Safdi BR, Wu CL. Buschmann M, et al. Phys Rev Lett. 2018 May 25;120(21):211101. doi: 10.1103/PhysRevLett.120.211101. Phys Rev Lett. 2018. PMID: 29883177 Free article.
By probing characteristic wakes that a passing dark matter subhalo leaves in the phase-space distribution of ambient halo stars, we estimate sensitivities down to subhalo masses of 10^{7} M_{ } or below. The detection of such subhalos would have implications for dark mat …
By probing characteristic wakes that a passing dark matter subhalo leaves in the phase-space distribution of ambient halo stars, we estimate …
First Results from ABRACADABRA-10 cm: A Search for Sub-μeV Axion Dark Matter.
Ouellet JL, Salemi CP, Foster JW, Henning R, Bogorad Z, Conrad JM, Formaggio JA, Kahn Y, Minervini J, Radovinsky A, Rodd NL, Safdi BR, Thaler J, Winklehner D, Winslow L. Ouellet JL, et al. Phys Rev Lett. 2019 Mar 29;122(12):121802. doi: 10.1103/PhysRevLett.122.121802. Phys Rev Lett. 2019. PMID: 30978106
To date, the available parameter space for axion and axionlike particle dark matter is relatively unexplored, particularly at masses m_{a} 1 mueV. ABRACADABRA is a new experimental program to search for axion dark matter over a broad range of masses, 10^{-12} m_{a} …
To date, the available parameter space for axion and axionlike particle dark matter is relatively unexplored, particularly at masses m …
X-Ray Searches for Axions from Super Star Clusters.
Dessert C, Foster JW, Safdi BR. Dessert C, et al. Phys Rev Lett. 2020 Dec 31;125(26):261102. doi: 10.1103/PhysRevLett.125.261102. Phys Rev Lett. 2020. PMID: 33449711 Free article.
We find no significant evidence for axions and constrain the axion-photon coupling g_{agammagamma} 3.6 10^{-12} GeV^{-1} for masses m_{a} 5 10^{-11} eV at 95% confidence....
We find no significant evidence for axions and constrain the axion-photon coupling g_{agammagamma} 3.6 10^{-12} GeV^{-1} for masses m …
Supernova Axions Convert to Gamma Rays in Magnetic Fields of Progenitor Stars.
Manzari CA, Park Y, Safdi BR, Savoray I. Manzari CA, et al. Phys Rev Lett. 2024 Nov 22;133(21):211002. doi: 10.1103/PhysRevLett.133.211002. Phys Rev Lett. 2024. PMID: 39642490 Free article.
It has long been established that axions could have been produced within the nascent proto-neutron star formed following the type II supernova SN1987A, escaped the star due to their weak interactions, and then converted to gamma rays in the Galactic magnetic fields; the nonobserv …
It has long been established that axions could have been produced within the nascent proto-neutron star formed following the type II superno …
No Evidence for Axions from Chandra Observation of the Magnetic White Dwarf RE J0317-853.
Dessert C, Long AJ, Safdi BR. Dessert C, et al. Phys Rev Lett. 2022 Feb 18;128(7):071102. doi: 10.1103/PhysRevLett.128.071102. Phys Rev Lett. 2022. PMID: 35244430 Free article.
The nonobservation of x rays constrains the axion-photon coupling to g_{agammagamma} 5.5 10^{-13}sqrt[C_{agammagamma}/C_{aee}] GeV^{-1} at 95% confidence for axion masses m_{a} 5 10^{-6} eV, with C_{aee} and C_{agammagamma} the dimensionless coupling constants to electro …
The nonobservation of x rays constrains the axion-photon coupling to g_{agammagamma} 5.5 10^{-13}sqrt[C_{agammagamma}/C_{aee}] GeV^{-1} at …
Associations of Fenofibrate Therapy With Incidence and Progression of CKD in Patients With Type 2 Diabetes.
Frazier R, Mehta R, Cai X, Lee J, Napoli S, Craven T, Tuazon J, Safdi A, Scialla J, Susztak K, Isakova T. Frazier R, et al. Kidney Int Rep. 2018 Sep 18;4(1):94-102. doi: 10.1016/j.ekir.2018.09.006. eCollection 2019 Jan. Kidney Int Rep. 2018. PMID: 30596172 Free PMC article.

During a median follow-up of 4 years, treatment with fenofibrate was associated with lower rate of eGFR decline (-0.28 ml/min per 1.73 m(2) per year in the fenofibrate group vs. -1.25 ml/min per 1.73 m(2) per year in the placebo group, P < 0.01) and with lower in

…
During a median follow-up of 4 years, treatment with fenofibrate was associated with lower rate of eGFR decline (-0.28 ml/min per 1.73 m …
Axion Mass Prediction from Adaptive Mesh Refinement Cosmological Lattice Simulations.
Benabou JN, Buschmann M, Foster JW, Safdi BR. Benabou JN, et al. Phys Rev Lett. 2025 Jun 20;134(24):241003. doi: 10.1103/6v21-d6sj. Phys Rev Lett. 2025. PMID: 40742968 Free article.
Accounting for axion production from strings prior to the QCD phase transition leads us to predict that the axion mass should be approximately m_{a} (45,65) mueV. However, we provide preliminary evidence that axions are produced in greater quantities from the string-domai …
Accounting for axion production from strings prior to the QCD phase transition leads us to predict that the axion mass should be approximate …
Green Bank and Effelsberg Radio Telescope Searches for Axion Dark Matter Conversion in Neutron Star Magnetospheres.
Foster JW, Kahn Y, Macias O, Sun Z, Eatough RP, Kondratiev VI, Peters WM, Weniger C, Safdi BR. Foster JW, et al. Phys Rev Lett. 2020 Oct 23;125(17):171301. doi: 10.1103/PhysRevLett.125.171301. Phys Rev Lett. 2020. PMID: 33156637
Byrd Green Bank Telescope in the L band and the Effelsberg 100-m Telescope in the L band and S band from a number of sources expected to produce bright signals of axion-photon conversion, including the Galactic center of the Milky Way and the nearby isolated neutron stars …
Byrd Green Bank Telescope in the L band and the Effelsberg 100-m Telescope in the L band and S band from a number of sources expected …
14 results