The cusp-core problem in gas-poor dwarf spheroidal galaxies

Pierre Boldrini

RECORD

The cusp-core problem in gas-poor dwarf spheroidal galaxies

Pierre Boldrini

Astrophysics of Galaxies · Submitted 4 Jan 2022

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Given the wide variety of solutions, it becomes necessary to identify which mechanism dominates in the central region of galaxies by finding observational signatures left by them in order to highlight the true nature of dark matter.

how it is stated · asserted 0.93 read the record →

Comment (0) Read on arXiv ↗

Cite ▾

Claim paper

The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

Open the compiled record

Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 6,751 input tokens.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.18 · human participants 0.01 · controlled comparison 0.04 · randomized assignment 0.01 · states quantitative result 0.03 · compares with prior results 0.19 · mentions code or data availability 0.01.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; show every role.

This review deals with the inconsistency of inner dark matter density profiles in dwarf galaxies, known as the cusp-core problem. Particularly, we aim to focus on gas-poor dwarf galaxies. One of the most promising solutions to this cold dark matter small scale issue is the stellar feedback but it seems to be only designed for gas-rich dwarfs. However, in the regime of classical dwarfs, this core mechanism becomes negligible. Therefore, it is required to find solutions without invoking these baryonic processes as dark matter cores tend to persist even for these dwarfs, which are rather dark matter-dominated. Here we have presented two categories of solutions. One consists of creating dark matter cores from cusps within cold dark matter by altering the dark matter potential via perturbers. The second category gathers solutions which depict the natural emergence of dark matter cores in alternative theories. Given the wide variety of solutions, it becomes necessary to identify which mechanism dominates in the central region of galaxies by finding observational signatures left by them in order to highlight the true nature of dark matter.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	This review deals with the inconsistency of inner dark matter density profiles in dwarf galaxies, known as the cusp-core problem.	background 0.98	0.12	0.05	asserted 0.97
s1	Particularly, we aim to focus on gas-poor dwarf galaxies.	contribution 0.68	0.28	0.03	asserted 0.65
s2	One of the most promising solutions to this cold dark matter small scale issue is the stellar feedback but it seems to be only designed for gas-rich dwarfs.	background 0.87	0.05	0.04	hedged possibility 0.69
s3	However, in the regime of classical dwarfs, this core mechanism becomes negligible.	background 0.69	0.08	0.07	asserted 1.00
s4	Therefore, it is required to find solutions without invoking these baryonic processes as dark matter cores tend to persist even for these dwarfs, which are rather dark matter-dominated.	gap 0.69	0.09	0.21	asserted 0.99
s5	Here we have presented two categories of solutions.	contribution 1.00	0.75	0.05	asserted 0.99
s6	One consists of creating dark matter cores from cusps within cold dark matter by altering the dark matter potential via perturbers.	contribution 0.92	0.10	0.07	asserted 0.96
s7	The second category gathers solutions which depict the natural emergence of dark matter cores in alternative theories.	contribution 0.96	0.16	0.06	asserted 0.94
s8	Given the wide variety of solutions, it becomes necessary to identify which mechanism dominates in the central region of galaxies by finding observational signatures left by them in order to highlight the true nature of dark matter.	future work 0.87	0.05	0.24	asserted 0.93

What kind of paper the classifier reports this is: review 1.00 · evidence from literature 0.95.

What was examined, and what was not

sources read

arXiv listing abstract v1

not examined

full text
figures and tables
references and citing sentences
relations to other papers

levels run

P abstract

not run

S sections
T body sentences
C citations
R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

This review deals with the inconsistency of inner dark matter density profiles in dwarf galaxies, known as the cusp-core problem. Particularly, we aim to focus on gas-poor dwarf galaxies. One of the most promising solutions to this cold dark matter small scale issue is the stellar feedback but it seems to be only designed for gas-rich dwarfs. However, in the regime of classical dwarfs, this core mechanism becomes negligible. Therefore, it is required to find solutions without invoking these baryonic processes as dark matter cores tend to persist even for these dwarfs, which are rather dark matter-dominated. Here we have presented two categories of solutions. One consists of creating dark matter cores from cusps within cold dark matter by altering the dark matter potential via perturbers. The second category gathers solutions which depict the natural emergence of dark matter cores in alternative theories. Given the wide variety of solutions, it becomes necessary to identify which mechanism dominates in the central region of galaxies by finding observational signatures left by them in order to highlight the true nature of dark matter.

Human review

How Pith checks papers → · Full audit of this paper →

How the literature uses it

8 arXiv papers cite this in 9 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 6 sentences without a confident label

Uses its method or tool 1 paper

We adopt a functional form for the stellar density profile from Ref. [ref] , and utilize the gNFW DM profile for both a cuspy profile ($γ$ = 1 with $r_c$ = 800 pc) and a cored profile ($γ$ = 0.1 with $r_c$ = 150 pc) (see, e.g., Ref. [ref] for a discussion of the core-cusp problem).

White Dwarfs in Dwarf Spheroidal Galaxies: A New Class of Compact-Dark-Matter Detectors · Introduction · 0.87

Cites it as background 2 papers

This discrepancy is known as the cusp/core problem, and it is one of the well-known small-scale problems of the CDM paradigm (for comprehensive reviews see, e.g., [ref] ) which are still unsolved.

Dynamics of Dwarf Galaxies in Scalar-Tensor-Vector-Gravity · Introduction · 0.90
One can find a thorough description of the core-cusp problem both from the side of observations and numerical simulations and a comprehensive list of references in a review [ref] or in a recently published review [ref] .

Analytical analysis of the origin of core-cusp matter density distributions in galaxies · Introduction · 0.99

What it cites · 15 sentences without a confident label

Cites as support 1 paper

Cosmological simulations with low-density thresholds for star formation such as APOSTLE, Auriga and GEAR [ref] have been shown to not exhibit DM cores.

Pushing back the limits: detailed properties of dwarf galaxies in a LCDM universe · A promising solution for gas-rich dwarf galaxies · 0.98

Cites as background 1 paper

Even if weakly interacting massive elementary particles are the most popular DM candidates, DM could be made of macroscopic compact halo objects such as primordial black holes (PBHs) ( [ref] ).These black holes could naturally be produced in the early Universe via cosmic inflation, without the need to appeal to new physics beyond the standard model ( [ref] and for a recent review [ref] ) .

Primordial Black Holes as Dark Matter Candidates · Primordial black holes as dark matter candidates · 0.98

Discussion

Know something about this paper? Leave a comment, or highlight any passage above to comment on it.