Benjamin R Safdi
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Explore the profile of Benjamin R Safdi including associated specialties, affiliations and a list of published articles.
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28
Citations
29
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Recent Articles
1.
Manzari C, Park Y, Safdi B, Savoray I
Phys Rev Lett
. 2024 Dec;
133(21):211002.
PMID: 39642490
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...
2.
Dessert C, Ning O, Rodd N, Safdi B
Phys Rev Lett
. 2024 Jun;
132(21):211002.
PMID: 38856287
The Hitomi x-ray satellite mission carried unique high-resolution spectrometers that were set to revolutionize the search for sterile neutrino dark matter (DM) by looking for narrow x-ray lines arising from...
3.
Dessert C, Foster J, Park Y, Safdi B, Xu W
Phys Rev Lett
. 2023 Jun;
130(20):201001.
PMID: 37267565
Thermal Higgsino dark matter (DM), with mass around 1 TeV, is a well-motivated, minimal DM scenario that arises in supersymmetric extensions of the standard model. Higgsinos may naturally be the...
4.
Foster J, Witte S, Lawson M, Linden T, Gajjar V, Weniger C, et al.
Phys Rev Lett
. 2023 Jan;
129(25):251102.
PMID: 36608251
Axion dark matter (DM) may efficiently convert to photons in the magnetospheres of neutron stars (NSs), producing nearly monochromatic radio emission. This process is resonantly triggered when the plasma frequency...
5.
Buschmann M, Dessert C, Foster J, Long A, Safdi B
Phys Rev Lett
. 2022 Mar;
128(9):091102.
PMID: 35302791
The quantum chromodynamics (QCD) axion may modify the cooling rates of neutron stars (NSs). The axions are produced within the NS cores from nucleon bremsstrahlung and, when the nucleons are...
6.
Dessert C, Long A, Safdi B
Phys Rev Lett
. 2022 Mar;
128(7):071102.
PMID: 35244430
Axions with couplings g_{aγγ}∼few×10^{-11} GeV^{-1} to electromagnetism may resolve a number of astrophysical anomalies, such as unexpected ∼TeV transparency, anomalous stellar cooling, and x-ray excesses from nearby neutron stars. We...
7.
Buschmann M, Foster J, Hook A, Peterson A, Willcox D, Zhang W, et al.
Nat Commun
. 2022 Feb;
13(1):1049.
PMID: 35217674
Axions are hypothetical particles that may explain the observed dark matter density and the non-observation of a neutron electric dipole moment. An increasing number of axion laboratory searches are underway...
8.
Buschmann M, Safdi B, Schutz K
Phys Rev Lett
. 2021 Dec;
127(24):241104.
PMID: 34951772
We present an approach to measure the Milky Way (MW) potential using the angular accelerations of stars in aggregate as measured by astrometric surveys like Gaia. Accelerations directly probe the...
9.
Salemi C, Foster J, Ouellet J, Gavin A, Pappas K, Cheng S, et al.
Phys Rev Lett
. 2021 Sep;
127(8):081801.
PMID: 34477408
Two of the most pressing questions in physics are the microscopic nature of the dark matter that comprises 84% of the mass in the Universe and the absence of a...
10.
Foster J, Kongsore M, Dessert C, Park Y, Rodd N, Cranmer K, et al.
Phys Rev Lett
. 2021 Aug;
127(5):051101.
PMID: 34397235
Sterile neutrinos with masses in the keV range are well-motivated extensions to the Standard Model that could explain the observed neutrino masses while also making up the dark matter (DM)...