Stellar and dark matter density in the Local Universe

Караченцев, И. Д.; Telikova, K. N.

doi:10.1002/asna.201813520

Cited by 29 publications

(33 citation statements)

References 49 publications

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“…If a radio transient tracks stellar mass, then the rate of that transient for a given galaxy is given by Equation 1, where M galaxy is the stellar mass of the galaxy and Φ M is the volumetric rate of stellar mass. We take Φ M to be 7.4 × 10 8 M Mpc −3 (Karachentsev & Telikova 2018). Thus, if a radio transient happens once every year in the Milky Way and is detected by STARE2, then its volumetric rate is of order 10 7 Gpc −3 yr −1 above an energy of 2 × 10 28 erg s −1 Hz −1 ,…”

Section: Undiscovered Fast Radio Transientsmentioning

confidence: 99%

STARE2: Detecting Fast Radio Bursts in the Milky Way

Bochenek

McKenna

Belov

et al. 2020

PASP

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There are several unexplored regions of the short-duration radio transient phase space. One such unexplored region is the luminosity gap between giant pulses (from pulsars) and cosmologically located fast radio bursts (FRBs). The Survey for Transient Astronomical Radio Emission 2 (STARE2) is a search for such transients out to 7 Mpc. STARE2 has a field of view of 3.6 steradians and is sensitive to 1 millisecond transients above ∼ 300 kJy. With a two-station system we have detected and localized a solar burst, demonstrating that the pilot system is capable of detecting short duration radio transients. We found no convincing transients with duration between 65 µs and 34 ms in 200 days of observing, limiting with 95% confidence the all-sky rate of transients above ∼ 300 kJy to < 40 sky −1 year −1 . If the luminosity function of FRBs could be extrapolated down to 300 kJy for a distance of 10 kpc, then one would expect the rate to be ∼ 2 sky −1 year −1 . arXiv:2001.05077v1 [astro-ph.HE]

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Section: Undiscovered Fast Radio Transientsmentioning

confidence: 99%

STARE2: Detecting Fast Radio Bursts in the Milky Way

Bochenek

McKenna

Belov

et al. 2020

PASP

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“…Such an extent of the LV allows tracing the effect of the fall of galaxies onto the cluster and determine the radius R 0 with high accuracy. Figure 13 shows the pattern of the Hubble flow of galaxies relative to the center of Karachentsev and Telikova [81] used the most complete available data about the distances and halo masses of nearby galaxies to reconstruct the distribution of visible and dark matter in the LV. Figure 14a shows the integrated stellar-mass profile in the units of critical density.…”

Section: Dwarf Galaxies and Local Distribution Of Dark Mattermentioning

confidence: 99%

Dwarf Galaxies in the Local Volume

Караченцев

Kaisina

2019

Astrophys. Bull.

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We review observational data about a sample of Local Volume objects containing about 1000 galaxies within 11 Mpc of the Milky Way. Dwarf galaxies with stellar masses M * /M ⊙ < 9 dex make up 5/6 of the sample. Almost 40% of them have their distances measured with high precision using the Hubble Space Telescope. Currently, the LV is the most representative and least selection-affected sample of dwarf galaxies suitable for testing the standard ΛCDM paradigm at the shortest cosmological scales. We discuss the H II properties of dwarf galaxies in different environments and the star formation rates in these systems as determined from F U V-and Hα-survey data. We also pay certain attention to the baryonic Tully-Fisher relation for low-mass dwarf galaxies. We also point out that LV dwarfs are important "tracers" for determining the total masses of nearby groups and the nearest Virgo cluster.

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“…These events track the stellar mass of a galaxy, while CCSNe track the star formation of a galaxy. The fraction of local-universe stellar mass contained in the Milky Way is approximately equal to the fraction of local-universe star formation occurring in the Milky Way (Salim et al 2007;Karachentsev & Telikova 2018;Bochenek et al 2020a). Therefore, if AIC or NS-NS mergers were as efficient at making magnetars as CCSNe, we would expect approximately half the magnetars in the Milky Way to be consistent with originating from AIC or NS-NS mergers.…”

Section: Introductionmentioning

confidence: 99%

Localized Fast Radio Bursts Are Consistent with Magnetar Progenitors Formed in Core-collapse Supernovae

Bochenek

Ravi

Dong

2021

ApJL

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With the localization of fast radio bursts (FRBs) to galaxies similar to the Milky Way and the detection of a bright radio burst from SGR J1935+2154 with energy comparable to extragalactic radio bursts, a magnetar origin for FRBs is evident. By studying the environments of FRBs, evidence for magnetar formation mechanisms not observed in the Milky Way may become apparent. In this Letter, we use a sample of FRB host galaxies and a complete sample of core-collapse supernova (CCSN) hosts to determine whether FRB progenitors are consistent with a population of magnetars born in CCSNe. We also compare the FRB hosts to the hosts of hydrogen-poor superluminous supernovae (SLSNe-I) and long gamma-ray bursts (LGRBs) to determine whether the population of FRB hosts is compatible with a population of transients that may be connected to millisecond magnetars. After using a novel approach to scale the stellar masses and star formation rates of each host galaxy to be statistically representative of z = 0 galaxies, we find that the CCSN hosts and FRBs are consistent with arising from the same distribution. Furthermore, the FRB host distribution is inconsistent with the distribution of SLSNe-I and LGRB hosts. With the current sample of FRB host galaxies, our analysis shows that FRBs are consistent with a population of magnetars born through the collapse of giant, highly magnetic stars.

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Stellar and dark matter density in the Local Universe

Cited by 29 publications

References 49 publications

STARE2: Detecting Fast Radio Bursts in the Milky Way

STARE2: Detecting Fast Radio Bursts in the Milky Way

Dwarf Galaxies in the Local Volume

Localized Fast Radio Bursts Are Consistent with Magnetar Progenitors Formed in Core-collapse Supernovae

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