2023ApJ...945...25A

Query : 2023ApJ...945...25A

2023ApJ...945...25A - Astrophys. J., 945, 25 (2023/March-1)

Searching for TeV Dark Matter in Irregular Dwarf Galaxies with HAWC Observatory.

ALFARO R., ALVAREZ C., ARTEAGA-VELAZQUEZ J.C., AVILA ROJAS D., AYALA SOLARES H.A., BABU R., BELMONT-MORENO E., CABALLERO-MORA K.S., CAPISTRAN T., CARRAMINANA A., CASANOVA S., CHAPARRO-AMARO O., COTTI U., COTZOMI J., DE LA FUENTE E., DIAZ HERNANDEZ R., DINGUS B.L., DUVERNOIS M.A., DUROCHER M., DIAZ-VELEZ J.C., ESPINOZA C., FAN K.L., FRAIJA N., GARCIA-GONZALEZ J.A., GARFIAS F., GONZALEZ M.M., HARDING J.P., HERNANDEZ-CADENA S., HUANG D., HUEYOTL-ZAHUANTITLA F., IRIARTE A., JOSHI V., KAUFMANN S., KIEDA D., LEE J., LEON VARGAS H., LINNEMANN J.T., LONGINOTTI A.L., LUIS-RAYA G., MALONE K., MARTINEZ O., MARTINEZ-CASTRO J., MATTHEWS J.A., MORENO E., MOSTAFA M., NAYERHODA A., NELLEN L., OMODEI N., PEREZ ARAUJO Y., PEREZ-PEREZ E.G., RHO C.D., ROSA-GONZALEZ D., SALAZAR H., SALAZAR-GALLEGOS D., SANDOVAL A., SERNA-FRANCO J., SON Y., SPRINGER R.W., TIBOLLA O., TOLLEFSON K., TORRES I., TORRES-ESCOBEDO R., TURNER R., URENA-MENA F., VILLASENOR L., WANG X., WILLOX E., ZHOU H., DE LEON C. (The HAWC Collaboration), GAMMALDI V., KARUKES E. and SALUCCI P.

Abstract (from CDS):

We present the results of dark matter (DM) searches in a sample of 31 dwarf irregular (dIrr) galaxies within the field of view of the HAWC Observatory. dIrr galaxies are DM-dominated objects in which astrophysical gamma-ray emission is estimated to be negligible with respect to the secondary gamma-ray flux expected by annihilation or decay of weakly interacting massive particles (WIMPs). While we do not see any statistically significant DM signal in dIrr galaxies, we present the exclusion limits (95% C.L.) for annihilation cross section and decay lifetime for WIMP candidates with masses between 1 and 100 TeV. Exclusion limits from dIrr galaxies are relevant and complementary to benchmark dwarf Spheroidal (dSph) galaxies. In fact, dIrr galaxies are targets kinematically different from benchmark dSph, preserving the footprints of different evolution histories. We compare the limits from dIrr galaxies to those from ultrafaint and classical dSph galaxies previously observed with HAWC. We find that the constraints are comparable to the limits from classical dSph galaxies and ∼2 orders of magnitude weaker than the ultrafaint dSph limits.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Dark matter - Cold dark matter - Galaxies - Dwarf irregular galaxies - Particle astrophysics - Gamma-rays

Simbad objects: 41

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Number of rows : 41
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
3 NAME Andromeda IV G 00 42 32.3 +40 34 19           ~ 80 0
4 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
5 Z 503-26 LSB 01 49 31.71 +32 35 16.2   13.0       ~ 171 0
6 NGC 784 LSB 02 01 16.932 +28 50 14.13 12.97 12.50 12.07 11.83   ~ 212 0
7 NAME Tri II G 02 13 17.40 +36 10 42.4           ~ 164 0
8 NGC 1156 GiG 02 59 42.8528847264 +25 14 28.352017320 12.13 12.32 11.74     ~ 323 1
9 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
10 Z 206-10 AG? 07 28 17.724 +40 46 11.36   15.50       ~ 155 0
11 MCG+07-18-004 LSB 08 28 28.560 +41 51 27.13   18       ~ 175 0
12 Z 152-72 EmG 09 50 22.769 +31 29 17.80   14.48   14.10   ~ 207 0
13 Z 153-14 AG? 10 04 40.949 +29 21 51.54   15.2       ~ 75 0
14 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
15 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
16 MCG+11-13-039 GiG 10 49 36.412 +65 32 01.07 15.55 15.27 14.79 14.55   ~ 170 0
17 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
18 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 237 0
19 Z 157-55 AG? 11 55 39.7060218792 +31 31 06.535928784   15.7       ~ 138 0
20 NGC 4068 AG? 12 04 03.265 +52 35 26.05   13.29   12.77   ~ 189 0
21 NGC 4190 LSB 12 13 44.765 +36 38 02.49 13.88 13.40 13.25 12.86   ~ 224 0
22 Z 244-18 bCG 12 26 15.69 +48 29 38.3   15.3       ~ 364 0
23 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
24 Z 187-44 GiP 12 27 05.566 +37 08 30.39   14.19   13.55   ~ 217 0
25 Z 216-4 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 270 0
26 NGC 4455 EmG 12 28 44.1242000448 +22 49 13.538159508   15.5       ~ 222 0
27 Z 159-13 GiC 12 32 54.5 +31 32 30   13.50   13.03   ~ 180 0
28 NGC 4625 SyG 12 41 52.7121819576 +41 16 26.115765780 12.74 12.92 12.35     ~ 383 2
29 IC 3687 GiG 12 42 15.1540831512 +38 30 05.844632940   15.5       ~ 153 0
30 MCG+06-28-024 GiC 12 44 24.881 +34 23 03.33   15.0       ~ 72 0
31 Z 270-22 bCG 12 46 56.426 +51 36 46.80   14.1       ~ 119 0
32 NGC 4789A GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 614 1
33 Z 245-36 AG? 13 14 27.997 +45 55 11.14 13.63 13.26 13.02 12.81   ~ 297 0
34 Z 271-48 EmG 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 218 0
35 Z 272-13 AG? 13 54 45.602 +53 54 20.06   14.2       ~ 219 0
36 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
37 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
38 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
39 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
40 UGC 11583 LSB 20 30 15.30 +60 26 25.0   17       ~ 66 0
41 NAME Local Group GrG ~ ~           ~ 9325 0

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